http://www.pdworld.com/document/PDi%204-2009 by S.C.O.P. AB

News from Norton-Nimbus p. 35 & 55 Volume 9 • No. 4 Oct 09 - Nov 09

Special Feature:

This is Hydrodemolition pages: 36-42

Special Feature:

Hydraulic Market “Break” Down

page: 26-32 Shows:

SAIE Down but Still Standing

pages: 43-47 Reports:

“Power Drive” Instead of Recession pages: 24-25

Concrete Cutting:

Grand Scale Wire Sawing in Vienna

Special Feature:

Concrete Floor Grinding & Polishing

pages: 12-25

page: 52

Concrete Cutting:

D-Drill Bites into Concrete Biscuit at Chocolate Factory page: 54

New Powerful Drilling Solution from Husqvarna Construction Products page: 48

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102

CONTENTS PDi • issue no. 4 Oct - Nov • Volume 9

REGULARS

Professional Demolition International Magazine Address: P.O. Box 786, SE-191 27 Sollentuna, SWEDEN Visitors address: Skillingevagen 14A., SE-192 71 Sollentuna, SWEDEN

Very little can make a big change “Has health and safety training gone too far?”

Training around the world

Business

Phone:

+46 8 631 90 70

Telefax:

+46 8 585 700 47

E-mail:

info@pdworld.com

Website:

www.pdworld.com

ISSN Registration:

ISSN 1650-979X

Editor-in-Chief Jan Hermansson, Jan.Hermansson@pdworld.com Assisting Editor Anita do Rocio Hermansson, Anita.Hermansson@pdworld.com Editorial staff Editor Global: Mikael Karlsson, mikael.karlsson@pdworld.com Editor Demolition: Mark Anthony, mark.anthony@pdworld.com Editor Recycling: Heikki Harri, heikki.harri@pp1.inet.fi Editor North & South America Jim Parsons, jim.parsons@pdworld.com Editor Asia Pacific Silvana Wirepa, silvana@pdworld.com Editor Russia Andrei Bushmarin, andrei.bushmarin@pdworld.com Editor Africa Kevin Mayhew, kevinm@addixion.co.za Publisher Jan Hermansson

International Sales Offices

Sweden, Norway & Denmark Contact the Editorial Office Phone: +46 (0)8 631 90 70, Fax: +46 (0)8 585 700 47 E-mail: info@pdworld.com Germany/Austria/Switzerland/ Liechtenstein/Finland Gunter Schneider GSM International Postfach 20 21 06 - D-41552 Kaarst Alma-Mahler-Werfel-Str. 15 - D- 41564 Kaarst, Germany Phone: +49 2131 / 51 18 01 E-mail: gsm-international@web.de UK/Ireland/France/Belgium/ the Netherlands/Spain/Portugal M. Stéphane de Rémusat, REM - Europe Media Service Chemin de la Bourdette, F-31380 Gragnague, France Phone: +33 (0)5 34 27 01 30, Fax: +33 (0)5 34 27 01 31, +33 (0)5 34 27 01 34, Mobile: +33 (0)6 80 84 43 78 E-mail : sremusat@aol.com Italy Monica Colleoni & Romano Ferrario, Ediconsult Internazionale S.r.l. Via Savona 97, 20144 Milano, Italy Phone: + 39 02 4771 0036, Fax: + 39 02 4771 1360 E-mail: milano@ediconsult.com USA & Canada Dunay Associates 16 Garden Place, Westwood, NJ 07675, USA Phone: +1 201 873 0891, Fax: +1 201 664 1829 E-Mail: darren.dunay@pdworld.com Australia/New Zealand/Asia Pacific/Korea/Japan Contact PDi editorial office in Sweden. Rest of the world Contact the PDi head office. The magazine PDI, Professional Demolition International is published four times per year with a worldwide circulation of 13000 copies. The annual airmail subscription rate is US$ 45. All subscription correspondance should be directed to: The subscription department, SCOP AB, P.O. Box 786, SE-191 27 Sollentuna, Sweden. PDI is mailed by second class postage paid at Stockholm, Sweden. © Copyright SCOP AB 2000-2009

PDi • Issue 4 - 2009 • Oct - Nov

Editorial

First international dealer meeting for Mantovannibenne Iona sets sights on global recycling market

Recycling & Waste Management Saudi Arabia 2009 Aquajet Open day proves international success New dust extractor from Scanmaskin

“Power Drive” instead of recession

Report

“It ran great!” Indian mine buys Tabe breakers

Record time demolition of famous Mumbai flyover by Atlas Copco CombiCutters

Brokk brings down hospital in Oslo

Demolition

Atlas Copco involved in German City Tunnel Intelligent demolition job using an Atlas Copco HB 7000 and AutoControl

Around-the-clock dust control in Brooklyn, New York

Downwell Demolition brings flyover down to earth

Down and recycled in one month

SAIE down but still standing

Grand scale wire sawing in Vienna

Shows Concrete Cutting Morgan Est appoints D-Drill for live sub-station cable removal D-Drill bites into concrete biscuit at chocolate factory Wire sawing on O2 Dome

Associations “Institute Goes International”

The boys are back in town

US Demolition Association announces details on 2010 annual convention US National Demolition Assocation elects Raymond Passeno, CIH, of Bierlien Companies as President Dates for 16th German Demolition Conference set And the Demolition Awards winners are.......

NEWS

Site Report World’s biggest for primary crushing New Promove breaker in operation in Italy Promove in severe conditions

35 48 50

O’Tiping from Norton-Nimbus A new powerful drilling solution New hydraulic clamp

Range for Bobcat mini excavators

JCB launches smallest compact Loadall

Oscillation breakthrough quadruples dust suppression area

New floor saw blades from Norton-Nimbus

Special Feature 12 21 22 26 36 40

41 42

Floor Preparation and polishing 2009 “The proofs in the polish” Beyond the surface Market “break” down This is hydrodemolition Demanding Hydrodemolition project at Stockholm, Arlanda Hydrodemolition helps Costa Rican bridges make the grade Conjet assists in Channel Tunnel repairs Swedish dam relies on hydrodemolition techniques during refurbishment

“Very little can make a big change” Dear Readers In this issue we are publishing information about concrete floor preparation and polishing, an industry that has grown rapidly and attracted many new players. While writing and editing these articles I realized that most of the people I have interviewed have said that the most important markets are Europe, United States, Australia and New Zealand and parts of Asia. Very few have said that Africa is a potential growth market for concrete floor grinding and polishing. Perhaps that is because many of the African states, as well as countries in South America and Asia do not have any need for concrete floor grinding equipment and even less for polishing equipment at present. This is probably due to having far more important issues to deal with. It is not only that they do not have a concrete floor to grind or polish, in many cases they do not even have what we would call a floor or even a house or any shelter. Solving the problems of starvation and stopping, preventing and treating serious diseases and fighting for human rights are just a few examples of far more imminent and important tasks to deal with. Normally at Christmas time many may send an extra thought or even make a contribution to people around us that are not as fortunate as ourselves. But in these difficult times with a global recession and swine flue keeping us occupied, it seems like the industrialized world has enough of its own problems. Even the media is silent about misconceptions in the so-called third world. It seems like we are ignoring that over one billion of the world’s approximate 6.4 billion population are actually starving. Around 1.4 billion are considered poor and having about one euro or US$ 1.25 to live on each day. But just one euro or a little bit more then a dollar from each of us can be the difference for a child in Africa to have enough to eat. There are several global organisations to contact to set up a monthly sponsorship and support a needing child. Probably many of you consider that maybe you could do more. And if many of us do just a little, like giving a dollar or a euro a day it would make a very big difference. I am sure we could cut down on something that we do not need and pass that euro to someone who needs it more. Maybe some of you are thinking what has an editorial like this to do with concrete cutting, demolition and recycling. Even though in our professional role we have responsibilities and as owners of manufacturing and contracting companies we can maybe do even more than individuals. With our money and support it maybe be possible to educate others to start up small businesses that can manufacture something or offer services of some kind, maybe even concrete floor grinding and polishing. This issue of PDi is the last before Christmas and contains an extensive report on concrete floor grinding and polishing, where several key people in this industry have been kind enough to share their thoughts. There are also special features on hydrodemolition equipment and hydraulic breakers as well as a number of reports on other types of equipment. The next issue will be published at the turn of the year and wish you all a Merry Christmas where ever you are in the world.

Jan Hermansson Editor-in-Chief jan.hermansson@pdworld.com

PDi • Issue 4 - 2009 • Oct - Nov

Words from the President

“Has Health and Safety Training gone to far?” After the recent Drilling and Sawing, IACDS World competition and the presentation taking place in Las Vegas in February 2009 I was amazed at the quality and the diversitility of the contracts that took place, by all the entrants of the competition. As I was one of the judges from England along side Jerry Hare of Jerry Hare Diamond Drilling, we both read and discussed all the jobs very closely and in detail. With the complex jobs undertaken there was shown an immense skill and attribute demonstrated by the operators. Over the years, world wide we have trained our operators to a highly skilled level. In my opinion we are one of the most skilful trades in the construction industry. Bricklayers lay brick, plasterer plaster walls, floor layers lay floors and other trades follow their skills set. What I am trying to say is that our skilled operators are expected to wire saw, wall saw, floor sawing, hand saw, chain saw, diamond drill into concrete, stone, brick and many other materials. Some of our operators will have skills to operate Remote Controlled Demolition machines. The machinery to carry out these operations cost a considerable amount of money and need trained operators to perform the job required and to prevent damage or Health and Safety situations occurring. We are now also offering our customers floor preparation and polishing of concrete and companies are now training their operators to use this equipment. Another operation and burdening on the operators is collection of concrete slurry and disposal of it in a green and environmentally manner, which is being demanded, by our clients and governments. In the early days our work was classed as unskilled labourer jobs and thanks to all the associations and manufacturers around the world, upgrading the training levels for our operators, our work has been recognised as one of the premiere leading trades on site. Again thanking the associations and the manufacturers for a vast increase in interest in health and safety to our operatives and to the use of our equipment and machinery. All the associations around the world have training and safety courses and take these very seriously in deed. This has resulted in fewer accidents happening on site whilst using diamond drilling and sawing equipment. In Britain major accident have only occurred when construction companies have hired in the equipment with no trained operators and have used their own unskilled operator. The association has tried very hard to

stop companies using this equipment without a qualified operator and stopping the plant hire companies hiring the equipment to operators without sufficient training. I do not know if this has happened in other countries and I would be interested to know myself and if this is happening please could you let the IACDS know. On the other hand my personal opinion is that Health and Safety in Britain has gone too far. It seems to be stopping simple things in life, that we take for granted, that one could do. It is a wonder that we do not have to produce a risk assessment and a method statement and hours of training and records to just get out of bed in the morning. It is a wonder that some government department has not thought of this, perhaps this does occur in other countries. Seriously I am a supporter of Health and Safety training and the skills training of the operators so that when jobs come along of a complicated manner that you can feel confident that you are able to send them on to jobs to carry them out safely because of the high standards of training that they have received. With D-Drill and the association one operation, which we are trying to take on board, is the GPR (radar) of concrete. We found that we do need a very highly trained operator who is somewhat used to reading images on computers to a fine degree, when most operators are more hands on and find it difficult to work with computers everyday. Although, not to degrade the operators some companies have been able to find operators within their organisation that can, with training, interpret the information correctly. The IACDS will be holding seminars during Bauma on Friday 23 April, 2010 by three main manufacturers on different subjects such as wire sawing, drilling, demolition and other subjects. Best wishes for the coming year and KEEP TRAINING!!

Best regards Peter White President IACDS

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Words from O’Brien

Training Around the special survey World

First international dealer meeting for Mantovannibenne

Recently CSDA held its Operator Certification and Estimating classes in Florida. Over 1,500 students have graduated from nine different classroom and handson courses since they began in 1992. What is different with these classes is the students. The majority of students have come from North America, but more and more students from around the globe are now attending. This session attracted two students from India, two from Trinidad and Tobago and one from Canada. CSDA training programmes have evolved over time and have been supplemented in recent years by online training. Online training is becoming increasingly popular, and will certainly meet the needs of many students, but the hands-on and classroom courses will always be a preferred method of training. Training members from foreign countries is a plus for CSDA, since not every country is of sufficient size to be able to organize an association and provide training. With over 20 percent of its membership based outside the United States, CSDA is a natural to provide such training. Members who come from outside North America come to the United States to develop ongoing relationships, in addition to learning from CSDA instructors. The international sawing and drilling community is small in comparison with the construction industry, and it is natural for a close-knit group of people with a passion for what they do to rely on each other to learn, grow and advance the level of professionalism in their industry.

CSDA is also trying to expand its reach by holding training sessions outside of Florida to better serve members, both domestic and international. Next February, CSDA will conduct its first training session at the World of Concrete in Las Vegas. The Wall Sawing 101 class will be held 2-4 February, 2010, with classroom sessions and hands-on training held at the outdoor booths of several manufacturer members. Wall Sawing 101 is geared towards both newly-hired operators and those wanting to expand their knowledge of wall, hand, ring or chain sawing basics. The course covers a basic introduction of types of saws; blade and diamond chain selection; how diamonds work; setup, operation, troubleshooting and preventive maintenance.

The Pulverizer MCP is the ideal tool to recycle and pulverise concrete blocks into small fragments for easy loading and transportation off site. The Rotating Pulverizer RP is used for primary and secondary demolition and ideal for recycling and its 360° hydraulic rotation allows perfect positioning even in high reach demolition applications. The dealer representatives also visited some historical places in the province of Modena and the meeting was so successful Mantovanibenne is making plans for the next one.

www.mantovanibenne.com

Iona sets sights on global recycling market

CSDA is also holding discussions with international members, with the aim of developing customized training programmes in the United States for larger groups of foreign operators. It is hoped that training classes offered to international members can be held at the same time and location as classes for North American members to promote international cooperation and the sharing of information. Training has always been important for the advancement of any industry. The maturity of the international sawing and drilling community is most encouraging, and preparing to meet the training needs of an ever-growing number of operators is a challenge that CSDA is ready to accept. Best regards Patrick O’Brien Executive Director CSDA, US Concrete Sawing & Drilling Association

From 9 to 13 September 2009, the Italian manufacturer Mantovanibenne held its first worldwide dealer meeting. The dealers spent time in the factory and discussed with MBI staff the difficult year for the sector and strategies and possible solutions for 2010. The dealers visited a job site in Bondeno to look at three Mantovanibenne attachments a Scrap Shear SH700 eagle version, a Fix Pulverizer MCP900 and a Rotating Pulverizer RP18, working on a sugar refinery. The Scrap Shear SH is the most productive tool for all metal processing requirements for demolition as its high cutting forces make light work of steel sections.

PDi • Issue 4 - 2009 • Oct - Nov

In Northern Ireland a new company Iona Waste Systems Ltd has been formed specialising in the design and manufacture of a diverse range of products, aimed at the waste recycling sector. Iona Lights Separation Unit is one of the products in the range, which when married with other IONA equipment will enable customers to potentially recycle up to 95% of their construction, demolition or industrial waste material. The processed materials can then be used as high grade recycled products, such as aggregates, steel and refuge derived fuel. The Iona range of Trommels are claimed

to be unique in that they have been specifically designed for the recycling market. Iona also supplies the range of associated auxiliary systems to maximise throughput and end product and all plants can be tailored to suit customer requirements and budgets. As well as targeting UK and Irish Markets, Iona aims to pursue the huge export market potential where legislation dictates the importance of recycling waste to reduce landfill taxes. Iona, based in Killyman, County Tyrone, has already had interest from potential dealers in USA, France, Germany and Australia.

www.ionawaste.com

www.trevibenne.it

A strong character that can satisfy all of your needs. TREVI BENNE spa - 36025 Noventa Vicentina - VI - Italy - Via A. Volta, 5 T 0444 760773 - F 0444 861182 - info@trevibenne.it

Recycling & Waste Management Saudi Arabia 2009 1-4 November this year the largest specialized trade event organized in Saudi Arabia for the recycling and waste management sector took place. The Recycling & Waste Management Saudi Arabia 2009 took place at the brand new Riyadh International Exhibition Centre under the Auspices of Ministry of Municipal and Rural Affairs, Kingdom of Saudi Arabia. The event, the second in the series started in 2007, is tailored to address the critical problems of accumulated waste facing almost all regions across the Kingdom as a result of the rapid industrialization, massive boom in the construction sector, and substantial surge in population estimated at 3% annually.

Several billion USD have been allocated by the government to tackle the increasingly challenging issue of waste management and disposal, industrial emissions, and pollution control. The private sector has also matched the government’s initiatives by injecting massive investments into recycling plants and projects aimed at minimizing the effect of accumulated waste on the environment. Visitors to the show included contractors, industrialists, project developers, hospital managers, farm managers, municipality representatives, environmental experts, as well as professionals, importers and distributors.

www.recexpo.com

New dust extractor from Scanmaskin Scanmaskin, manufacturer of concrete and stone floor grinding and polishing machines, is now launching their own range of industrial dust extracting vacuums. The range is extended with the new model ScanDust 6000. ScanDust 6000 is a low height model easy to load in to a van or car. It has a large capacity and strong suction with an easy filter cleaning function. ScanDust 6000 is developed to fit the larger floor grinding models from Scanmaskin, ScanCombiflex 650 and ScanCombiflex 700RC ScanDust 6000 is not only suitable in floor grinding applications but is optimal in all sorts of dust extraction. It is equipped with Hepa 13 filter. Scanmaskin now has a series of dust extractors and ScanDust 6000 is the biggest of them with a 5,5 kW suction motor. The other models are

ScanDust 3000 and the one-phase models ScanDust 2800 and ScanDust 1300.

www.scanmaskin.se

Aquajet Open day proves international success The latest Aquajet Systems open day held at the company’s production facility in Holsbybrunn, Sweden, proved highly successful attracting visitors from more than 12 countries. Guests were able to study and test Aquajet’s complete product programme during the two day event. “Setting a record, the high number of guests, confirmed that international interest in hydrodemolition techniques is steadily growing, not only in Europe but globally,” said Aquajet Systems managing director Stefan Hilmersson. “We are associated as being a leading company in developing technical solutions for hydrodemolition and are committed to present-

PDi • Issue 4 - 2009 • Oct - Nov

ing new products and techniques that provide increased efficiency and quality to our customers,” said Aquajet Systems sales manager, Jan-Åke Petersson. “This year was no exception and the latest version of the Aqua Cutter HVD Evolution attracted considerable attention.” Aquajet Systems robot programme has been extended with the new concept robot, MaxHybrid. Powered by an electric engine, it also features an onboard diesel engine as an alterative, according to the application. The new robot has an extended reach of 10 m, plus all the features of other Aquajet robots to provide the operator with significant flexibility.

www.aquajet.se

What do these countries have in common?

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Floor Prep & Few industry segments have experienced such a dramatic growth as concrete floor preparation during the last two decades. The floor preparation industry is much more then just preparing concrete floors as many other materials are used for flooring. This sector is very interesting because demolition, renovation, as well as concrete cutting contractors very often have the need for floor preparation on job sites. So many of these contractors have started to offer concrete floor grinding and polishing services as well.

Some years ago the founder and majority owner of HTC Sweden AB, Håkan Thysell, was asked how many square metres of concrete floor he thought there were in the world. He guesstimated at around 30 billion square metres worth about EUR 97 billion (US$145 billions). Other key people have been asked the same question and of course is very difficult to answer. However, all agree there is a huge amount of concrete flooring in the world and has been increasing rapidly as most of the buildings that are constructed now have concrete floors.

“Such potential” The concrete is often just the foundation and is covered with different types of coatings, such as epoxy resins, tiles and other types of flooring material. But as epoxy and similar are the most common type of floor covering it also needs to be replaced occasionally. It is estimated that about 60-75% of all concrete floors in the world are covered. Tim Van Der Veen at Husqvarna Construction Equipment say that an additional 25-35% of concrete floors is not either covered or polished (e.g. raw concrete floors that have no sealer, paint, epoxy e.t.c). The remaining, less then 5%, according to Tim, are assumed polished which means a great potential. Polished concrete floors have come to stay and can probably expect an faster growth over the next five years. Polished concrete flooring is even growing in popularity in private households as well as in industrial environments. This option has not yet taken off in Europe but is becoming very popular in USA. It is not only the visual appearance that is attractive, but also concrete flooring is also far more environmentally friendly and more cost effective than epoxy floors.

“Quite a journey”

Initially floor renovation and preparation was made with single head grinders, often rather difficult to work with and also very time consuming on large projects. Håkan Thysell with his company HTC Sweden is believed to be the first in the early 1990s to develop a new and more efficient method for preparing concrete floors. In HTC’s footsteps followed the companies Diamatic, now called Blastrac, and King Concepts, which is now part of Husqvarna. These three companies, together with maybe a few other manufacturers and with HTC as A floor grinder from General Equipment. leader, started to push the concept during the 1990s. First the focus was on machines and tools for floor preparation, like efficient removal of epoxy, glue and other types of covering in order to prepare a perfect concrete surface for new coatings. Next step was to convince the market that actually the concrete foundation was good enough to be used as a final floor product, after several steps of polishing. Even here HTC Sweden was first to launch a model with several polishing steps, which finally provided a high glazed concrete surface easy to maintain, was environmentally friendly and comfortable to walk on. They called the method Superfloor that is now very well accepted today. Currently most of the world’s manufacturers of concrete floor grinding equipment, as well as manufactures of different types of shot blasting, milling and cleaning equipment, also offer their own systems for high glazed concrete surfaces, including colouring and staining. The release of new and more efficient concrete floor grinding equipment started during the 12 PDi • Issue 4 - 2009 • Oct - Nov

Polishing 09

Issue 4 - 2009 • Oct - Nov •

PDi 13

The most recent floor grinders from Husqvarna, PG 280 and PG 400.

second half of the 1990s. The techniques have since been radically improved with more efficient grinding machines offering greater stability, easier maintenance, remotely controlled steering, more options and better handling of dust and slurry. The removal capacity, as well as the evenness, has been improved with multiple grinding heads and planetary systems in combination with more efficient diamond tools. The single grinders, which were initially the only option, are still used but the three or four head grinders now dominate, as they offer a more even final finish and are easier to operate. The size of the machines has also increased from the 20 to 45 mm diameter grinders to between 650 to 1000 mm for one planetary system and from 1 to 2.5m for two or more planetary systems working together. The really large scale grinding and polishing jobs are increasing, which will lead to the development of larger grinders in the near future, as there is a market for mega size grinders.

Massive interest

HTC 2500iX, yet the world’s biggest floor grinder with three planetary systems, cabin, integrated dust extraction system and a grinding width of 2.5 m.

Contractors that offer concrete floor preparation and polishing continuously need information and training about the advantages of these services. Also if designers and architects can be convinced about the advantages of using polished concrete as a final flooring product the concept will further increase in popularity. The polishing concept had its first major break through a few years ago, even though HTC launched it during the 1990s, and is still growing in popularity. At the latest World of Concrete show in Las Vegas around 55 companies demonstrated concrete floor grinding and polishing concepts, including diamond tools for concrete floor grinding. At the coming WOC show in 2010 at least 40 exhibitors are expected in this sector. World of Concrete is perhaps the best example of a show where these machines and methods have found the right platform and audience. But several other exhibitions have also seen the potential in this product segment. The Atlanta based show International Concrete Polishing and Staining Conference, is a good example of the strong interest for this sector in the US. The show, which took place 1 - 4 October this year, gathered a big number of suppliers. Building and construction equipment shows all over the world has started to target this sector. The DEMCON show in Stockholm next year is another example that will have a strong focus on concrete floor preparation and polishing and will also contain a large demonstration area. It will also be interesting to see the approach for this segment at Bauma 2010. The world’s branch associations for concrete sawing and drilling, demolition and industrial clearance have also included concrete floor grinding on their agendas. In many countries it is now considered a new service from these contracting groups and training is also organised from the associations. CSDA in the US is a good example of that. When a product segment develops at such a speed, as concrete grinding and polishing, there is a big risk of overheating. This is also something that not only affects manufacturers but also contractors that invest large amounts in equipment, tools and training. It is difficult for contractors to choose from a wide variety of brands and quality and pricing. The market is also experiencing a big number of low budget machines being introduced where just the colour and the logos vary, but are all made in the same Asian factory. This is the same for tools. For quite some time the market has been experiencing a tremendous price war on tools and there are numerous copies and patent infringements.

Reaching a hundred

The concrete floor preparation and polishing industry has seen a PDi • Issue 4 - 2009 • Oct - Nov

remarkable growth during the last two decades. From just a handful of international players 20 years ago there are now an estimated 60 to 70 manufacturers and could reach 100 in another five years. The following is a list of some of the manufactures: HTC Sweden AB, Husqvarna Construction Products, Blastrac Diamatic, Substratetechnology/STI/PrepMaster, Superabrasive, Inc., Schwamborn GmbH, SPE, Hamatic, Connex, Barracuda/Pengineer, Scanmaskin AB, Terrco Inc, SASE Company Inc, Klindex, EDCO Inc, VIC International, Innovatech, Rawan Enterprises, ONFLOOR, Oztec Industries Inc, National Surface Preparation Equipment, GranQuartz, BlastPro Manufacturing, Inc., Substrate Technology Inc., Kut-Rite Manufacturing Co., General Equipment Co, PROSOCO Inc, Pearl Abrasives Company, Concut Diamond Products, Citadel Floor Finishing Systems/RockSolid Floors, Universal Polishing Systems, CDC Larue, Aztec Products Inc., Diamond Concrete Tools, Diamond Speed Products, Inc., Diamond Technology, SMITH Manufacturing, US Shotblast Parts & Service Corp, Wagman Metal Products Inc, Zered Inc. Jack Midhage AB, Tyrolit, Diamond Products, Hilti, Huachang Diamond Tools Manufacturer Co. Ltd., Shingo Grinding Wheel, Reliable Diamond Tool, Inc., Lackmond Products Inc and Detroit Industrial Tool. Eight companies responded to the survey of the market and these are Marketing Co-ordinator Jonas Landt from HTC Sweden AB, Global Vice President Stephen Klugherz from Blastrac Diamatic, Product Manager Tim Van Der Veen from Husqvarna Construction Products, Sales Manager Len Sniegowski from Superabrasive, Inc, Marketing and Sales Director Gebhard Grass from Schwamborn GmbH, Marketing Manager Paulo Bergstrand from Scanmaskin AB, President Jim Vinella from Terrco, Inc and President Wei He from Pengineer A/S.

The size of the market? The first question in the survey was an estimation of the concrete floor preparation market. Jonas Landt at HTC said that Husqvarna Construction Products Hiperfloor preparation.

Below the Hiperfloor final result.

(USQVARNA±S SURFACE PREPARATION AND DUST COLLECTION SYSTEMS BOAST A UNIQUE BALANCE BETWEEN THE MACHINE±S POWER AND DESIGN AND THE TOOL±S SPEED AND EFFICIENCY 4HEIR PATENTED $UAL $RIVE 4ECHNOLOGY SETS THEM APART FROM OTHER MACHINES AND PROVIDES USERS WITH UNSURPASSED CONTROL FOR EVERYTHING FROM THE PREPARATION GRINDING AND POLISHING OF CONCRETE FLOORS TO THE REPAIR AND POLISHING OF TERRAZZO AND OTHER NATURAL STONE 7ITH (USQVARNA SURFACE PREPARATION MACHINES YOU DON±T JUST GET A BEAUTIFUL SURFACE YOU ALSO GET A HIGH QUALITY HARD WEARING FLOOR

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The Lavina series from Superabrasive polishing concrete in a warehouse.

The BGS 250 from Blastrac Diamatic.

Jonas Landt, HTC Sweden AB.

chain of retail owners who have 100 or more locations but it is the potential is unlimited. He added that almost every their wish to work on the premise of ‘single source responsibility’ to building in the world has at least one concrete floor that control cost and end product. In other decorative or lower volume needs preparation and has a potential to be converted segments we are focused on colour programs and overlays where to HTC Superfloor™, but did not have specific figures. square foot costs are less likely to be under pressure. He said that the challenge was to create awareness of the “2. The other problem possibly facing this market is continpossibility to refine concrete floors to HTC Superfloor and ued fragmentation of the diamonds and chemicals. While these see the great benefits of it instead of covering the floors with items represent a fairly low percentage of the price per foot they various coatings. seem to be the items that get the most attention from contractors Tim Van Der at Husqvarna Construction Products as cost savings, rather than quality equipment or labour compesaid that it is very hard to even make a guess but he thinks tence. Material handling is also a major concern so for all three of it is huge. these items Diamatic globally is working on smarter equipment, Len Sniegowski from Superabrasive declined to give spediamonds, and more user friendly chemical compositions with the cific numbers. “Because we are a global company that reaches leaders. We will introduce an extended line of grinders, material all over the world, I would have to say that the U.S. and Asia handling vacuums, and leading edge diamond and Europe are the top markets at this point technology all in 2010. for concrete floor preparation and polished “3. Diamatic USA will announce a new concrete but Australia, New Zealand and South partnership in 2010 at WOC that will signifiAmerica are coming up quickly to catch them,” cantly enhance the chemical side of polishing, says Len Sniegowski. addressing owners’ and contractors’ demand “The intangible things in the market make to create a longer lasting, user friendly material it very difficult to speculate with any degree of acthat can be rejuvenated. This new product will curacy what the global market value of concrete introduce polishing to several new market segfloor preparation and polishing is or will be. All ments not currently focused on. I can say is that, even in a recession, we have seen “4. As a part of long term polishing acgrowth all over the world through new distribuceptance, maintenance must be addressed. To tors and existing distributors getting creative in this note a new maintenance certification protheir approaches to existing and potential congramme and partnership will be announced in tractors. More new customers around the world 2010 as well as new line maintenance products, are preparing concrete and polishing concrete pads, and machines. These products have been with the Lavina Surface Preparation System launched in the USA in this last quarter and will than last year. Those customers will continue to find new projects and to offer their services as Mats Tikkanen, HTC Sweden AB. have a full commercial launch in 2010 at WOC in Las Vegas. To date, we believe there has been well as the older companies in the market who 500M-700M feet ‘professionally’ polished in have been polishing for 10 years now. Because a the USA that could use a level of maintenance. We expect this property increases in value when a Lavina SPS floor is installed that number to be in the millions in the future. will only drive the consumer to want more polished concrete “5. We also estimate that approximately 100M is being in their homes and work places.” maintained at some level but this is an educated guess based on Gebhard Grass at Schwamborn believes chemical sales and interviews with maintenance companies as that the market value is about EUR 200 to 300 well as some chains. This number should grow as Million when it comes to concrete floors that applications in broader markets accept polishing as have the potential to be converted in to a final the viable flooring solution.” flooring solution. “Divided in to certain regions I believe that The potential for polished Europe stands for some 25%, North America the concrete floors in refurbishment and same, Middle East, Asia, Australia and New Zealand new projects? about 35% and Africa and South America what Steve Klughertz eluded to this earlier and added: remain of the concrete floors that can be polished,” “While not all markets are equal we believe says Grass. the systems approach with a very deep Steve Klughertz from Blatrac Diamatic believes product offering is what contractors are that the early estimates on polishing published several looking for. Owners on the other hand years ago were a little premature in growth and size. accept the fact polished concrete is a The remote controlled Scan Com“While we believe the size of this market will grow above very real solution and flooring option, biflex 700 RC from Scanmaskin. any other sector, we also believe there are some inherit but given the relatively young market risks associated with polishing as it relates to staying (10-12years) there is still some matulong term at the forefront,” says Steve Klughertz, who rity to take place and probably some consolidation. If we want describes those risks as follows: this market to grow and be applied on all the available concrete “1. Contractor competence and quality of workmanship. This surfaces, quality, consistency, and contractor competence all need varies too much for some owners and architects, so we are focused on to grow. All jobs cannot be subject to the cheapest diamond or raising this quality and workmanship through specification enforcewatered down chemicals to save a few pennies per foot.” ment and working with the owners well before the contractors are Husqvarna’s Tim Van Der Veen thinks there is still significant involved to set proper expectations. This mostly relates to the large growth potential of this product. “Technological advances are being fuelled by the rapid rise in demand, providing opportunities for even further improvements in the economics and environmental benefits of this kind of flooring alternative. We believe there is still significant growth to come for this product,” he says. In terms of polished concrete floors in new products Tim adds: “I would say at this point it is still quite small since so many of the decision makers are still to learn about the properties and full benefits offered by polished concrete systems. Factors such as low life cycle costing, improved energy efficiency and reduced environmental impact are still to be fully understood by many who make the final decision on choosing the finished floor in

PDi • Issue 4 - 2009 • Oct - Nov

around 5-8% market share and will gain commercial and industrial applications.â&#x20AC;? around 5% per year. Len from US Superabrasive has so far seen Dr He Wei from Pengineer A/S is also very the largest growth in private homes and smaller optimistic saying: â&#x20AC;&#x153;Thanks to recently available commercial projects. water-based colour stains and fine concrete â&#x20AC;&#x153;With the down market in 2009 it clouds chemicals available, polished concrete will show our perspective a bit. My opinion is that over the its strong growing potential in the following last 10 years it has gained 0.5% of the market per two years, although epoxy and functional top year over all. The large box stores like Walmart, coatings are still the dominant floors installed are not included in that figure. Those markets are by our clients today. But I believe the polished pretty saturated,â&#x20AC;? says Len. â&#x20AC;&#x153;My opinion is that it concrete can gain 10 to 15% market share is still in less than 5% of all new building projects per year from top coating. Europe, North as a specification and less than 10% of the rehab America, Australia and New Zealand will be projects in our markets at this point. That can the main regions where there exists a high only increase as education and safety knowledge is shared with more and more consumers. If a Tim Van Der Veen, Husqvarna potential of converting existing concrete floor into polished floor.â&#x20AC;? concrete slab is involved, it will be in 20% of Construction Products. He Wei believes that currently less than new builds by 2020 and 15% of rehab projects 5% of new building projects consider polished by 2015. Polished concrete has an infinite amount concrete floor, slightly higher percentage for inof colour choices and design possibilities that make dustrial floors. However, he sees a quick increase it a much more economic solution than ceramic tile, of commercial floor of small areas being treated carpet and hardwood. Also, because epoxy flooring with polished concrete. has such a short life expectancy, it will soon replace it as the number one surface choice in garages and work shops simply because polished concrete will typically What type of floors dominates today? last as long as the building is standing. Jonas Landt at HTC says that resins, natural stone/ â&#x20AC;&#x153;But concrete polishing will only be considered terrazzo, wood, vinyl and concrete will dominate. in new projects if the architect knows about it before Polished concrete has been in use for quite somehand and it is specified. Most often the company or time in Scandinavia. person who ultimately occupies the facility, after it Tim Van Der Veen says that it depends on the Gebhard Grass, Schwamis built, will decide on the flooring options. Again, born GmbH. market sector. â&#x20AC;&#x153;In residential dwellings tile, stone, education and information needs to be made available timber and soft floor coverings, such as wool-blend about this amazing flooring option. To me there is no other option carpets, dominate. In commercial sectors it is a bit the same with when concrete is the subsurface.â&#x20AC;? tile, stone, vinyl, Terrazzo and resin floors and in the industrial Gebhard Grass from Schwamborn thinks that in his main sector only resin floors. ! ! " ! "! " ! " "" stands "" for "" ! " Len at Superabrasives says that it is epoxy for garages and market areas the polished concrete product segments

Len Sniegowski, Superabrasive, Inc.

He Wei, founder and owner of Pengineer AS which develops and manufacturers the well-know Barracuda tools as well as the new line of Barracuda floor grinders.

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PDi 17

shops, hardwood and ceramic tile in homes. Similarly Gebhard Grass at Schwamborn agrees and adds screeds, resin floors, terrazzo, natural stones and concrete.

Current and potential clients?

The new and popular floor grinder HTC 1500 ixT was recognized and awarded the Design Trophies silver medal during the trade show BATIMAT 2009 in France. During the award ceremony in Paris, November the president of HTC France, Thomas Forss, was presented with a statuette and a diploma.

The Blastrac 580 triple head grinder used for high glazed polishing. Below the 580 again during the first polishing steps.

He adds that the rental market seen the largest growth for them. “We continue to seek out the strongest rental stores in the US and bring them into our family of dealers and distributors. They offer a service centre and a retail point for our end users that makes it much more convenient that shipping our products all over the world. Also, new contractors are popping up everyday for concrete surface preparation and polishing. We are going after the newest companies as hard as we can.” Gebhard Grass concurs with Len. Gebhard who thinks the distributors are highly rated and valuable including the rental companies. Schwamborn has also an extensive direct sales operation as well as OEM manufacturing. Gebhard finds the highest potential in distributors including the rental sector as well as OEM sales.

has

The current users of floor preparation equipment have been contractors working with refurbishing, concrete sawing and drilling, light demolition, clearance and cleaning. But this sector of clients is quite narrow for those who develop systems for floor grinding and polishing. “We target all possible sectors related to the professional building and construction industry, including flooring contractors, cleaning industry, rental business and floor owners,” says Mats Tikkanen, Marketing Communication, HTC Sweden AB. Tim Van Der Veen at Husqvarna is more specific. “Our floor grinding products basically fall into the following three categories of use: Rectification, making good sub standard concrete substrates, such as rain-damaged or Positive and negative aspects? poorly installed concrete. Second category Two floor grinders from When the whole world is stressing the fact that new is demolition and refurbishment, removing Schwamborn, above DSM 530 methods for floor prep and concrete polishing is something surface overlays, such as screeds, adhesives S and below the DSM 250. really revolutionary it is easy to ignore the negative aspects. and coatings, and restoring the concrete Even with seemingly strong growth during recent years it back to a clean and flat condition in preparation for a new is uncertain to continue so what are the positive surface treatment or covering. Third category is floor finishing, and negative aspects? honing and polishing applications, such as Hiperfloor, Terrazzo Jonas Landt at HTC is certain that the current use and natural stone. of concrete floor grinding equipment and equipment for “Since these applications fall into so many market segments, concrete polishing will increase. The positive aspects are users normally fall into the following groups, which are concrete the impact on the environment, more durable floors in both installation and finishing contractors, concrete floor preparation industrial and public premises and less maintenance. The negacontractors, building and construction companies, flooring tive aspects are smaller non-serious actors on the market, both installers, concrete repair specialists, waterproofing contractors, regarding hardware manufacturers and contractors. industrial flooring contractors, professional grinding and polTim Van Der Veen agrees with Jonas Landt: “There are ishing contractors, terrazzo supply companies, environmental benefits in terms of polishing. We can say that architects and interior designers, maincompared to refurbishment of conventional floors, the amount tenance engineers and facility managers, of waste or disposal associated with polished concrete is basically government and civic project managers zero, if considered by volume. There are also economic benefits and residential home owners”. connected to polishing of concrete, which means low life cycle Tim finds the biggest potential in costs compared to conventional floors, reduced energy consumpthe Floor finishing segment. Especially tion due to reflective properties of polished concrete. There are the Hiperfloor polished concrete market also economic benefits in terms of floor preparation. Grinding where Husqvarna continues to see produces superior surface finishes and floor flatness compared to significant growth and market develother floor preparation machines. This reduces the overall floor opment. They especially see this in the installation cost as it reduces, and in some cases eliminates, the commercial flooring sector, for example, floors in retail stores and need for levelling screeds. Grinding also reduces the amount of commercial buildings. In some countries, particularly Australian resin and paint required to deliver a quality resin or panted floor,” and the USA, Husqvarna is also seeing extensive use of Hiperfloor says Van Der Veen. in residential dwellings. “The negative side of it, as with all new and expanding mar“Although the rectification, demolition and refurbishment kets, is that it can become quite fragmented with many different sectors are very large market segments for us, they are also quite interested parties desiring a ‘piece of the pie’. This can, and has, mature and we do not see explosive growth in them,” says Tim. created mixed messages at all levels of the supply and demand Len at Superabrasive values the distributors very much and sees them as a very important source for spreading information about their products as well as selling and training. “We are currently working with distributors and helping to train and educate end users world-wide. Architects, designers, builders and sub-contractors as light demolition, refurbishment and concrete sawing and drilling contractors are the main scope of our distributors,” says Len Sniegowski.

PDi • Issue 4 - 2009 • Oct - Nov

An example how polished and stained concrete floor can look like with the Superabrasive methond.

chain, as well as significant variations in quality of delivery. To combat this, much work is required to educate interested parties so we can be sure the customer receives what they want, and the contractor can deliver the standard the customer wants in an economically viable way. The development of agreed upon industry standards is a must, in conjunction with comprehensive training and certification programmes for contractors to ensure there is true competency in the market place,” adds Tim.

Large scale warehouse grinding and polishing with a number of Lavina grinders from Superabrasive.

concrete surfaces,” says Grass. He Wei at Pengineer A/S says, “There exists a bright future for polished concrete, due to its unique beauty and functionality. We at Pengineer AS will continuously contribute to this industry to further improve the quality of polished concrete. I can see some things that need to be improved concerning the more technical aspects. This is, for example, to properly fill up the micro pores to ensure inert concrete surface to be easy maintenance and last longer. Even shine between aggregates and cement, method and tools of efficiently expose and polish concrete, improved energy saving, environment-friendly green products for the future.”

The final result with Lavina.

HTC Sweden

Astonishing high glaze with the Superabrasive polished concrete floor method. Len at Superabrasive also believes this business will see a continuous increase for the foreseeable future. “There is so much unpolished concrete in the world that one can only imagine the possibilities of growth. Concrete is everywhere. The positive aspect as well as a negative effect is that the market is still new to most consumers. It is our job to help our distributors grow the contractor base in our markets. And we are doing just that,” says Len. “I would like to stress the importance of proper education to the consumer and the contractors who are considering polished concrete as an option. We offer a two-day seminar at our world headquarters in Hoschton, Georgia, USA that we like to call the ‘Navy Seal’ training course for polished concrete. It covers the floor preparation side of things as well as the decorative options available for polished concrete. We show a contractor how to sell a polished concrete floor to a consumer who is considering epoxy or tile as an option. The diamond tooling is one of the most underestimated facets in the concrete polishing industry as not all diamonds are made the same. We educate on that as well and that makes for a very well rounded concrete polishing contractor after they leave our facility.” Gebhard Grass thinks just like his colleagues that this sector will increase. “The trend of floor preparation and polishing will undoubtedly increase. As my colleagues say there are several advantages like cost savings, good image, environmental friendly compared to epoxy or resin coatings, easy to clean and maintain. The negative side of it is that the maintenance costs will be higher to keep a high gloss on polished concrete floors. Polished concrete also is not adaptable on all types of

Several companies have contributed towards this floor grinding survey and include some details of each starting with perhaps the leading manufacturer HTC. The company was founded in 1987 by Håkan and Gunn Thysell and is now owned by the company 3i. Turn over in 2008 reached just over EUR28.3M (US$ 42.3M) and has 160 employees. Head office is in Söderköping, Sweden with four fully owned subsidiaries and distributors in 60 countries. HTC exports globally with the biggest markets being the USA and Europe. HTC’s business concept is to develop, manufacture and sell professional floor solutions that take economy, ergonomics and ecology into account. HTC has machines that cover everything from edge grinding to grinding of very large areas. HTC’s floor solutions include everything from floor preparation to maintaining and cleaning floors. HTC has not only the widest machine range but also the widest range of diamond tools for floor grinding. The latest floor concept is called HTC Superprep™, which is a method for surface levelling and floor preparation. The concept HTC Superfloor™, polished concrete, launched in the mid 1990’s has become a brand known worldwide.

Tim Van Der Veen at Husqvarna has submitted some photos that give a good idea what polished concrete is about. First picture shows the first two steps towards a high glazed surface.

The Husqvarna PG 680 and the dust extractor DC 5500 in operation.

Husqvarna Construction Products Husqvarna Construction Products, part of Husqvarna AB, is the world leader in diamond tools and equipment for the construction and stone industries. HCP, which also includes the concrete floor grinding and polishing division, accounts for 25% of Husqvarna AB’s sales of professional products. The whole Husqvarna Construction Products has 2,100 employees. Husqvarna Construction

Above: Almost done and below the finished Hiperfloor.

The Husqvarna PG 680 and the dust extractor Husqvarna DC 5500. Issue 4 - 2009 • Oct - Nov •

PDi 19

Products has 10 main factories and the products are sold in approx 70 countries through its own sales companies or distributors. Main markets are Europe, North America, and Australia. The extensive product range for the construction industry includes power cutters, diamond tools, drilling equipment, floor saws, tile and masonry saws, wall and wire saws as well as machines for surface preparation and demolition. The complete line of floor grinders includes PG 820, PG 680, PG 530, the most recent machines are PG 280 SF and PG 400 SF and the dust collectors DC 5500 and DC 3300.

The HTC 650 HDC in operation.

Blastrac Diamatic 780 triple head grinder polishing concrete.

Below HTC Superfloor preparation.

Blastrac and Diamatic

For Blastrac with the Diamatic brand Diamatic Superabrasive Inc revenues are growing rapidly, since the brand has Superabrasive, Inc. with headquarters in Hoonly been re-introduced formally into the USA schton, Georgia, USA was founded by George this year. Growth percentages are misleadingly large Popov and George Georgiev in 1986 and the but the growth will continue through the economic company is still fully owned by the founders. recovery and beyond. Diamatic is a specialty brand Turnover is not available but the company has The new Barracuda X6 of Blastrac Global, whose revenues are approximately 250 employees. Superabrasive has two production from Pengineer AS. US$ 60M annually. Blastrac/Diamatic distributors are in plants in Krun, Bulgaria plus the world headquar88 countries from the Middle East to Australia to Latin ters in Hoschton. Sales are through a network of more then 75 America with corporate offices in San Diego, Oklahoma, Canada, distributors worldwide. The main product The Netherlands, France, Germany, UK, Spain, Dubai, Shanghai, segments are concrete grinding, polishing and Beijing, Singapore, and a new location in India for 2010. maintenance products and training, concrete floor Schwamborn GmbH preparation products and training, diamond tooling Schwamborn GmbH has more than 45 years manufacturing manufacturer and concrete grinding and polishing machines for the floor renovation, scarifying and grinding and machine manufacturer. Superabrasive is well known for offers around 30 different models. Schwamborn was founded in its Lavina 500 series SPS Machines ranging from: Wangen, Germany by Alois Schwamborn in 1935 The company is still owned by the Schwamborn Lavina 507 and 507E: 7” single head edge and corner family. Turnover data is not available but the company machine 2.0 HP 110V and 220V models Lavina 516 and 516E: 16” 3 head planetary floor machine has 40 employees. Head office and production is located 2.0 HP 110V in the same premises in Germany. The company’s and 3.0 HP 220V models main markets are continental Europe and southLavina 520 and 520E3: 20” 3 head planetary floor machine east Europe, Russia and North America. 4.0 HP 220V single phase and 7.5 HP 220V three phase models The product range contains single disc Lavina 525 and 525E3: 25” 3 head planetary floor machine 7.5 multipurpose machines ES 420S- STR 580 HP 220V single or three phase and 581-701-702S-703, Scarifiers BEF 203-201 10 HP 220V three phase models The new Scan Combiflex 250-301 and cold milling machines OMF Lavina 525N and 525NHV: 25” 3 head planetary floor machine 500 PD with Power Drive. 250, Grinder: DSM 250-430SL-530SL-500S 15 HP 220V three phase and 15 HP 480V three 530S-650S-800S phase models The company is launching the new DSM 250, edger and Lavina 532 and 532HV: 2” 6 head planetary floor machine grinder. In September a new PCD-Diamond range was launched. 20 HP 220V three phase and 20 HP In January Schwamborn will introduce their new heavy-duty 7.5 480V three phase models kW floor grinder DSM 530S and during the first quarter another Some recently released diamond tooling products are: heavy-duty grinder on 4 kW named DSM 530SL. V-Harr floor polishing pads in grits 50, 100, 200, 400, 600, 800, 1800, 3500 and 8500 (BUFF) Nato Economy diamond resin pads in grits 50, 100, 200, 400, 600, 800, 1500, 3000 and 8500 (BUFF)

Schwamborn edge grinder DSM 250.

Concrete Dyes: Superabrasive, Inc. carries the Ameripolish dye product line for all of its distributors. Bringing 22 vibrant colours into the Lavina SPS family of products New developments are about to be launched including a remotely control unit for the Lavina 525NRC and the Lavina 532 models. The Lavina 532RC will be the world’s largest remotely controlled floor grinding and polishing machine.

Chemicals: Lavina SPS Premium Densifier - Lithium based concrete densifier that dries in minutes and is ready for the next step of diamond tooling in 20 minutes. Lavina SPS Floor Glow - Lithium based concrete sealer that penetrates the polished concrete and gives a topical barrier against foreign liquids. Must be burnished with 8500 Buff pads.

Scanmaskin AB Scanmaskin was founded by Claes-Göran Bergstrand in 1975. The company is today owned by him and his son Paulo Bergstarnd. The current turn over is around EUR 8.5M (US$12,8M). Head office and factory are located in Lindome, Sweden and the number of employees is 20. Scanmaskin has four fully owned subsidiaries in the Nordic countries and Estonia. Sales are through direct sales company outlets 10 distributors. The main market is currently Scandinavia. The product range contains eight models of floor grinders and four dust extraction models. Scanmaskin also manufactures its own series of tools like the Snap-On removing tools SC-Tiger Twin, Gold and Silver and SC-Scratch with claw. The Snap-On grinding tool range consists of SC-Silver, Black, Brown, Blue, Green, Red, White and Yellow. Scanmaskin system for polished floors is called Glazed Floors and here the tool series Snap-On RDC for concrete polishing, contain qualities from #100 - #3000 and the Scan-Pad series for soft polishing of concrete also in qualities #30 - #3000. Scanmaskin also have their Snap-On Speedline series for polishing natural stone and terrazzo with qualities from #50 - #10.000 Scanmaskin has recently launched their new low built industrial vacuum named ScanDust 6000 together with the ScanCombiflex 45NS 1-phase grinder for concrete and natural stone grinding.

Pengineer and Barracuda

PDi • Issue 4 - 2009 • Oct - Nov

Dr. He Wei, who developed the original Barracuda grinding tool,

founded Pengineer AS in 2004. Pengineer AS has been developing its own floor Grinders also called Barracuda. The range contains three models, Barracuda X4, X5 and X6, which is the most recent. During 2010 another three models X2 (edger), X8 The Barracuda range. and X9 will be launched. He Wei says that he was very satisfied with the outcome of the recent International Concrete Polishing and Staining Conference in Atlanta where his products attracted a large audience.

TERRCO®

The name in Heavy Duty Surface Preparation and Grinding

SPEED SHIFT TOOLING SYSTEM Model 6200

Speed Shift Plate

20-40-80-150 Metal Bevel Edge Disc

Model 3100-3P

Terrco Inc US manufacturer Terrco is a well-known player in the US market and is based in Watertown, South Dakota with 11 employees. The company was founded in 1926 by Peter F. Vinella and is a family business. In 1953 the company was handed to Frank P. Vinella and in 1989 to James and Peter Vinella. The next generation in the Vinella family is in place to take over when the time comes. The products are sold directly and through a network of nine distributors. The North American market is the strongest but sales are down worldwide.

Shark’s Teeth for thick mil removal. Model 3100 LP

Trowel Buster for roughing hard troweled floor.

Epoxy cutter for thin mil & mastic removal.

Direct Drive System • Heavy Duty • Time Tested Low Maintenance • Quiet Change Tooling

Product Range (all direct drive except LP machine) Model 200: 5HP, electric, two head (six stones) with 20” wide X 10” cutting path Model 701-S: 7.5HP, electric, two head (six stones) with 28” wide X 14” cutting path Model 7500: 10HP, electric – four head (12 stones) with 20” wide X 20” cutting path Model 2000: 15HP, electric – four head (12 stones) with 24” wide X 24” cutting path Model 3100-3P: 25HP, electric, four head (12 stones) with 28” wide X 28” cutting path Model 3100LP: 38HP, LP, four head (12 stones) with 28” wide X 28” cutting path Model 6200: 40HP, electric, eight head (24 stones) with 54” wide X 28” cutting path, self-propelled

“74 Years in Business”

Model 2000

Visit us at World of Concrete February 2-5, 2010 in Las Vegas Booth 031541.

TERRCO®, INC.

Watertown, SD 57201 • (605) 882-3888 • Fax (605) 882-0778 E-mail: info@terrco.com • Website: www.terrco.com

Diamond Tooling

16, 20, 30, 40, 80, 150 grit metal bond Bevelled Edge Disc in 10 different bonds Specific Blue Bond for Thin Mil Epoxy & Mastic removal Sharks Teeth PCD’s for Thick Mil removal Specific Shavers for cracking open hard troweled concrete floor Improved Metal/Resin Patented Speed Shift System for Quick Change of Tools

The pictures above are showing some surface preparation equipment from Terrco including the final product.

“The Proof’s in the polish”

Since 1986 Superabrasive, Inc. has been manufacturing, engineering and testing diamond tooling. From creating the only diamond tipped drill bit to drill through super-hard polymers, to creating and patenting dozens of diamond tooling pads for many major manufacturers of concrete polishing machines, Superabrasive has been done a good job.

First floor grinder in 2001 In 2001, Superabrasive, Inc. set out to create its own concrete polishing machine and named it Lavina (the Bulgarian word for avalanche). Burdened by other manufactures not giving them the exact parameters of their machines, the Superabrasive engineers had to guess at the mathematics involved in engineering the proper diamond tooling pads for each machine. By controlling the diamond tooling and machine manufacturing, Superabrasive was able to put together an advanced concrete grinding and polishing system. According to themselves the most advanced on the market today. The machines look simple and very easy to use. They are quiet and registering extremely low on a decibel meter. “The secret is in how the machines are engineered and manufactured,” says President of Superabrasive, Inc, George Georgiev. They now manufacture many different size and horsepower machines to satisfy

any concrete polishing crew’s needs. Georgiev says, “The difference in a Lavina SPS floor and our competitors’ one can be seen in many ways. First of all, we used to manufacture the diamond powder ourselves. We did the entire process starting from graphite and by applying the right amount of heat and pressure we created the diamonds that were used in many tools. This expertise proved invaluable later, when Superabrasive was able to control the quality of each diamond used in manufacturing. “Because we can check the quality of each used diamond, we ensure the best performing diamond tools on the planet.” US National Rental Sales Manager Len Sniegowski says, “The proof is in the polish. That has become our slogan around here.” Concrete Products Manager Mark Elliott adds, “I’ve been here at Superabrasive, Inc. for over 9 years and there hasn’t been anything close to a Lavina SPS floor that I have seen since we incorporated our step-by-step system. For years, we didn’t believe in using chemicals, such as densifiers or sealers, on the concrete. But now, we have found partners in the industry that make the chemicals just the way we like them in order for our customers to receive the optimum concrete polish every time. It’s pretty exciting to watch a customers’ face when he puts our patented V-Harr polishing pads on his Lavina machine and the shine absolutely ignites. It’s impressive, to say the least.”

“Take your time grinding” According to Len Sniegowski at Superabrasive there are some mistakes often made when grinding and polishing a concrete floor. “One of the biggest mistakes that people make when polishing concrete is going way too fast during the grinding process. You must first grind the floor open in order to process it properly. You can always tell when a guy has rushed through the grinding process. The floor looks blotchy, streaky or it is full of large swirly scratches on the surface. This can only be avoided by slowing way down during your first diamond tooling step. If you start with 30 grit metal bond tools, then that will be your slowest step in the entire process. Don’t rush it. If the whole job takes 10 hours, spend 5 hours grinding. The polishing steps go so much faster and better when you take your time with the grind. We grind at a slower RPM, so it only makes sense to move much slower. When we get to foam heads and resin pads, we can move a bit faster because we step the RPM up to 800. The diamonds are hitting the floor much faster so you don’t have to sit in one spot for so long. Also, when you get to the resins, you are not removing a lot of concrete so it doesn’t pay to go super slow. Go slow on the grind so you can make up some time on the polishing steps. Another big mistake is using cheap Densifier or not using it at all. The problem here is that people are trying to polish the hardest surface possible and if one skip this step he run the risk of wasting the resin Issue 4 - 2009 • Oct - Nov •

PDi 21

tools on a soft concrete surface. They will literally disappear before the operators eyes in about 100 square feet. A good resin pad should last roughly 10,000 sq ft. Also, a cheap Densifier will be mostly water and the chemical reaction with the cement that surrounds the fine aggregate in the concrete will be minimal and that would undermine the whole process of densifying the concrete in the first place. So never skimp on Densifier,” says Len Sniegowski. Superabrasive, Inc. encourages anyone to come to their Headquarters in Atlanta, US and see for themselves how easy a Lavina SPS floor is achieved. They provide monthly two-day seminars for anyone who wants to learn the craft of concrete polishing. Len Sniegowski says, “We have made Superabrasive, Inc. a one-stop-shop for our distributors, to eliminate a lot of the guess work involved with ordering products and receiving training. We actually listen to our customers’ feedback, so you can bet we are improving on perfection all of the time.” There have been many advances in diamond tooling and concrete grinding and polishing machines that Superabrasive, Inc. has created over the years. The invention of the replaceable, tapered small terrazzo plug and the NATO resin pad, just to name a few, have had the competition scrambling to follow suite and copy or come close to copying their technology. Not to be out done is the V-Harr polishing pad. “They make a world of difference in the polish after 800 Resin,”

says Mark Elliott. “Nothing polishes concrete, marble, granite and terrazzos like V-Harr pads do. Nothing.” With that kind of confidence behind their products you can see why Superabrasive is enjoying so much success in a very tough economy. Concrete polishing is actually on the rise but the economy has slowed the amount of polishing that is being done by each contractor. It has not stopped though new companies from forming and starting their own businesses as concrete polishing companies. “They are popping up everywhere we do a demonstration for one of our distributors. It’s fun to watch them get excited and go off on their own as business owners. Again, the proof is in the polish,” says Mark.

www.superabrasive.com

Surface Grinding: Tungsten Carbide

Beyond the Surface Dennis Von Ruden, the President of General Equipment Company, based in Minnesota, USA, shares some interesting thoughts based on his his long time experience working in the US surface preparation equipment. With increased emphasis being placed on the repair and restoration of our infrastructure, a growing number of contractors are faced with the challenges associated with removing a wide variety of coatings from surfaces. Contractors must now deal with the task of not only removing the coating, but preparing the surface for a new coating application. In these situations, contractors must make three important decisions: 1. The type of coating that needs to be removed. 2. How to economically remove and dispose of the coating materials. 3. How to properly prepare the old surface for a new coating application.

“Everything is not epoxy” Most facility owners do not know what type of coating material is on their floors, when it was applied or who performed the work. Most owners look at every material as an epoxy, so much so that the word has become a generic term for most types of floor coatings. There are literally thousands of epoxies being produced by a similar number of manufacturers. Urethane-coating technology has seen explosive growth in recent years and now, likewise, thousands are available for almost any application. Much like epoxies, wide variances in urethanes exist in curing time, curing thickness and adhesion requirements. Material disposal is also becoming an important consideration. Gone are the days when an old coating could simply be loaded up and dumped at the local landfill. Now, issues pertaining to environmental risks, hazardous material permits and specialized disposal costs are important considerations during the bidding process, because many of the older materials contained asbestos or other materials now classified as hazardous. The classifications bring new meaning to compliance with air quality standards and even safety equipment considerations for workers during the coatings removal process. The next problem is identifying and selecting a process that will most effectively remove the surface coating. For removal of surface coatings, there are now many processes available that can be utilized to meet most expectations.

PDi • Issue 4 - 2009 • Oct - Nov

matrix materials and hardness values are used to control the finish wear rates. For example, a more abrasive coating may require the use of a harder matrix material to control segment wear rates. A diamond grinding system is favoured for removing many thin film coatings or those coatings with hardness values that preclude the use of any other system. Some urethanes and even a wider variety of epoxies fall into this category. Coatings with a thickness greater than 0.10 inch can normally be removed more quickly with other attachment designs. How does a contractor know if a diamond grinding system is the solution for a specific job application? The answer is to consult the various system manufacturers for their technical expertise. The general rule is that a diamond grinding system will always remove a surface coating. Besides generally higher productivity rates, a diamond grinding system normally exhibits a long service life that can approach 4,600m2 for typical removal applications. The question then becomes a matter of production rates versus operating costs. Is there an alternative that is even faster and less costly for the job? Depending on the specific application, there can be more productive alternatives.

Because surface-coating removal can involve many unknown variables, it is impossible for one specific machine or process to address every problem. In fact, it is not uncommon for a number of different surface preparation machines to be used on the same job. The nature of surface preparation is very subjective. Many times, the answers to surface preparation problems are not black and white, but different shades of grey.

Surface Grinders Surface grinding equipment has been in use for more than 40 years, with dual-head, counter-rotating units being the most popular. The original concept of surface grinding equipment was to repair damage caused by improper concrete placing techniques or environmentally related factors. But as surface grinder use has become more popular, a number of manufacturers have developed a greater variety of attachments to increase their functions. For the last 30 years, the most popular attachment for surface grinders has been silicon carbide impregnated grinding stones. With stones ranging from six grit for rough grinding to 180 grit for smooth grinding, these have always been popular for grinding concrete surfaces. However, the porosity of grinding stones allows them to clog very quickly, making them highly unsuitable for most coatings-removal projects. Over the years, other attachments or processes were developed specifically for surface coating removal. Of these, only two types of attachments have earned an excellent track record.

Surface Grinding: Diamond Systems About 20 years ago, diamond-grinding systems were first developed as attachments for use with surface grinding equipment. It was soon realized that the anti-clogging characteristics of diamonds made this attachment ideal for quick and efficient surface coatings removal. Late generation diamond grinding systems are still an effective solution for many specialized coatings removal projects. While diamond hardness has been consistent, a wide variety of

Probably the most important attachments for coatings removal are tungsten carbide inserts. A common design feature of the systems currently on the market positions the insert at precise angles to the surface. During operation, the insert edge must first penetrate the coating and then use a combination of weight and relative movement to scrape the coating away from the surface. Ideally, for longer service life, the tungsten carbide formulation should be as hard as possible. But given real world conditions, hardness and damage resistance must be properly balanced. Several factors govern the service life of the insert edge, but experience has shown a single edge to be capable of delivering one to eight hours of use. The most important factor that limits the effectiveness of tungsten carbide insert systems is the coating itself. If the thickness will not allow the insert edge to properly penetrate the coating, productivity rates can be significantly reduced. If the hardness value of the coating also prevents the edge from properly penetrating, the scraping action will be reduced. The process is weight sensitive. Therefore, adding external weight to the surface grinder can substantially increase productivity rates when removing marginal materials. However, the vast majority of paints, material residues, epoxies and urethanes can be quickly and easily removed with the tungsten carbide insert system attached to a dual head surface grinder. How do you determine if such a system will work for your project? The answer is to place the blunt edge of a standard file against the coating. Tilt the file so that the blunt edge makes a 15° angle with the surface and press down on the file handle and move back and forth. If the blunt edge begins to remove the coating, the tungsten carbide insert system will probably be an effective solution.

Planers Sometimes referred to as scarifiers, surface-planing equipment is normally used to deliver a very destructive action against both vertical and horizontal surfaces. Sizes range from small handheld units to large self-propelled machines. Their most common uses include removing traffic lines, milling misaligned concrete slabs and preparing floors for topcoat applications.

Scabblers Use of pneumatically powered scabblers is normally reserved for removal of thick layers of concrete from floors and walls. Scabblers produce fast, effective results when removing base materials. The secret of using a scabbler for coatings removal is bit configuration combined with reduced airflow and pressure rates, which work in unison to regulate piston speed,

impact energy and number of blows per minute. These parameters control the actual work performed by the tool. By controlling the impact force and movement frequency, the destructive nature of the bit can also be controlled. Determining the right combination of airflow and pressure can remove coatings with surprisingly little damage to the surface material.”

The Future Demolition contractors are faced with a growing number of challenges that directly affect the bottom-line operation of business. As competition forces contractors to diversify services, being able to perform a wide range of surface preparation related tasks will be an important step in meeting those tough business challenges for years to come. Selecting the proper machine and process involves accumulation of experience, skill and practical sense. With more advice and experience from the manufacturer, profits will be more quickly maximized and related problems minimized.

New SG24/GHP Propane-Powered Surface Grinder from General Equipment

Grinder is a new grinder designed to break up soft to hard surface deposits, and to clean, polish or expose aggregate slabs for a multitude of purposes. The propane conversion allows for use indoors when electric models are not an option. The twin counter-rotating discs can work a 24-inch by 12-inch area. An increased wheel base places more weight over the rotating heads, meaning added pressure to the floor or work surface to produce better results. The propane-powered SG24/GHP is also ideal for buffing and polishing terrazzo and marble surfaces, and for removing floor coatings, such as urethanes. The SG24/GHP is available with a wide variety of attachments to accommodate many different job demands. Attachment options include scarifiers, wire brushes, grinding stones, Clean Sweep™ floor brush, CARB-A-TACH™ carbide grinding system, DIAM-A-TACH™ diamond segment grinding system and the SCRAPE-R-TACH™ coatings removal system. Other optional equipment includes the PLAS-T-LOK™ attachment mounting wedge and the Safety and Dust Shield.

www.generalequip.com

2010

General Equipment Co.’s SG24/GHP Propane-Powered Surface

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“Power Drive” inst The Swedish company Scanmaskin has been supplying other manufacturers flooring equipment since 1975. But since 2003 the company has been manufacturing and supplying its own assortment of machines for floor preparation and polishing of concrete and stone floors. Now with a brand new production facility Scanmaskin is preparing to conquer the world market.

A lot of manufacturers and suppliers to the global building and construction industry are suffering from the recession and few new machines are being purchased. Contractors are using their existing equipment until it literally falls apart. It is mostly consumables that are bought to keep the equipment going. But some manufacturers are affected less than others and one of those is Scanmaskin Sverige AB, based in Lindome outside Gothenburg, Sweden.

Increased export

“Of course we also sense the recession but in general we manage rather well and better then we have expected. And now we feel that business is taking off,” says company founder, part owner and President Claes-Göran Bergstrand. “Our sales level is just over EUR 270,000 (US$408,000) per month, which I think is satisfactory and at a level where it should be.” It is mainly the increasing export activities that have contributed to the improvement. In recent years Scanmaskin has strengthened its presence in the European market by building up a strong network of distributors. Scanmaskin has distributors in all German speaking countries as well as France, Benelux, Spain and Portugal. They also have their own subsidiaries in Norway and Finland as well as distributors in Denmark and the Baltic states. About 70 % of the current sales come from the Nordic region. The goal within the next few years is for exports outside the Nordic countries to reach half of the total company turn over. Current the turn over is about EUR 5.6 M (US$ 8.2 M) but the goal is to reach above EUR 17.5 M (US$ 26.1 M) by 2012. With the same sales speed as of today they have very good chances to reach their goals in 2012. “But we need to strengthen our export outside EU to reach our goals and we are getting there slowly. Today we send machines through our own distributors in the US, Australia and New Zealand. We also The cogwheel is an important part have directly to other markets like countries of the patented drive system “Power in the Middle East,” says Marketing Manager Drive” from Scanmaskin. Paulo Bergstrand, who is also part owner of the company. In Australia they recently set up a co-operation agreement From the left Claes-Göran Bergstrand, Paulo Bergstrand and with Traxx Construction Products, headed by Lloyd Williams. Martin Persson with the latest development Scan Combiflex Traxx is a new company but the people behind it have been 500 PD. working with the professional concrete sawing and drilling, demolition and floor grinding industries for decades. “Traxx Scanmaskin’s machines waiting to is very aggressive with their sales and we have good hope for “Epoxy still dominates” be delivered to customers around Australian sales in particular,” adds Paulo. Scanmaskin is not putting on the brakes during the recession. the world. Instead it is full speed ahead and a sign of that is the new head office and manufacturing facilities. The new plant is about some 2,000 m2, with 1,600 m2 making up the new production area and the rest offices for marketing and administration. The new premise in Lindome has 20 employees. The activity is divided between the two companies Scanmineral and Scanmaskin. Scanmineral manufactures filler components like epoxy to joint free industry floors. Scanmaskin develops and manufactures machinery, equipment and tools for grinding and polishing of concrete floors. The current turn over of EUR 5.6 M (US$ 8.2 M) is divided about 50/50 between the two companies, but Scanmaskin grows faster. But still joint free epoxy floors are a strong market and dominating. Polished concrete floors get a lot of attention today but according to Claes-Göran and Paulo it is an 80/20 relation between the two The new premises in Lindome, Sweden.

PDi • Issue 4 - 2009 • Oct - Nov

tead of Recession sectors. Polished concrete floors are quickly gaining ground and they believe that the relation will be 60/40 in a few years. The business in Scanmineral is still very important and a lot of floor grinders are sold for floor preparation and removal of glue and epoxy to make new epoxy floors. The environmental aspect has long been a big issue in terms of epoxy floors as this type of floor contains a lot of chemicals. Today several new types of more environmentally friendly coatings are available.

Products with “Power Drive” It was in 2003 that Scanmaskin started manufacturing its own floor grinders. Until 2003 Scanmaskin sold the Dutch trademark Diamatic, which is now owned by Blastrac, in Sweden. But today the range only contains Scanmaskin’s own assortment of eight different models. The smallest is the edge grinder Scan Combiflex 180 EG followed by the floor grinders Scan Combiflex 270S, Scan Combiflex 45, Scan Combiflex 500 PD, Scan Combiflex 500i, Scan Combiflex 650 and Scan Combiflex 700 RC. Scan Combiflex 700 RC is the biggest model with three grinding heads and a grinding width of 700 mm. It can be equipped with a remote control and manoeuvred with either radio control or cable. The big news is the new Scan Combiflex 500 PD. PD stands for “Power Drive” which is a patented technical solution for the drive of the grinding heads that optimizes the use of the machine up to 90 to 95%. The straps that pull the grinding heads have been replaced with a cogwheel. The Power Drive function is available for grinding concrete and stone. “Power Drive gives the machine much more power, it becomes more stable, and the operation is softer and even as the problems with skidding straps are eliminated. The straps and the fact that they are skidding often reducers the impact of the machine as available power is maybe only up to 75 to 80%. We have had the cogwheel on our 650 and 700 models before but now it is standard even on the 500,” says Scanmaskin Technical Designer Martin Persson. Another new machine is Scan Combiflex 650 built for tough treatment and grinding of large areas. It incorporates

several characteristics that make it safer for operators. The 650 is also available with different options. A water hose can be connected or a special water tank installed for the access of water during wet grinding.

Satisfied customers The goals for Scanmaskin will be achieved by releasing a number of new models in the years ahead. Several new products are in the pipeline and a new large machine will be released during 2010. Focus is on floor preparation of concrete and terrazzo floors as well as wood. But Scanmaskin also wants to develop the concept for polished concrete floors they call Glossy Floors. Scanmaskin has a variety of clients, which are general flooring companies, light demolition, renovation and concrete cutting contractors as well as the rental industry. One of these is the flooring company JIGAB based in Jönköping, Sweden. JIGAB used the Scan Combiflex 700 RC to grind an asphalt surface that had to be replaced with an epoxy floor. JIGAB has several Scanmaskin models and is very satisfied with the brand. “I think the remotely controlled 700 RC works great. The radio control is great and the machine is strong and very smooth to work with,” says JIGAB operator Steve Lordan, adding that the radio control makes the work very easy as the machine precisely follows his commands. Polishing of concrete floors is growing in demand but still epoxy dominates and he estimates that polished concrete floors represent about 40 % of the work for JIGAB and the rest is epoxy.

Above Steve Lordan with the Scan Combiflex 700 RC. Below from the left Steve Lordan from JIGAB and one of Scanmaskin’s salesmen in Sweden Johan Lindqvist.

www.scanmaskin.se

Issue 4 - 2009 • Oct - Nov •

PDi 25

Like most machine and equipment sectors within the construction industry hydraulic, pneumatic and petrol driven breakers have suffered badly during 2009.

Serious drop in 2009 The downturn appears to have come to a halt, but sales will remain on the same low level throughout 2010 and will slightly increase in 2011 and 2012. Companies PDi contacted believe there will be a dramatic drop this year and could end up half the size of figures achieved in 2008. With so many small breaker manufacturers in Asia it is hard to estimate total sales of breakers, but could be near the 40,000 mark and about half of sales in 2008. Contractors have less work so their lower income has lead to far fewer purchases of new equipment. However, many contractors are in need of updating and renewing their machine and tool fleets, but instead they are repairing and maintaining their old equipment while replacement is put on hold.

Activity beats the crisis The downturn will probably lead to fewer suppliers and the weakest will probably try to offer products at lower prices and this will have a negative impact on the market. Those bigger suppliers with power, strength and are prepared for the downturn will survive. They will use the downturn as an opportunity to boost their market positions and possibly lead to increased market shares. This is the time for continuous product development and releases of new products. But this cannot be done unless suppliers prepare for the good times a head. The key is

PDi â&#x20AC;˘ Issue 4 - 2009 â&#x20AC;˘ Oct - Nov

to maintain market appearance in a downturn and even more so than in the good times. Only a few suppliers really follow this principle and will have a very good chance to come out even stronger after the recession. It is heartening to see that many breaker manufacturers are practicing this philosophy.

Atlas Copco attacks Atlas Copco is a very good example of a manufacturer that is attacking the market and has released several new products during the last 12 months. The company has added the SB 452 breaker, the seventh model in its solid body light breaker range. The SB 452, for use with excavators up to 13t, offers the highest performance and breaking power in its class thanks to a new hydraulic system that delivers higher efficiency and improved energy recovery. New since July this year is the MB 750 hydraulic breaker with reduced lifecycle cost and up to 54 % more percussive performance. Two thirds of the life cycle cost of a breaker is made up by factors as operator cost, energy and fuel consumption, as well as service and maintenance cost. To reduce the life cycle cost of machinery and tools is a major market demand and Atlas CopcoÂ´s latest addition to the medium breaker range, the MB 750, matches this challenge and with more percussive performance compared to its predecessors. More percussive power does not mean that the breaker adds extra weight to the carrier. Thus, the MB 750 allows the use of a smaller breaker and carrier for the same kind of job. This helps to bring the investment cost to a lower level and reduce the fuel consumption significantly. Together with increased productivity these are the main contributions to reduced lifecycle cost. The high operational efficiency of the MB 750 is devoted to a combination of oil and gas power and energy

recovery by utilizing the recoil effect in the best possible way. This boosts the output power of the breaker without increasing the hydraulic input power of the carrier, which results in less fuel consumption during operation. Atlas Copco breakers contain a highly effective noise and vibration damping system. The new MB 750 is no exception with its guaranteed sound power level of 118 dB (A). Atlas Copcoâ&#x20AC;&#x2122;s VibroSilenced system isolates the percussion mechanism acoustically from the external guide system and helps to prevent damaging vibrations that could be detrimental to both the carrier and the operator. A new feature on the MB 750 is the double retainer bar system, which maximizes the service of the tool and retainer. Extra long retainer bars provide a maximum contact surface to the tool and the lower hammer, and they can be used on both sides for extended service life. Double retainer bars offer higher wear resistance than a retainer pin and are a reliable and proven locking system for the working tool. The MB 750 is optionally available with the patented DustProtectorTM II, a two-stage sealing system with coarse and fine wipers that reduce the penetration of abrasive dust into the lower part of the hammer. DustProtectorTM II also keeps the lubricant around the wear bushing for a longer period of time, lowering grease consumption. The system reduces wear on the bushings and the hammer and protects against damage. The MB 750 is ideal for secondary breaking, demolition, excavation and trenching, tunnelling, and special applications such as underwater. Another new breaker is the HB 3600, which fits the 35-63t carrier weight class. It delivers 46% more performance per kilogram service weight compared to the average of other hydraulic breakers in this class. And compared to competitive products of equivalent weight, the HB 3600 offers a 30% higher efficiency, the company claims. During 2008 Atlas Copco sold more than 10,000 small breakers in the 50 to 550 kg class. Three years ago, the company launched the first of the new generation of solid body breakers based on a new manufacturing method and new body design. Atlas Copco has launched the mid-range model, the SB 302, for excavators of up to 9t.

The slim design of the SB 302 makes positioning easy. The compact dimensions also facilitate working in confined applications such as indoor demolition work, along house walls and in narrow trenching. The SB 302 offers the highest performance and breaking power in its class thanks to a new hydraulic system that delivers higher efficiency and improved energy recovery.

In July Atlas Copco also launched the new TEX PE range of vibro-reduced pneumatic hammers. By re-thinking the design of vibro-reduced pneumatic hammers, Atlas Copco has developed three unique hammers, containing a number of features like a new vibro-reduced housing, multiple gripping surfaces and a large D-handle. The new range comprises the chipping hammer

Issue 4 - 2009 â&#x20AC;˘ Oct - Nov â&#x20AC;˘

PDi 27

TEX 05PE, developed for smaller jobs in softer material, and the medium-weight pick hammers TEX 09PE and TEX 12PE, designed for medium to heavy applications in brick, concrete or other hard materials. The multiple gripping surfaces give the operator the possibility of choosing an optimum working position. All three hammers have a large Dhandle with enough room for a gloved hand. TEX 09PE and TEX 12 PE are also equipped with a flexible front handle that provides excellent support.

RedHawk from CP Chicago Pneumatic, part of the Atlas Copco Group, is launching a new gas powered breaker Red Hawk. This is a tough and easy to handle tool that does not depend on an external power source with hoses or cables attached. It is an ideal tool for quick jobs and easy portability, such as use in breaking concrete, cutting asphalt, tamping and compacting soil, driving posts, fences, rods or spikes, in soil sampling and in driving profiles and tubes. Transportation to and from a worksite is in a van or the back of a car. The vibration level is unmatched in this tool class and at 2.4 m/s2 is by far the lowest level on the market. Thanks to new vibration-dampening handles, a slim body design and a low service weight of 22.5 kg, Red Hawk is a tool that offers maximum ergonomic protection and easy handling for the operator. An easy engine start, due to efficient choke control and carburettor, rounds off a state of the art

28 PDi • Issue 4 - 2009 • Oct - Nov

product that completes the Chicago Pneumatic handheld product range. Chicago Pneumatic is well known for its pneumatic tools and in 2008 the company added a wide range of handheld hydraulic tools and the new gas powered Red Hawk breaker completes the handheld range. Technical data: Red Hawk, Weight, lbs Length Depth, inches Width Tool shank Sound level, dB Vibration level, m/s2 Engine type Power, kW Cooling system Starter system Rec. fuel Oil type Oil mix Fuel capacity, Gal Fuel con., Qt/hr Impact energy, J Impact rate, bpm

Model 50 lbs (22.5 kg) 27.3 in (694 mm) 11 in (281 mm) 23 in (585 mm) 1/2 x 4 1/4 in (22 x 108 mm) 107 (Acc. to ISO 3744) 2.4 (Acc. to ISO 8662) 185 cc 1-cylinder, 2-stroke 2 Forced air Recoil starter Unleaded premium two-stroke 2% 1:50 .35 (1.2 l) 1.48 (1.4 l/hr) 24 2600

“Hilti breaks the rules with the new Hilti TE 1000-AVR” Performance and operator comfort come together with the new Hilti TE 1000-AVR Breaker. Featuring the lowest vibration in its class, the TE 1000-AVR has the power for outstanding demolition productivity yet offers the flexibility to reduce impact for precision work. For everything from demolition of concrete slabs to digging in clay to heavy floor tile removal, the TE 1000-AVR is the perfect choice. With 16 foot-pounds of energy, the TE 1000-AVR provides a demolition impact unparalleled in its weight class, making it a productive tool for a wide range of demolition applications. Even with all that power generated by the 1,600-watt motor, the TE 1000-AVR is built for long service life. An active cooling system reduces wear and tear, the three-chamber sealing helps keep dust out of the tool and the innovative brushless SR motor eliminates the need to replace carbon brushes. The result is longer intervals between service and twice the expected tool life. Utilizing Hilti’s AVR, an advanced vibration reduction system, the TE 1000-AVR achieves the lowest vibration in its class, aiding operator comfort and allowing the operator to be more productive by working longer. For precision work, the TE 1000-AVR’s Power Reduction Switch cuts the impact by 30% to improve handling and control in sensitive applications. The TE 1000-AVR’s flexibility for use in a variety of

applications is due to its compatibility with an array of Hilti chisels. Pointed, narrow, flat, tamping and spade, Hilti TESP self-sharpening chisels provide strong breaking power and are completely compatible with the TE 1000-AVR. Also compatible is the new Hilti TE DRS-B Dust Removal System that reduces cleanup time and captures fine dust for a better working environment. The Hilti TE 1000-AVR is built to provide long-term service under the most rugged conditions and is backed by Hilti Lifetime Service, a unique service agreement that includes two years of no-cost coverage.

JCB’s new low vibration breaker Innovative technology has resulted in the creation of a new JCB handheld breaker with hand arm vibration levels, which are more than 50% better than any other breaker in its class, the company claims. The specialist technology within the HM25LV includes a new power cell to deliver unrivalled blow energy while a revolutionary new concept in vibration control means that at 1.59m/s2 (BS8662-5) it is the lowest vibration handheld breaker ever made. This equates to a three-axis level of around 3.2m/s2, which is less than half that of any competitor’s equipment. Operators can now safely use the breaker for a full eight-hour working day without risk of exceeding recommended HAV levels longer than any hydraulic or electric breaker. JCB developed the concept in conjunction with a leading vibration research university following a vision of eliminating contact between the breaker and handles. The groundbreaking system dispenses with the traditional design in which HAV was controlled by conventional springs and rubber bushes. Instead, the handles on the active head of the breaker are effectively floating as the pin is supported by hydraulic pressure. As a result, the only vibration in the handles comes from friction against linear ball bearings. The handles on the HM25LV are also 50mm lower than on the previous HM25 version and feature increased protection.

FRD XPerience fully implemented in Europe Latest additions from FRD are the FRD XPerience Line of breakers. A new shock-absorption system minimises transfer of vibrations to the base machine, considerably reducing loads for the user. Thanks to a new guiding system in the casing and rubber gaskets in the bores, an extra noise reduction of 6 dB(A) has been achieved. The seven models in the new FRD XP-Line weigh from 1.3 t for the F19XP up to 6.5t for the F100XP and are designed for excavators of 12 to 100 t. The breakers, which are also suitable for underwater work, are fitted with a piston lift adjustment, which adjusts the number of strokes in accordance with the specification of the base machine. Like its earlier models, the FRD XPerience-Line has an idle-blow prevention system. If the

breaker is not in the correct working position, the breaker will not start at full power. This relieves the chisel and rod pins, promising longer life. The front chisel guidance sleeve can be changed from the outside, without the need of removing the breaker from the casing.

News from Promove Promove chose Intermat to present two new hydraulic breakers. The XP300 fills the gap in the compact range, and the giant XP7000 for heavy breaking in quarrying and other severe applications. The XP300, equipped with a 80mm chisel, is designed to work with 5 to 6t excavators and a range of skid-steer loaders. It has an anti blank-firing system, square-section percussion body and vibration and noise insulation for operating under the strictest urban regulations. The bigger XP7000 features the combined gas and oil working principle, blank-firing prevention system, auto-greasing pump, adjustable frequency/energy, full square-section percussion body and high back pressure. An underwater operation and tunnelling kit is optional.

Two new breakers from Sandvik With a working weight of 1220 kg and an impact rate of 490 to 780 blows per minute, the new Sandvik BR2155 breaker has been designed for carriers in the 16 to 26 t weight class. The BR2155 is a design concept incorporating retrofit options that provide users with exceptional flexibility to match the breaker to their application and material requirements. The new BR2155 encapsulates the very latest in breaker design. A slim body, robust steel housing, a replaceable wear package and an integrated lubrication system make up the new BR 2155. Customers can choose from a range of options to

match applications, material and budget. This flexibility enables users to select an appropriate specification on purchase, or to retrofit the breaker, and ensures that the breaker is always to the latest and most appropriate configuration as application requirements change. Key Retrofit options include: • • •

Safety Valve – Protects the breaker from poor or inappropriate hydraulic installation Ramlube III – An integrated lubrication device mounted inside the breaker provides optimum tool bush lubrication HD Set – Heavy-duty housing option with stone claw for demanding applications.

Issue 4 - 2009 • Oct - Nov •

PDi 29

The BR2155, being offered in sound suppressed configuration, also benefits from a lightweight design that affords the unit a class-leading power-to-weight ratio and high productivity levels in a wide variety of demolition, recycling and other industry wide applications. The proven fixed blow energy concept available in other models of breaker in the Sandvik range is also included in the new BR2155, along with the proven VIDAT tie rod system. Durability and reliability, two main features of all breakers from Sandvik, are fully integrated into the design of the new BR2155. A tool of 118 mm diameter ensures optimum wear and excellent impact performance and durability. Heavy-duty connecting hoses, supplied with the breaker, ensure reliability, while the safety valve provides protection for the breaker against hydraulic overflow and the Ramlube III integrated lubrication system ensures tool bush lubrication. Model Impact Rate (bpm): Operating Pressure (bar): Max. Tool Diameter (mm): Carrier Weight Class (t): Hammer Work. Weight (kg):

BR2155 490-780 140 to160 118 16 to 26 1,220

The other new addition to the range of hydraulic breakers on offer from the Breakers Lahti division of Sandvik Mining and Construction is the 1,700kg BR2577 suitable for carriers in the 23 to 28 t range. With an impact rate of 450 to 750 blows per minute, the new BR2577 also features Sandvik’s Fixed Blow Energy system that ensures optimum impact energy with every blow, regardless of hydraulic flow fluctuations. A key feature of the new breaker is its flexible design that allows customers to choose from a range of options as a retrofit to match their application, material and budget. This flexibility enables customers to retrofit the hammer after purchase and ensure that the breaker is always to the latest and most appropriate configuration as application requirements change. Key Retrofit options include: • •

Safety Valve – Protects the breaker from poor or inappropriate hydraulic installation Idle Blow Protector – Protects against blank firing

PDi • Issue 4 - 2009 • Oct - Nov

• • • • •

Soft Blow Sensor – Reduces the impact power and frequency in softer conditions Ramlube – Carrier or breaker-mounted automatic greasing system Ramdata – Operating data collection Ramona – Performance and operation monitor with operator alert system Ramair – Dust suppression

The new BR2577 also benefits from a lightweight design that affords the unit a class-leading power-to-weight ratio and high productivity levels in a wide variety of demolition, recycling, quarrying and other applications. Durability and reliability, two main features of all hammers from Sandvik are integrated into the design of the new BR2577. A tool diameter of 135 mm ensures optimum wear and excellent impact performance and durability. A safety valve provides protection for the breaker against hydraulic overflow and the Ramlube lubrication system ensures tool bush lubrication. Model BR2577 Impact Rate (bpm): 450 to 750 Operating Pressure (bar): 135 to 145 Max. Tool Diameter (mm): 135 Carrier Weight Class (t): 21 to 30 Hammer Working Weight (kg): 1,700

Bobcat latest breakers In September Bobcat announced that the company’s HB880, 980 and 1180 80 Series breakers were approved for use on the new E55W wheeled and E60 crawler excavators. All the breakers can be mounted using the pin-on, Klac or Lehnhoff systems, three of the four mounting systems currently available from Bobcat. At the other end of the Bobcat excavator and breaker ranges, the smallest HB280 breaker, previously only approved for use with its integrated fixing cap on the company’s 316 micro-excavator, now has the modular fixing cap system used in the rest of the 80 series. As a result it can also be used on the new E08 and E10 micro-excavators that have superseded the 316 model. The HB880 has an operating weight of 232 kg, works with flow rates from 30-65 l/min and provides a blow rate from 755-1150 bpm for work on soft ground and a blow rate of 860-1310 bpm when working on hard ground. With an operating weight of 268 kg, the HB980 breaker

has blow rates of 855-1060 and 1170-1450 bpm, respectively, and is designed for a hydraulic flow range of 45-80 l/min. The blow rates in the 1180 model are 680-1070 bpm for soft ground and 820-1280 bpm for hard ground. This breaker has an operating weight of 386 kg and works with flow rates from 55-100 l/min. With a flow requirement of 13-23 l/min, the 65 kg HB280 breaker has blow rate of 600-1450 bpm. The 80 Series hydraulic breakers from Bobcat offer high performance, greatly reduced maintenance, and are easy to use. Designed for trenching, concrete demolition and general excavation work, the Bobcat breakers feature a frame with a cylindrical design, providing improved access to jobs in confined areas. The breakers are equipped with a special shield to protect hoses and fittings from damage. The innovative design of the breaker hydraulic system provides increased efficiency, ensuring a longer working time without risk of overheating. The breakers also incorporate an effective soundproofing system, whereby the striking assembly is held top and bottom by suspension systems that are not in contact with the outer cylindrical housing. In addition, the breakers also present a novel internal design with fewer moving parts and no tie rods. As a result, the breakers can be completely dismantled in less than five minutes, without the need for special tooling.

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New Promove breaker in operation in Italy The Italian Promove XP7000 hydraulic breaker, launched at the last Intermat, is now at work in the quarrying applications it was specifically designed for. When blasting is not a viable option a large excavator equipped with a heavy and powerful breaker can be the answer to get high productivity. The Promove XP7000 could meet these requirements as productivity in an 8-hour shift can vary from 400 to more than 2000m3 according to the hardness of the rock. An average daily production of 750m3 was achieved on 1300 kg/cm2 monolithic white limestone. The main use of this class of hydraulic hammer is primary breaking on the frontline. In addition, due to the blank firing prevention system the XP7000 can also be used for reducing oversize materials. Technical data XP7000 Service Weight, kg Tool diameter, mm Oil flow, l/min Working Pressure, bar Pressure Relief Valve, bar Number of blows, 1/min Impact energy, J Max back pressure, bar

6900 210 320/400 180/200 260 280/580 17700 25

Promove in severe conditions

World’s biggest for primary crushing The Indeco HP 18000 hydraulic breaker launched in 2008 by the Italian manufacturer Indeco is the biggest built to date. Several have been sold around the world, including one to the Marocca Group for use in a limestone quarry at Anagni in central Italy. The Indeco HP18000 is attached to a 120 t Hitachi 1200 excavator fitted with a Lenhoff quick coupler. The HP 18000 breaker coupled to the excavator does the work of two mid-sized machines and with a power of 25,000 joules reduces the size of the hardest blocks of materials without any problems. The Indeco HP 18000 is part of a range that is respected in the quarrying industry thanks to reliability and durability. The HP series has improved on the features of the previous series, which revolutionized the hydraulic breaker concept by introducing the possibility of modulating the power and the frequency of the blow in relation to the hardness of the material. In the HP series this feature has been accompanied by a new shape of the casing, which has been reinforced and now

able to ensure, along with all parts subject to wear, an even greater strength and durability.

PDi • Issue 4 - 2009 • Oct - Nov

www.indeco.it

The Italian company Promove pays particular attention to quarrying applications as models in the company’s heavy range of hydraulic breakers are used in the most severe conditions. The models XP4500 and XP3100 are often used in primary breaking, while XP3100, XP2400 and XP1700 are mostly used in secondary breaking and reducing oversize material. The blank-firing protection system is a very important feature and Promove breakers are designed to operate only when there is pressure on the tool. When an oversize block is broken,

the hammer will not receive any pressure on the tool and it will stop automatically preventing damage to the hammer. Energy per blow and frequency are at the top of the market and the host excavator and operator are protected against excessive vibration through oversized shock absorbers. Other major features and advantages include square section cylinders will fully encased tie-rods and a frequency and energy valve, which adjusts to the hardness of the rock being broken.

www.pmvpromove.it

“It ran great” Newly launched in the US, Husqvarna’s first demolition machine, the DXR 310, has already had the chance to prove itself. The robot recently demolished the foundations of two large industry kilns at a paper manufacturing company in Georgia, USA.

The US demolition contractor Bluegrass is one of the biggest in the American demolition industry. As a controlled demolition contractor for nearly 30 years, the company has extensive concrete cutting and breaking experience from a variety of industrial demolition projects. Bluegrass uses a majority of demolition machines and has a large number of robots in its fleet. For the task of refurbishing the foundation in two large industry kilns at a paper manufacturing company, they chose to work with Husqvarna’s new DXR 310. The mission involved removing lime powder build up, castable and brick lining from the 70m long kilns. The DXR 310 was lifted to the third floor of the building, where the kilns were located. The robot set to work in temperatures over 45°C inside the kilns. The robot first removed lime build up throughout the length of the kiln. After that, 8m of castable from each kiln plus the three layers of bricks at the entrances was knocked down. The robot was run round the clock in both kilns for three days. “The DXR ran great, we hade zero downtime. Every function operated like you thought it would. The only issue we had in six work shifts is that the lime dust would accumulate where the extend-a-boom had grease on it and it would give a little trouble booming back in. Other than that it was phenomenal,” says Bluegrass service manager Curt Ryals. “It’s a robust, compact machine with a lot of hitting power. I particularly like the

digital control box, with which you can troubleshoot almost anything. ” Technical facts DXR 310 • • • • • • • • • • •

Cast baseplate assures optimal weight distribution High power in relation to weight with good stability and long range Compact and low-slung construction gives optimal view and manoeuvrability Simple to service and maintain Power: 22 kW Weight: 1900 kg Range: 5.5 metres Control system: Modular, digital CAN-based PLC Support: Included in the standard version Telescopic arm: Included in the standard version Dimensions: width 780 mm, length incl. support 2000 mm, height 1030 mm

Indian mine buys Tabe breakers The second largest privately owned mining company in India, Sesa Goa Limited, has bought two Tabe BA5 360VR pedestal breakers from Tabe agent Mining Supplies Corporation. The Tabe pedestal breaker, launched 5 years ago, is specially designed for the mining sector and the ones supplied to Sesa Goa are equipped with Tabe AGB475BC hammers. Tabe aims to have a higher profile in India with its range of pedestal breakers, which includes pedestal breakers for mobile and static crushers.

www.tabe-hammers.com

Issue 4 - 2009 • Oct - Nov •

PDi 33

Atlas Copco involved in German City Tunnel

Intelligent demolition job using an Atlas Copco HB 7000 and AutoControl

Five Atlas Copco attachments are involved in the construction of the 4km long Leipzig City Tunnel that will provide a north-south link through the city. Four new stations will join the city to the surrounding countryside and the road and bus network. New stops will provide access to shopping facilities, university and places of cultural interest, as well as in the central station. Contractor Kafril GmbH based in Großzschepa, about 40km east of Leipzig, is demolishing

temporary structures, built below the Leipzig Market Square in the Bayerischer Bahnhof station and central station, for the main tunnelling operation. The company used two HB 2500 and one HB 2200 Atlas Copco breakers. About 20m below the surface of the western section more than 4,000m3 of reinforced concrete was demolished that had formed the temporary structures erected as the station’s entrance and exit for the tunnelling machine. Another two Atlas Copco CC 3300 hydraulic combi cutters were used to crush the concrete and rebar in one go. Under the Leipzig central station similar demolition work is in progress. In the Bayerischer Bahnhof station about 1,500m3 of concrete, needed to make the floor and access roads for the tunnelling machine, has also to be demolished. The new link is scheduled to open in 2012.

www.atlascopco.com

PDi • Issue 4 - 2009 • Oct - Nov

Demolition work is often associated with brute force. It not only requires a fair amount of experience and a proper understanding of what has to be done, the right kind of equipment can also make the difference. Showing that demolition work is being done as a serious discipline was demonstrated by the contractor De Meuter, from Ternat, Belgium. “Nowadays, demolition contractors have to meet increasingly stringent standards,” said Aster De Meuter. “Sometimes we have to gut office buildings, which are not completely vacated and must remain operational. In such cases, noise is a major handicap. That is why we often use Atlas Copco vibro-silenced hydraulic breakers, which are proven to be the most silent product on the market.” An example where these vibro-silenced hydraulic breakers were used was the demolition of the IPM building in the Jacqmainlaan, Brussels, which had housed the old printing shop of the La Libre Belgique newspaper. The foundations for the printing presses were more than 2 m thick of heavily reinforced concrete with high rebar density. “Usually our heavy-duty Atlas Copco HB 3000, which is part of our standard machinery, should fill the bill,” says Aster De Meuter. “But the

particularly durable foundations and the location of the site in the heart of Brussels required a different approach.” After a few days, the initial progress achieved with two 4t hydraulic breakers was behind schedule and a different solution was required. The Atlas Copco HB 7000, weighing 7.7 t, seemed to be a good alternative. “With the AutoControl feature, it is exactly the breaker we needed. This had an automatic changeover of the number of blows controlling the impact energy to impact frequency ratio in such a way that the maximum performance was available at all times with a minimum of disturbance for the vicinity,” says Aster de Meuter. In solid material, the AutoControl increased the impact energy and decreased the impact frequency. As soon as the reinforced concrete gave way, the impact energy was reduced and the impact frequency was increased. This combination of impact energy and impact frequency was the decisive element, boosting demolition progress and minimizing the disturbance caused by noise, vibration and dust. After only one day, the HB 7000 demolished more than the two smaller breakers did in one week.

www.atlascopco.com

Norton-Nimbus Director Yann Maincion answers questions about:

O’Tiping from Norton-Nimbus What does O’Tip means and what is its concept? O’Tip is a steel ring pre-mounted with segments that can be quickly brazed on core drilling tubes. The concept is to eliminate all the waste and inconvenience of conventional re-tipping. What are the main cost savings? Obviously the mounting time. O’Tipping is three to four times faster than manually brazing segments, and even more with larger diameters. You no longer need to cut tubes as an O’Tip can easily be unbrazed, which will more than double its life. Are there any quality benefits to O’Tip? Segments are automatically attached to the steel ring in graphite moulds, ensuring perfect vertical alignment and spacing of the segments, which is very difficult when using magnets in manual brazing. O’Tip uses a new high temperature patented process which provides torque resistance close to laser welding. The steel ring cross section is “L” shaped, brazing on both the top and the side of the tube. This multiplies the contact surface between tube and O’Tip by three making it impossible for it to become loose whilst drilling. The O’Tip steel ring also provides reinforcement to the tube. Any other benefits? Because contractors can O’Tip in their depot within a few minutes, they don’t need to hold extensive stock. Instead of 10 bits, now all they need is 1 tube and 10 O’Tips. Contractors will reduce their storage space by 10 and their inventory value by 40%. Large stocks are always a safety hazard and require time to deliver, handling and control. Loading vans for the day will be quicker, easier and more room will be left for the rest of the equipment. Is there a quick turn around? Used tubes can be made immediately available as new bits, instead of having to wait for them to be collected by a third party company, who manually re-tip them and return them at a later date. You can virtually

no longer be out of stock if you use O’Tip.

it enough flexibility to be adapted to tubes in various diameters.

This could be considered an environmental friendly innovation? Absolutely, by avoiding tubes going back and forth between contractors and third party retippers, the result will be huge savings in transport costs and energy consumption. A 500mm diameter tube, 1m in length costs more to transport for re-tipping than the segments being brazed on it.

Are you planning to train end users? Special training sessions can be organized in our plants and on site with customers using demonstration vans. A training video is also being developed. This is clearly an industry revolution, but we’re convinced that current re-tippers will have no issue becoming O’Tippers.

What in your opinion is the main advantage of O’tip? Without doubt the ability to O’Tip directly on construction sites. Without removing the drill from the motor, operators can un-braze the worn out O’Tip, clean the tube and braze a new O’Tip, ready to drill again within 5 minutes. Imagine the old days, walking up several floors in a new building without a lift, carrying 5 bits to complete your job. Now all you need is one tube, 5 O’Tips and a small brazing device, which all fits in a toolbox.

Are there any restrictions in sizes? We have started with the most popular sizes but we plan to produce all diameters. There is virtually no limitation in the diameters that can be O’Tipped.

Do you need specific equipment? Contrary to conventional re-tipping, no special tube cutting equipment is required. The worn O’Tip can be removed in the same way as you braze it on. A standard torch brazing device, used in plumbing, is sufficient. Norton can also supply a small brazing device to take on construction sites.

Where will this be manufactured and when will you introduce it? O’Tip is patented by Norton for both its concept and manufacturing process, even the name is protected. It will be manufactured in our plants in Luxembourg and the UK, which have the specific production equipment required. The commercial launch will be at Bauma 2010. In the meantime we’ll demonstrate it to our key customers in the main European countries and quickly expand it to all countries and regions.

What is the actual process of O’Tiping? Very simple. You position the O’Tip on the tube, heat a 10cm section and apply the brazing rod through the special holes. By capillarity effect, the brazing will spread across the section. The cut in the steel ring gives

Issue 4 - 2009 • Oct - Nov •

PDi 35

What has happened within the Hydrodemolition industry during the last 12 months? In terms of new development the last year has resulted in more product development then ever before. Hydrodemolition is a method of using very high-pressure water to remove deteriorated and damaged concrete. The technique was developed in Sweden during the 1970s and is now an accepted method for repairs to concrete.

Perfect for new bonding The biggest advantage with hydrodemolition is that the high-pressure water only removes damaged concrete leaving a rough concrete surface for bonding new concrete. Mechanical demolition methods like jack hammers and rotating milling heads cannot compete with hydrodemolition. Compared to mechanical methods that create micro cracks in the concrete, hydrodemolition is the perfect solution for efficient concrete removal. So far the only thing that limits hydrodemolition is the fact that water is involved and the technique is so far limited to areas where the water doesn’t do any harm to the surfaces prepared. It is rare to find traditional demolition contractors using hydrodemolition as a technique. It is more specialist concrete repair contractors, working with bridges, dams,

docks, quays, power stations, parking houses and concrete road repairs that have found hydrodemolition the perfect way for quick and efficient concrete repair.

The machinery Hydrodemolition is carried out with self-propelled electric or diesel powered remote controlled hydrodemolition robots or special frames that can be attached to a concrete surface with a special water jetting nozzle moving on tracks or a frame attached to a carrier, like a telehandler or an excavator. There are also special frames to use for renovating concrete pillars and other circular or uneven surfaces and are often tailor made for these special tasks. Hydrodemolition can also be used using hand held lances on lighter demolition jobs. Sweden is still the technological hub for hydrodemolition equipment with manufacturers like Conjet AB and Aquajet Systems AB, which are considered the biggest and leading manufacturers in this field.

The global market The size of international hydrodemolition market for contractors and manufactures is difficult to assess. As it is a narrow segment manufacturers are quite reluctant to release market sensitive information. But a rough estimation is that each of the European countries has a handful of contractors offering hydrodemolition services. The US market is the biggest and most of the players are organised and can be found in various directories such as the one from the Water Jet Technology Association (wjta.org). Hydrodemolition is also a growing service in the Middle East and parts of Asia like Japan. None of the manufacturers of hydrodemolition equipment make their own pumps but buy them from

The new Conjet Robot 324 was displayed at the SAIE show in Bologna, Italy.

specialist pump manufacturers like Hammelmann and WOMA. The pumps are often built in to special Power Pack containers equipped for hydrodemolition purposes. But the actual machines for hydrodemolition jobs are developed and manufactured by the hydrodemolition producers. It is also common for contractors to tailor-make their own equipment.

Two dominant manufacturers Although Conjet and Aquajet Systems are the two main manufacturers there have been few new developments until just recently. Aquajet Systems in Holsbybrunn in the south of Sweden announced a number of new products, which were introduced at a press meeting in Stockholm at the beginning of the year. A number of new developments have been incorporated which can be summarised in the Equal Distance System, Intelligent Sensing Control, Graphic Colour Display and the new and large hydrodemolition robot MAX Hybrid as well as the new environmentally friendly power pack ECOSILENCE. Conjet and Aquajet Systems operate differently. Conjet have had the widest range of machines while Aquajet Systems has focused on a few base models that can be equipped with a number of attachments. But this situation is slowly changing with increasing number of attachments from Conjet and additional standard models from Aquajet Systems and even more attachments.

The Conjet range and new products Conjet currently has four base models, which are the Robot 324 replacing the 322, Robot 364 STD, Robot 365 MPA and the diesel driven unit Robot 432 D. Conjet also manufacturers a number of jetframes. Since Conjet Robot 322 was introduced in 1999 it has become Conjet’s best selling robot and it has gradually been improved. Now some significant improvements have been made and the machine renamed Robot 324. The new features include:

34 36

Lars-Göran Nilsson, Executives Vice President Sales & Marketing Sales Manager and part owner of Conjet AB, demonstrating the new Conjet Jetframe 101 Nalta.

PDi • Issue 43 - 2009 • O Act ug - N Sept ov

The world’s smallest and lightest hydrodemolition unit, Conjet Jetframe 101 ‘Nalta’, replaces hand lances Conjet AB is extending its comprehensive range of leading hydrodemolition equipment with the launch of the latest revolutionary high-pressure water jetting Conjet ‘Nalta’ Jetframe 101. Conjet ‘Nalta’ is the world’s smallest and lightest hydrodemolition unit. It replaces the dangerous and far less productive hand lancing method of hydrodemolition, as the ‘Nalta’ operator remotely controls all functions of the Jetframe 101 a safe distance from the working area.

Flexible, verstile and safe The Conjet ‘Nalta’ Jetframe is very flexible and versatile as it mounts, climbs and operates on standard scaffold tubes, and as there are no electrical sensors it can also operate under water. All components are small, light, easy to carry and position. The cutting head weighs 14 kg, the feed beam section 6 kg and each hydraulically controlled step unit, which are fixed to each end of the feed beam and automatically climb up and down standard scaffold tubes, weigh 9 kg. The trolley mounted hydraulic control unit weighs 90kg. Safety has been paramount in the design of the Conjet ‘Nalta’, which is a colloquial expression from Vilhelmina in Lappland in northern Sweden meaning something very small. ‘Nalta’ operators do not need the ‘spaceman type’ bulky and heavy protective clothing that is vital when using awkward and cumbersome hand held lances. Conjet ‘Nalta’ will eliminate the accidents that can occur with the hazardous hand lancing operations and has already proved to be considerably more productive in pre-launch contract trials. “We are replacing the dangerous hand held lancing operations and making them safer with our new and revolutionary ‘Nalta’ Jetframe,” says Conjet vice president Lars-Göran Nilsson. “Contractors that have so far used the ‘Nalta’ during on site contract trials have been very impressed with its safety and performance. With a hand lance pump of 120 kW, generating 250N reaction force, production will be between 2 - 3 times higher than with a hand lance. Because ‘Nalta’ can withstand a greater reaction force of 600N, compared to 250N for a hand held lance, higher powered pumps can be used increasing productivity even further up to 5 – 6 times. ‘Nalta’ is also very easy and quick to set up and can work continuously, so there is far less downtime compared to hand lancing, where operators have to stop and rest every 20 minutes or so. Hydrodemolition with ‘Nalta’ is also far more controlled, uniform and accurate and selectively removes only damaged concrete. It will prove ideal for those contractors currently using water jet hand lances”

standard hand lance pump. The operator controls all movements of the ‘Nalta’ Jetframe from a hand held portable control box and can operate on flat as well as curved surfaces with a radius as small as 400 mm. The Nalta Jetframe is powered by a trolley mounted hydraulic unit that only needs to be connected to a single phase 10 A, 230 V electrical supply. Replaces hand lances Conjet ‘Nalta’ is primarily intended for the hydrodemolition of concrete, The new compact and lightweight ‘Nalta’ Jetframe complements the but is also suitable for other applications, such as cleancompany’s extensive line of Jetframes, hydrodemoliing and de-scaling of steel. A different power head with tion robots, powerpacks, accessories and custom a self driven rotor is available as an option that can built equipment to cater for all possible hydrodemolibe used for numerous surface preparation tasks. For tion projects. The Conjet ‘Nalta’ Jetframe 101, the example, the ‘Nalta’ Jetframe 101 can achieve HB 2 smallest in the leading Swedish company’s range, ? grade cleaning on steel surfaces when operating at has been specifically designed to replace hand lances pressures exceeding 2,500 bar. for a large number of hydrodemolition applications, The ‘Nalta’ Jetframe system consists of a feed as the new equipment considerably increases productivity and dramatically improves safety for Jetframe 101 Nalta in opera- beam with an oscillating cassette, hydraulic unit and a remote control box. The oscillating lance, fixed to operators. A number of innovations, protected by tion in Stockholm. the cassette, travels along the 1.1 m long feed beam, international patents, have been incorporated into which can also be extended with two extra sections to a maximum length the ‘Nalta’ Jetframe 101, which can be quickly and easily integrated for of 3.3 m. The angle of attack of the lance changes direction when it hits the use on standard scaffolding tubes. manually set turning points at each end of the feed beam. This eliminates The ‘Nalta’ Jetframe is supplied with high-pressure water from a

The new Aquacutter Evolution operating on a dam renovation project in Sweden. Picture showing vertical removal up to 10 m in reach.

the need for electric sensors, enabling the unit to be used underwater. Due to the innovative patent protection only one set of hydraulic hoses is required for controlling all functions of the ‘Nalta’ Jetframe 101, including oscillating lance angle and cassette movements. The feed beam is attached at each end to a patented hydraulically controlled step climbing unit. The two step units fix onto and automatically climb up and down standard scaffold tubes after each traversing pass of the cradle and lance. The step units can also operate on scaffold tubes bent to a minimum radius of 400 mm, making the versatile ‘Nalta’ Jetframe ideal for working on curved as well as flat surfaces.

www.conjet.com

Issue 4 - 2009 • Oct - Nov •

PDi 37

• A completely new front with oscillating cassette and feed beam. • The feed mean is normally mounted in the centre of the arm, • • • •

but can be offset 470 mm to each side, which increases the reach on mainly vertical surfaces. The angle of attack can be set to ±45°, which for instance will improve the reach into corners. Additionally the robot can be programmed to follow the corner. The front end has a more compact design so that it can be used in tighter areas. Upgraded control system with absolute position sensors. Optional mast mainly for extended reach below the robot.

Conjet Jetframes Until recently Conjet had two standard types of frame systems, Jetframe 102 and Jetframe 122. But at the recent SAIE show in Bologna, Italy the new Jeframe 101 ‘Nalta’ (see article on page ) was introduced equipped with several new characteristics. Conjet ‘Nalta’ is the world’s smallest and lightest hydrodemolition unit. It replaces the dangerous and far less productive hand lancing method of hydrodemolition, as the ‘Nalta’ operator remotely controls all functions of the Jetframe 101 a safe distance from the working area. Conjet has also upgraded its range of Power Packs. The company has also recently built a new assembly plant and storage at their premises in Haninge outside Stockholm. Conjet had a turn over of nearly EUR 2.7 M.

The Aquajet System range and novelties

Pictures above showing the new Conjet Robot 365 with a mast, which radically improves the access.

•

A completely new front with oscillating cassette and feed beam The arm is normally mounted on the centre of the feed beam, but on this version can be mounted with 300 mm offset on both sides, which increases the reach on mainly vertical surfaces including below the robot. The angle of attack can be set to ±45°, which will improve the reach into corners. The front end has a more compact design so that it can be used in tighter areas. The feed beam can be tilted from -10° to 90°, which means that the robot can perform hydrodemolition in front. Absolute position sensors that will provide the position of the cradle from the reference point, as well as the angle of the lance in degrees. An upgraded control system, which can store some parameters for future use and reference. Sensors in the tracks that monitor and control the step length that will enable the robot to automatically travel straight. A new tower attachment will be introduced to enable the robot to perform hydrodemolition on vertical surfaces while standing still. The attachment kits for small round tunnels will be available for the Conjet Robot 324.

New Conjet Robot 365MPA Most owners of a Conjet 360-series robot with Multi Purpose Arm consider it to be the best hydrodemolition Robot in the market. The reach and flexibility of the arm with short set up time is highly appreciated. The 364 version was only introduced two years ago with hydraulically extendable drive wheels, adjustable height of steering wheels as well as new slew drives in the arm. With further upgrades Conjet is introducing the Robot 365MPA and improvements include

PDi • Issue 4 - 2009 • Oct - Nov

Aquajet System had a turn over of nearly EUR 2.6 M in 2008. At the press meeting earlier this year in Stockholm, Aquajet Systems President Stefan Hilmersson gave a general presentation of the company. He also explained the advantages of hydrodemolition in comparison with mechanical methods. “One hydrodemolition robot is equal to at least 10 jack hammers. Not to forget that each jackhammer is operated by one person also exposed to hazardous vibrations. This should be compared to a hydrodemolition operator standing at a safe distance from the actual operation over looking the hydrodemolition work,” he said. Aquajet Systems, like Conjet, exports more then 90% of its production. The product range contains two basic models, HD/HE and HVD/ HVE. D stands for diesel powered and E for electrically powered. The Aquajet Systems models are available in different versions as standard and Evolution. Evolution means increased technical content like a higher level of computerised control and operational functions. HD/HE can be fitted with a Robot Arm suitable for confined spaces like narrow tunnels. The HVD/ HVE models are based on a tower principle, which increases the reach radically and is perfect for large scale projects where long reach is needed. It is also suitable for pillar renovation by using a special pillar hydrodemolition option. After 18 months of development work Aquajet Systems is taking an important step further by introducing a number of improvements including the new equal distance system.

Latest version of Evolution The new Evolution concept adds a lot of new advantages to the hydrodemolition technique. For instance it is now possible to use the method according to a special geometrical pattern. Instead of demolishing an unnecessary large area the new Evolution makes it possible to remove only the concrete area that is damaged.

Aquajet Systems Jan-Åke Petersson (top) and Stefan Hilmersson (above) at the Aquajet System’s press meeting in Stockholm earlier this year. The hydrodemolition work becomes faster, more exact and more efficient. Aquajet has also developed the EDS system, which means that the distance between nozzle and the concrete stays the same even if the angle of the lance is changed. The result is better and more efficient hydrodemolition. EDS is patented and is today standard on all robots and frames from Aquajet Systems. Another new function is the Intelligent Sensing Control system, which means that all electric sensors and cables have been moved away from the front of the robot where most of the water and slurry accumulates. All electric parts have been placed in a safe location on the robot in order to minimize electric disturbance of the steering system. ISC reduces significantly all breakdowns and search for malfunctions, which increases the efficiency. Also ISC is a standard function and is patented. There is also the new graphical screen TFT that is part of the new control box Evolution Controller that was launched some time ago.

The hybrid robot from Aquajet Systems Aquajet System has also extended its range with the new hydrodemolition robot Aquacutter Max Hybrid. The model was originally tailor made for a client and can run on both diesel and electricity by just switching a button. The model is 20% larger then the standard robots in the range and can work up to 10 m vertically and above. Aquacutter Max Hybrid is also equipped with the functions EDS and ISC. During last year Aquajet Systems also launched a new type of environmentally friendly power pack named Ecosilence. The power pack contains a low emission diesel and the container is vibration and sound isolated. It lowers noise by about 50% and was developed for use in sensitive areas like inner city locations. The Swedish hydrodemolition contractor E-Schakt recently used it on a large infrastructural project in Stockholm city centre. Thanks to the new low emission diesel motor also the fuel consumption can be lower significantly during a year without loosing efficiency.

NLB Corp. in the US Besides these two manufacturers there are a few others,

To the left the two new robots, Aquacutter Evolotion and Max Hybrid. Above the new environmental friendly Power Pack Ecosilence.

The pictures above are describing how Aquajet System’s robots can be pre-set to work according to a geometric pattern.

which seem to keep a low profile. One of them is NLB Corporation in Wixom, Michigan, USA. NLB produce both hydrodemolition robots and frames. Current robot is the NLB Model 550 Concrete Buster, which is a compact, self-contained, hydrodemolition robot that can be used on walls, floors and ceilings. The unit’s compact size and unique design allow it to work in tight or low overhead clearance areas. The system utilizes a 55 HP diesel engine to power the hydrostatic steering, brake and drive systems. The NEMA 4 rated PLC control system allows the operator to control the spin jet rotation speed and traverse speed, robot movement and boom extension, retraction, and rotation. The robot can be operated up to 8m away by the integrated remote control joystick for optimum operator safety. It is capable of operating at pressures to 1400 bar and flows to 230 l/min. The overall dimensions of the vehicle are 3.9m long x 1.9m x 1.9m tall and it weights approximately 3.4t. Besides the robot the NLB Corp. also manufacturers the frames Model

400 and Model 4500. More information on NLB Corp. is available at www.nlbcorp.com.

US JetAge Another US manufacturer of hydrodemolition equipment is US JetAge. The company has no self-propelled robots, but has a wide variety of other types of hydrodemolition and water jet equipment and spare parts. More information is available on the company’s website on www.jetage.com.

PTC from Italy At the recent SAIE show in Bologna, Italy the Italian company PTC, Professional Waterjetting Equipment displayed some of their products. PTC President Giancarlo Franchini has a lot of experience with water jet and hydrodemolition equipment. The company mainly produce different types of frames and other types of hydrodemolition systems. More information about PTC can be found on www.ptcitaliana.com. Issue 4 - 2009 • Oct - Nov •

PDi 39

Above the US NLB Corp. hydrodemolition robot NLB Model 550 Concrete Buster. The 225 m long waste water channel was better built and reinforced then expected. Hydrodemolition techniques where used to remove the sides of the channel and remote controlled robots to remove the concrete channel itself.

The Italian hydrodemolition equipment manufacturer PTC’s stand at the SAIE show in Bologna.

Picture to the right showing the new Aquacutter Evolotion (left) and the Aquacutter Max Hybrid hydrodemolition robots shown at an international client meeting in Sweden earlier this year.

Demanding Hydrodemolition project at Stockholm Arlanda The Swedish hydrodemolition company Waterjet Entreprenad AB, with three branch offices in Sweden, is considered the biggest hydrodemolition contractor in Europe. The company has 55 employees and an annual turn over close to EUR 10 M. The company is possessing a large equipment park containing 25 diesel pumps for hydrodemolition, 10 remotely controlled hydrodemolition robots, 10 frame system and a number tailor made pillar robots and other types of special equipment. Waterjet work all over Scandinavia and sometimes also in other parts of Europe and has capacity to take on really big projects. They offer all kinds of hydrodemolition services like bridges, docks, quays, parking garages, dams, power plants and a number of special application as well as industrial cleaning and clearance. Some time ago Waterjet carried out a rather unusual job on the apron at Stockholm International Airport Arlanda. Here they replaced a 225 long concrete channel drainage for wastewater

and de-icing liquid. The channel had started to sink in to the apron and had to be replaced. Instead of putting in a new channel it was decided to replace it with a number of wastewater wells. The channel was cast into the foundation and some 500 mm in width and 200 mm in depth needed to be hydrodemolished as well as demolished with demolition robots. Waterjet Entreprenad had two operators on the job, Jan Axelsson and Jan Nordström and used Conjet Robot 363 STD and a Power Pack. Janne Axelsson told PDi that the job was far more complicated than expected due to the location of the channel and that it was cast in the foundation. The area that was hydrodemolished had very strong reinforcement with a so called K value between 60 to 80 K. The work was done in three steps starting in June and was finished in the end of August. “The job maybe didn’t look that complicated but the very strong reinforcement made it very time consuming. When finished

A busy job site with aircrafts taxing off and on around the hydrodemolition robot, Conjet Robot 363 STD.

Jan Axelsson (right) and Jan Nordström from Waterjet Entreprenad AB were responsible for the hydrodemolition work at Stockholm Airport Arlanda.

The sides of the concrete channel after been hydrodemolished. the area also had to be very solid in order to be able to carry heavy loads like a Boeing 747,” says Waterjet’s Jan Axelsson.

www.wjet.net

Hydrodemolition helps Costa Rican bridges make the grade

The Spanish hydrodemolition contractor Hidrodem has been using its Swedish Aquajet Systems Aqua cutter robots to remove more than 800m3 of concrete to upgrade existing bridges for a major highway project in Costa Rica. The new 77.5 km San Jose – Caldera highway will be used by more than 81,000 vehicles/day, reducing the travel time between the Central Valley and the Central Pacific Coast by at least 30 minutes. It is the country’s first public construction project to be awarded to a foreign contractor by the Consejo Nacional de Concessions, part of the Ministero de Obras Publicas y Transportes. Spain’s Autopistas del Sol will finance the project recouping its investment through toll charges over 25 years. The new highway has been divided into

40 PDi • Issue 4 - 2009 • Oct - Nov

Conjet assists in Channel Tunnel repairs Train services through the Channel Tunnel linking Britain and France, where scheduled to be fully restored in February 2009 following several months of repairs after a major fire in the tunnel on 11 September 2008. A lorry caught fire on a Shuttle train carrying heavy goods vehicles bound for France through the 50km long northern tunnel. The fire, which spread to other vehicles, raged for about 16 hours. The extreme temperatures of up to 1000ºC caused extensive damage to about 600m of the 7.6m diameter tunnel’s concrete lining, approximately 11km in from the French entrance. Conjet supplied specially modified banana shaped feedbeams, which carry the jetting nozzle, to match the curvature of the tunnel wall (right).

Removal of fire damaged concrete The Channel Tunnel operator Eurotunnel awarded the repair contract, estimated to be between EUR 50-60M, to a consortium of Freyssinet, Eurovia Travaux Ferroviaires and Vinci Energies. Freyssinet was appointed to look after the civil engineering works, while ETF would be responsible for track and overhead wire restoration and Vinci Energies responsible for other equipment. The technique of hydrodemolition, which uses highpressure water jets to remove concrete from various structures, was specified as the method to remove the fire damaged concrete. Freyssinet subcontracted the concrete removal to the specialist hydrodemolition and industrial cleaning contractor Philip Lasserat. For the hydrodemolition part of the repair Philippe Lassarat hired four Conjet hydrodemolition Robots and pumps, together with a team of experienced operators and a project manager, from Rotterdam based Doornbos Equipment, a specialist in the rental of ultra high-pressure water jetting and vacuum equipment. To meet the tight schedule Doornbos had to work three shifts round the clock and opted to use two Conjet 364s and two Conjet 322s. Conjet supplied specially modified banana shaped feedbeams, which carry

three main sections with two incorporating existing roads and numerous bridges required upgrading to meet the new regulations and increased traffic volume. Main contractor Constructora San José Caldera SA recognised the advantages of using hydrodemolition on at least 10 bridges and appointed Hidrodem as sub contractor, using two Aquajet Systems Aqua Cutter robots. All bridge slabs will be strengthened and increased in thickness to accept the increased traffic densities. The Aquajet Cutter robots came into their own on the concrete slab improvements and reinforcement, removing more than 800 m2 of concrete to an average depth of 100 mm. On the Rio Jesus Maria Bridge Hidrodem found that the concrete slab was below the minimum standard thickness of 150 mm. Hidrodem was able to use the Aquajet robots with confidence to remove the concrete without damaging the rebar, allowing concrete to be poured to a new standard thickness of 170mm. This together with the increased rebar provided a total thickness of 220mm to meet the new standard.

The total area of removal of the fire damaged concrete with the Conjet hydrodemolition Robots was about 9,500 m2 over an approximate 600m length of tunnel, including about 350 m2 directly above the fire where the damage was most severe. the jetting nozzle, to match the curvature of the tunnel wall.

Worked around the clock in three 10 h shifts “We had to remove the damaged C45 concrete just from the walls and roof to a depth of 30mm and managed this at an average of 650m2/day,” says Doornbos project manager Uwe Clausen. “The total area was about 9,500m2 over an approximate 600m length of tunnel, including about 350m2 directly above the fire where the damage was most severe. We removed all the fire damaged concrete in 14 working days using four Robots. We had to work non-stop round the clock in three 10 hours shifts, which included an hour in and an hour out at shift change to get through all the

security.” The Robots were supported by 350kW and 400kW pumps operating at pressures up to 1000bar and flow of up to 240litres/min. After the removal of the damaged concrete Philippe Lassarat followed on repairing and replacing any fire damaged reinforcing prior to spraying on the new concrete lining. The various services and utilities were then replaced before handing the tunnel back to Eurotunnel to restart a full service of the Shuttle trains on 10 February. Eurostar, the company that operates the passenger trains running through the tunnel, anticipated services would be fully restored on 23 February.

www.conjet.com

By using a high-pressure jet of water, the Aqua Cutter robot removes concrete without causing any damage to the structure or reinforcement bars. Each robot is fed by two water pumps, rated at 550 hp and 700 hp respectively and delivering 196 - 227 l/min at a pressure of 1000 bar. According to the spokesman for Hidrodem, the key factor was the ability to meet the tight schedule on each of the bridge structures in such a short time, whilst at the same time allowing the highway to remain open.

Issue 4 - 2009 • Oct - Nov •

PDi 41

Swedish dam relies on hydrodemolition techniques during refurbishment Hydrodemolition techniques are being used for the refurbishment of Sweden’s Järpströmmen hydroelectric power station dam wall and three spillway gates using Aquajet’s Aqua Cutter robotic hydrodemolition equipment. Swedish hydrodemolition specialist E-Schakt is working on the refurbishment contract, 80 km west of Östersund, mid-Sweden; to meet increased water volumes.

Power station operator Fortum has awarded a two year contract to Skanska for the complete refurbishment of the dam. The power station was built in 1944 and has three 118 MW turbines providing 415 GWh/ year of electricity for the national grid. E-Schakt was awarded a sub-contract for the hydrodemolition removal of damaged concrete. After removal Skanska will then replace the treated areas with new concrete.

Hydrodemolition ensures rebar is not damage, minimises risk of removing good concrete, eliminates dust and crystalline silica pollution and leaves a superior bonding surface for new concrete. It is also substantially faster than mechanical removing methods and is also considerably less labour intensive. E-Schakt is using hydrodemolition equipment from Sweden’s Aquajet Systems and includes an HVD Evolution Aqua Cutter robot, an Aqua Frame for underwater operations and a PP-700 Ecosilence power pack. The concrete dam has a maximum height of 14 m and a 2.5 m wide top slab and 6 m wide base. In the first phase E-Schakt has removed a 500 mm depth of concrete from the top slab and 200mm from the dam face. During the second phase, E-Schakt will remove 5.5 m of concrete on the vertical part of the upstream side of the dam to a depth of 200 mm; including at least 1 m underwater. For this operation, the

The Aqua Frame on the inclined dam abutment. Aqua Frame robot will be positioned on the vertical upstream dam wall and secured by divers. Working with Skanska divers, E-Schakt’s operator can continue the under water hydrodemolition operation remotely from above the surface. Järpströmmen has three steel spillway gates, and each will be removed in turn to allow hydrodemolition repairs to each gate’s concrete supports. In total, 439 m3 of concrete will be removed from the three spillways and more than 162 m3 of concrete from the dam.

www.aquajet.se

Evolution robot removing a triangle part of the cracked concrete

Vertical removal.

Hydrodemolition is our passion and we are committed to being the best in the business! Overhead

Vertical

Around

Horizontal

AQUAJET SYSTEMS, thinking in systems, with 25 years experience and constant improvement together with our customers, we provide you with

PDi • Issue 4 - 2009 • Oct - Nov

a modular design in advanced Hydrodemolition that covers almost any kind of application. AQUAJET SYSTEMS stand for efficiency, profitable solutions and the latest innovations.

Visit www.aquajet.se for more information.

SAIE Down but Still Standing It is difficult for organizers of construction machinery equipment shows in these difficult times. SAIE 2009 in Italy in October was a major disappointment this year as a result of a weak market and a collision with other shows in the same business segment.

The Italian show SAIE in Bologna did not meet expectations this year. The normally vibrant exhibition was devoid of many of the major manufacturers of demolition and recycling equipment.

Show collision Just a handful of manufacturers of demolition and recycling equipment that exhibited at previous SAIE shows attended this year. The recession has hit the Italian market hard and is one of the main reasons for the decline in exhibitors at SAIE. Another reason is the rather unlucky planning of having three similar shows so close together. SAIE was held on 28-31 October and coincided with the waste management and recycling show Ecomondo in Rimini, about an hour drive from Bologna. Several of the Italian companies that used to exhibit at SAIE choose Ecomondo instead. Normally SAIE use to be organized second week of October. On

Issue 4 - 2009 â&#x20AC;˘ Oct - Nov â&#x20AC;˘

PDi 43

PDi’s Monica Colleone and Romano Ferrario (middle) together with Klindex’s Enio Bibiano.

top of that the German waste management and recycling show Entsorga was held on 27-30 October, which probably stole some of the international guests at SAIE.

Romano in the jaws of a Trevi Benne crusher.

During the four-day exhibition 166,426 visitors and 1,530 exhibitors, including 320 from abroad, attended the show. The number of visitors was a little lower than previous shows, but exhibitors were down by about 200. Among the major manufacturers Trevi Benne displayed a representative range of their heavy-duty demolition and recycling attachments, including, crushers, pulverisers, shears, sorting grabs and crushing buckets. Rotair displayed their of hydraulic breakers and dumpers for easy loading at the demolition sites. Tower Light was showing their line of light towers as the company decided to display their line of dust suppression canons

Positive comments

New dust extractors from Klindex. at Ecomondo instead. The Italian company Pressoil, specialising in hydraulic and remote control systems, showed a new brand of remotely controlled demolition robots. The company tailor make remotely controlled equipment for any company or mini excavator manufacturer. The machine on show was originally a Bobcat converted to a demolition robot without any cabin. Pressoil received a lot of enquiries about this product. The company says that mini excavators are becoming more and more common in demolition applications and with a remote control as an option the use can be extended. Pressoil is also installing remote control systems on heavy duty and long reach demolition excavators. The Italian company Klindex displayed some of its floor grinding and polishing equipment. Klindex has a wide range of equipment and also manufacturers industrial cleaning machines, industrial vacuums and tools. Klindex has recently launched a new system for polishing concrete floors called Super Concrete Floor System, a new concrete floor grinder named Hercules 530 with 500 mm grinding width, the large scale grinder Expander 1000 with 1m grinding width and the new dust extractor Supervak KY100 and Supervak KY76 Bag. A number of new grinding and polishing tools have also been released during the year. Klindex has a very comprehensive range of concrete floor polishing equipment and the company says that there is considerable interest in these products, especially in the US where they are sold through its own subsidiary. No far from Klindex was another distributor of floor grinding equipment, SK Professional promoting Blastrac Diamatic and Pullman Ermator. Other companies that always exhibit at SAIE are the hydrodemolition manufacturers Conjet, Aquajet and The new Robot 324 from Conjet.

PDi • Issue 4 - 2009 • Oct - Nov

WALLSAWING-SYSTEMS THE RIGHT PRODUCT FOR EACH APPLICATION Machine and diamond tools one-stop Electric and hydraulic versions Modular system components

A Company within the SWAROVSKI Group

PTS Waterjet. A special feature about hydrodemolition equipment is on pages 36-42 in this issue of PDi. The Italian distributor Ariko, which specialises in distributing demolition, recycling and excavating tools, also had a wide of attachments on show, as did the Irish manufacturer Dromone.

Satisfied exhibitors

Crushing bucket from Trevi Benne.

Crushing bucket from Simex.

Account Manager Patrick Briody from Irish manufacturer Dromone.

Most exhibitors were satisfied with the show even though it was quieter than previous SAIE exhibitions. “Even in this critical time for the market, there was great attention and interest in new technologies for the innovative use of energy,” Remote controlled demolition excvasays Mitsubishi Electric Fotovoltor from Bobcat with support from taico division manager Gualtiero Pressoil. Seva. “We made many contacts in this field, showing that the integration of architecture and technologies to achieve energy efficiency is becoming increasingly important in the building industry.” “I am totally satisfied,” adds Nicola De Carlo of De Carlo Infissi. “Because I believe that SAIE is the main reference point for building thanks to the materials and technologies presented and to the way frames are considered an integral part of the process. In my opinion, our company was successfully put in touch with the industry in which we operate.” “I am also satisfied by the results of SAIE 2009,” says Gruppo Saint Gobain Italia president Gianni Scotti. “I believe in Pillar robot from Aquajet Systems. this exhibition so much that we have a stand at both SAIEnergia and at SAIE. It is an absolute reference point, offering a complete and innovative approach to building and energy efficiency, even in sectors like glass walls, which have been missing from trade exhibitions for some time.”

Breakers in the Rotair booth at SAIE.

PDi • Issue 4 - 2009 • Oct - Nov

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A New Powerful Drilling Solution Husqvarna’s new strong DM 340 drill motor mounted on a DS 450 stand is a complete drilling system easy to set up, operate and transport. The DM 340 is the most powerful electric drill motor in Husqvarna’s range. It has an ergonomically designed handle, making it easier to transport and faster to set up. The controls are designed and positioned to enhance its ergonomics and facilitate operation and only weighs 14 kg. Its technical features include Softstart, which assures a smooth start, and Smartstart, which makes it easier to initiate drilling. The Elgard function significantly increases its operating life by protecting the motor from overload. The LED indicators show the machine load and help the operator drill with maximum efficiency at all times. The gearbox is water-cooled for reduced wear and the three speeds make it easy to set the optimum drilling speed. The DM 340 can be used for drill bits with diameters from 50 to 400 mm. The DS 450 is a rugged, lightweight stand that can be angled, and has been designed specifically for this drill motor. The two-speed carriage allows the selecting of the speed to maximise the drilling performance. The stand is available in two variants with a long or short column. Stand accessories such as wheels and vacuum plate are available to facilitate transport and mounting. “The DM 340 with the newly developed DS 450 stand offers a really efficient and powerful drilling solution. The system is extremely easy to assemble and handle and saves time for users before and during work,” says Husqvarna Construction Products construction equipment product manager Lars Gustafsson.

www.husqvarnacp.com

The DS 450 is available with a long or short column.

Wheels and vacuum plate facilitate transport and mounting.

PDi • Issue 4 - 2009 • Oct - Nov

Technical data for the Husqvarna DM 340 • Water-cooled three-speed gearbox for optimal drilling performance • Equipped with SoftstartTM, SmartstartTM and ElgardTM as well as an LED overload indicator • Water hose can be turned 180 degrees • Power: 3300 W • Drill-bit diameter, max: 400 mm • Weight: 14 kg

Technical data for the Husqvarna DS 450 • Drill-bit diameter: max. 450 mm • Travel length: short = 635 mm, long = 1635 mm • Weight: short = 23 kg, long = 30 kg • Eight control wheels for correct placement of the carriage and stable drilling

Powerful, user-friendly and efficient. Husqvarna’s new strong DM 340 drill motor mounted on a DS 450 stand is a complete drilling system developed with maximum user focus.

New Hydraulic Clamp Range for Bobcat Mini Excavators Bobcat has launched a new family of dipper stick mounted hydraulic clamp attachments for the company’s range of 1 to 6 t mini-excavators. Exclusive to Bobcat, the new hydraulic clamps are available in long and short versions to fit Bobcat buckets mounted on excavators with Pin-on, Klac or Lehnhoff attachment systems. The clamps are designed for any application involving picking and placing of objects with Bobcat mini-excavators. When used with a trenching bucket, the hydraulic clamp functions like a human thumb, allowing the operator to grasp, lift and place broken concrete and asphalt, tree stumps, stone blocks and other objects. Hydraulic clamps provide operational advantages in demolition and road repair for picking up debris and loading into waiting trucks and trailers. They are also useful in landscape construction for clean up operations or the placement of boulders and stones. Available in a wide range of sizes with operating weights from 27 to 115 kg, the new clamp attachments are

painted orange to improve visibility when in use. The clamps do not need to be dismounted, and coupled with increased versatility and utilisation, ensures they are an added value attachment particularly for the rental industry. The hydraulic clamps are supplied in kit form and comprise a grapple for clamping, a hydraulic cylinder, hoses and pins required to install the clamp on the excavator.

lift height. It can be specified with a compact Loadall or skid steer Quickhitch, to cater for a vast range of compatible attachments. The JCB Miniscopic is ideally suited to applications where the working area is restricted and can access areas traditional alternatives cannot, including the ability to operate inside buildings and containers or to be lifted above ground level for work in highrise structures.

JCB launches smallest compact Loadall

Oscillation breakthrough quadruples dust suppression area

JCB has launched its smallest compact Loadall telescopic handler the 515-40 Miniscopic, which is just 1.8m high, 2.97m long and weighs less than 3.5 t. It features a patented offset, single-spine chassis with the machine’s cab occupying the resulting space. The Miniscopic has been designed for manoeuvrability in the restricted spaces and difficult ground conditions and features 4-wheel drive, 4-wheel steering and a hydrostatic transmission. Powered by a 50hp Deutz engine, the JCB model can handle a 1.5t payload at a 4m

One of the world leaders in dust suppression equipment, Dust Control Technology, has introduced a 180° oscillation option on its two largest designs and quadrupling the coverage area of each machine. DCT is now able to deliver effective particle control over more than 7,400m2 from a single location with its flagship model, the DustBoss DB-60. “These new options mean that customers can suppress dust and odour particles over a far greater area without having to move the equipment,” said DCT president Edwin Peterson. “That contributes to even greater payback, either by reducing the

www.bobcat.com

PDi • Issue 4 - 2009 • Oct - Nov

www.jcb.com

number of machines needed for a given job or avoiding the need to relocate the DustBoss to cover additional areas.” When equipped with the expanded oscillation option, the revised designs require that engineers change to a centre water feed to accommodate the increased range of motion. They also install a larger motor on the DB-60 or DustBoss DB-45, to handle the additional work. The machines will have four different settings, and users can select from 45°, 90°, 135° or 180° options to suit the specific job requirements on any given day. The DB-60 has 30 special nozzles to atomize water into droplets of 50-200 microns at nearly 850m3/min and throw of more than 60 m. The portable, carriage-mounted has an adjustable throw angle from 0-50° elevation. An optional booster pump increases water pressure in the DB-60 for outstanding particle suppression. The oscillating DB-45 can deliver a virtual dust barrier that covers more than 3,700m2. With its 11.2 Kw fan, the DB-45 generates and airflow of 510m3/min to maximize coverage and particle capture. Like the more powerful DB-60, the design also features adjustable elevation from 0-50°.

www.dustboss.com

Grand scale wire sawing in Vienna The hall of the listed railway station West in Austria’s capital Vienna is to be refurbished and extended at both sides with two new multi-storey buildings and a new subterranean level underneath the extended complex. Completion of Austria’s first Bahnhof City is scheduled for autumn 2011 providing traffic links, shopping centre, offices and a hotel. 52

To reach that goal, the former railway station was closed in September 2008 to make a start on the comprehensive extension. EDT Eurodima was constantly on site providing continuous support for the concrete specialist consortium Dimas Betonbohr- u. -sägedienst Ges.m.b.H. and GWA Michalko GmbH, two of the biggest Austrian concrete drilling and cutting contractors. As the station hall is a listed building, the contractors had to stick to the special building regulations set by the state office for historical monuments Bundesdenkmalamt.

Double shifts Dimas/GWA removed about 1,300 m3 of concrete by wire sawing and carried out about 1,500 m of core drilling for wire sawing preparation. The main demolition was done within a 4 month period and with a tight programme Dimas/GWA often worked night and weekend shifts.

Wire sawing most efficient The most intensive task was the wire sawing, which was done with EDT Eurodima wire saws. The concrete blocks that had to be removed from the existing building could be cut with wire saws being the most efficient method for this project. The wire saws do not have to be reset and refitted as often as wall saws. With wire saws, all cuts, be they horizontal, vertical, floor, ceiling, mitre, diagonal or flush, can be done with smallest amount of positioning and operating work, using the appropriate guidance systems. The EDT Eurodima electro-pneumatic drive provides low weight and connecting loads, highest electric efficiency, low-noise and smooth operation as well as low tool wear. The wire saw power unit provides high operational safety for operatives. And in addition the wire is guided through tubes. In this project, four EDT Eurodima wire saws WB12S with drive units WB12SMS and 500 m

PDi • Issue 4 - 2009 • Oct - Nov

diamond wire, type DS40FBLUE, were used. The wire quality was constantly tested, adapted and customised to the concrete characteristics by EDT Eurodima. The high-quality diamond wire is coated with flexible rubber composites to provide a comfortable cutting process.

Satisfied customer The drill bits that Dimas/GWA used were tipped with the new Duramant® segments and fixed with the space welding technique. The Duramant segments combine a sophisticated bonding technique with high-class diamonds and shape so sharpening is not necessary and users get superior tool life and faster drilling. Space welding, originating from the automotive industry, has been used for the production of concrete drilling tools for the first time and approximately 180 type DUK50 drill bits were used successfully in the Vienna project.

www.eurodima.com

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Morgan Est appoints D-Drill for live substation cable removal Safety was top of the agenda for UK based D-Drill (Master Drillers) Limited when they worked within a live substation in Liverpool. Contractor Morgan Est appointed the diamond drilling and sawing specialist to remove a high voltage reinforced concrete high level cable gantry using a Hydrostress Wiresaw. The major substation remained online, during the two day project, while the concrete sections were cut and removed from a height of 10 m. “Due to the weight and location of the gantry it was not possible to use high reach crunching excavators as this would have posed a risk to adjacent transformers and local electrical apparatus,” says D-Drill north west area manager Neil Wood. “D-Drill was appointed because of its ability to provide a highly controlled wire sawing operation, at height, with fully trained BESC operatives. The positioning also meant that all equipment and the concrete waste had to be transported through live sections of the works.”

D-Drill bites into concrete biscuit at chocolate factory

In the UK and on the fourth floor of a chocolate factory in Chester, D-Drill (Master Drillers) Limited got to work cutting out concrete sections for contractors Barry Callebaut Manufacturing UK Ltd. The job consisted of four 1850mm diameter x 275mm deep heavily reinforced concrete biscuit shaped sections, each weighing slightly more than the average chocolate treat at 1.65 t. Callebaut appointed the diamond drilling and sawing specialist because of the difficult access and control issues that are faced when dealing with food production line areas. “The team dismissed breaking out by mechanical means because of the obvious dust and debris

that would result from this method,” says D-Drill North West Area Manager, Neil Wood. “With access via a staircase plus demanding lifting capacities, a small goods hoist was also not advised. Our solution was to erect a suitable crash deck below the works area, which was then tented and bounded off to contain any water ingress below. All our equipment was hoisted to the works floor 40 m from the ground and reassembled in place. Openings into the concrete were created by ‘stitch cutting’ using a Zhorro Plunge saw then lowered down to ground level for removal.”

www.d-drill.co.uk

Facts about D-Drill D-Drill has grown year-on-year since its inception. In addition to the nine regional offices, the company also has its own engineering department which manufactures drills, blades and equipment (under White Diamond Products Ltd, an operating division.) This enables D-Drill to contain its costs, and therefore keep its charges competitive. In addition, a specialist surface preparation division called Superfloor expands the company, offering surface preparation from shotblasting and scarifying to diamond grinding and concrete polishing. Continuing with a ‘one stop shop’ service D-Drill also introduced a sub-contracting service by diversifying into demolition with the acquisition of MBC Specialist Services. MBC provides a complementary service to D-Drill’s core diamond drilling and sawing service. Through MBC, D-Drill introduced the use of Brokk remote demolition machinery, an important step-change in its already rigorous health and safety policies.

Wire sawing on O2 Dome In the UK Robore Cuts, the London based Concrete Cutting Contractor, took on a large wire sawing job on the O2 Arena site, previously known as the Milenium Dome. Three 4 x 4 m blocks had been installed, when the Dome was built to take a Television Screen. Now, with new buildings planned on the site, they needed to be removed and Robore Cuts with its wire sawing expertise was called on to do the job.

Hard going This job was never going to be easy, with 8 t of steel reinforcing in each block and flint aggregate making up the concrete. These conditions, along with the size

PDi • Issue 4 - 2009 • Oct - Nov

of the cut, made for a very challenging job.

AERO® PRO diamond wire Robore took different 20 m lengths of wire to the job, including Diaquip’s AERO® PRO sintered diamond wire. This soon proved to be the operator’s choice after some testing, due to its speed and wire life.

Project completed Robore Cuts and the client were very happy with the progress on the O2 project. Each cut took only 6 hours and the blocks were removed prior to starting construction of the new buildings.

New floor saw blades from Norton-Nimbus With a focus on increasing the speed of cut, the engineers at Norton have developed an innovative design for their new premium range of floor sawing blades for cured concrete. The new Vortex design is a combination of a differentiated segment design, innovative gullets and a wider range of bond specifications. • Concave top ensuring a quick penetration by self-sharpening.

• Shorter top section to accelerate the speed of cut by reducing the peripheral contact surface

• Inclined front section for a smoother angle of attack to improve the comfort of cut. Angles of the segment and the gullet are aligned for a more efficient evacuation of the slurries.

• 15 mm tall segments for a significantly increased life.

• Norton patented ellipsoidal gullets to reduce risk of steel cracks.

• Norton patented arrow shape gullets to

indicate the direction of rotation.

• Additional air holes to improve blade ventilation and cooling down of the segment.

• Multi-depth gullets to improve the transfer of water in a wider area throughout the cut and a more efficient evacuation of the slurries.

Dry cutting dilations joints for asphalt highways To reduce cracks in asphalt pavements, French civil engineers have used an unusual technique developed in the mid 1970s for concrete pavements. They decided to cut a dilation joint in the sub-base layer, in a similar procedure on green concrete. The sub layer is composed of mixed gravels, sand and lime, and must be cut dry. The cut is then air cleaned and filled with tar. A second layer of the same aggregate and a final layer of asphalt complete the construction of this two-lane highway. The company Travodiam was awarded the sawing operation and in addition to testing this new technique and the unknown in blade behaviour and consumption, they had also to comply with the very fast pace of construction. The new Norton-Nimbus Platinum 30 asphalt blade was used

on this job with speed of cut of 11m/min and a cost/linear m 15% below the initial guarantee. The new innovative gullet shape on the Platinum blade significantly reduces the wear to the steel core. On this dry cutting job the gullet was especially efficient in removing the slurry from the cut and keeping the core temperature down.

Issue 4 - 2009 • Oct - Nov •

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Record time demolition of famous Mumbai flyover by Atlas Copco CombiCutters In the Indian capital Mumbai the two lane Lalbaug flyover, which carries 15,000 vehicles an hour, had become very congested and had to be demolished to make way for a new 2.1km long structure. The state government allowed only 25 days for the entire demolition works and clearance of debris, but only 10 days for the basic demolition.

Contractor Simplex Infrastructure Ltd sub-contracted the demanding demolition to Matte & Associates, which opted to use its Atlas Copco silent demolition tools. The company used its two existing CC 1700 U CombiCutters and a new CC 2500 U, bought specifically for the Lalbaug project. Railings and parapets were crushed by the CC 1700

Us above the flyover and the main girders removed by the CC 2500 U. At the end of the first day almost a quarter of the entire volume of 5,000m 3 had been removed and by the sixth day the entire job had been completed, four days ahead of schedule.

www.atlascopco.com

Around-the-clock dust control in Brooklyn, New York In the US an innovative transfer station in Brooklyn, New York has been using a high-efficiency dust suppression system, creating a virtual dust blanket over the entire tipping area where around 1,300 t of construction and demolition debris is processed every day. Cooper Tank Transfer mounted the oscillating unit about 6m off the ground, to obtain maximum reach and coverage. The system has been running 24 hours a day, six days a week for over a year, delivering effective dust management to protect workers, commercial neighbours and the surrounding environment. “In our operations, huge quantities of dust can be released in just a few seconds when trucks are dumping or front loaders are transporting material,” said Cooper Tank Transfer general manager Ray Kvedaras. “We wanted to find a technique that would address the problem in the immediate area, right as it was occurring.” To accomplish that goal, the company bought a DustBoss DB-30, the smallest in a family of high-performance suppression

PDi • Issue 4 - 2009 • Oct - Nov

equipment from Dust Control Technology. The versatile unit has a ring of brass nozzles that atomize the water supply to droplets between 50 and 200 microns for maximum particle attraction. A ducted fan has an adjustable throw angle from 0-50° elevation and oscillates up to 70°. With a throw of up to 30m from ground level, it delivers coverage of more than 460m2 using just a standard garden hose. “It doesn’t soak the conveyor or debris pile the way manual spraying does,” adds Kvedaras. “Too much water can cause the screens to block up with a mucky residue, which complicates processing and increases maintenance.” Because it is compact, the DB-30 can be an effective option for indoor locations or confined spaces. The machine comes with a pre-filter with quick cam release for easy access, and it can be set up to run potable or non-potable water. Options include single phase or international motors, carriage mount for easy mobility and a dosing pump for odour control or other additives.

www.dustboss.com

Downwell Demolition brings flyover down to earth The UK demolition contractor Downwell Demolition has recently completed a six week project demolishing the Sir John Hawkins flyover in Chatham. Kent. The flyover’s demolition is part of a major redevelopment of the town centre, which includes the building of a new bus station and expansion of the Pentagon shopping centre. For decades the 130 m long concrete bridge had stood uncomfortably between Chatham’s shops and houses. The flyover consisted of eight spans and support pillars up to 6m high. Downwell Demolition initially secured the site and then removed the central span of the bridge, which ran above Chatham’s High Street. This involved the temporary closure of the main road whilst specialist machinery demolished the span and removed all concrete and steel arisings. To minimise inconvenience to local

residents and workers this part of the project was completed over a single weekend. With the central span safely demolished, and the High Street reopened, the remaining five spans and their associated supporting columns were then demolished and removed. Throughout the project, all demolition and crushing work was subject to water based dust suppression and undertaken at pre-determined times to minimise disruption to the local community. Material arisings were segregated with the concrete crushed on site and the steel rebar removed for recycling. A controlled crossing point ensured plant machinery crossing the main road did so without risk to the public.

www.downwelldemo.co.uk

Facts about Downwell Demolition Downwell Demolition is one of the UK's leading demolition and recycling specialists. The company prides itself on offering safe, cost effective solutions for all demolition undertakings including asbestos removal, crushing and screening, facade retention, internal strip outs and site remediation. The company's offices and plant yard are based in South Godstone, Surrey.

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PDi 57

Brokk brings dow Brokk 400 remotely operated demolition robots have been playing a key role assisting at one of Scandinavia’s largest demolition projects. The major Norwegian demolition contractor Veolia Miljø Entreprenør is using the Brokks at Ahus University hospital in the Norwegian capital Oslo.

The Ahus University Hospital demolition project involved the demolition of the low and high blocks, in two separate contracts worth a total of NOK 75 million. Veolia Miljø Entreprenør won both contracts and began work in autumn 2008.

Nine building to come down The low blocks consisted of six consecutive buildings from two to eight floors, covering a total of 22,000 m2 of floor area for high demolition. The taller blocks consisted of three buildings of 12-13 floors and floor area of 18,000 m2. When Veolia has finished the demolition the service and processing functions are going to be rebuilt next to the new hospital, which opened in spring 2008. “We have demolished 50,000 tonnes of material and recycled 99%. We are very pleased,” says Veolia Miljø site and project manager Rune Andersen.

Quite and most efficient The second part of the project is the demolition of the 43m tall blocks, which started in May 2009 and is scheduled for completion in January 2010. The high blocks include a total of about 16,000 t of reinforced concrete. “The high blocks are a bit more demanding since there are three continuous high buildings that have to be removed. Under the floors to be demolished are culverts, laundry and kitchen that is fully operational,” says Veolia Miljø manager Bjørn Bjelde. Work has been progressing well and the quietest and most efficient method for the high demolition is the Brokk in combination with concrete crusher and Veolia Miljø bought two new Brokk 400s for the project. It takes approximately 10-12 days for Veolia Miljø to demolish a 1500 m2 floor, including the facade, Picture below from the left: Knut Bergensen, Espen Erlien, Anders Johnsson, Urban Lindholm, bakom står Marko Leveilä.

58 PDi • Issue 4 - 2009 • Oct - Nov

The Brokk machines are working silence and effective on top of the kitchen still in operation.

wn hospital in Oslo corridor walls, elevator and stair shafts. All demolition debris are picked up with a mini loader and tipped into a chute down an elevator shaft. Counted on days, they discard about 500 tonnes of concrete masses each week. To handle the Brokk floor loading capacity and the demolition debris they have propped two floors below. “It is great to demolish with the Brokks and have three machines in operation, two Brokk 400s and one Brokk 90, which takes brick walls,” says Brokk operator Anders Johnson.

The design of the new Ahus Hospital in Oslo is very modern.

e buildning. Below the buildning you can find culverts, laundry and

Anders Johnson, a professional swedish Brokk operator who has moved to Oslo to work for Veolia Miljø

Above Bjørn Bjelde Veolia Miljø, Manager (left) and Rune Andersen, Project Manager. Below Knut Bergensen, Husqvarna Norway and Tommy Hällgren, Brokk AB.

Issue 4 - 2009 • Oct - Nov •

PDi 59

“Institute Goes The Institute of Demolition Engineers recently hosted the latest of its industry seminars; and it was a truly international affair, PDi’s Mark Anthony reports.

A chilling outlook from Peter Jones. Below Alex Albon spoke about the subject Earth Exchanges.

It’s a little over two years since Terry Quarmby, then the vicepresident of the Institute of Demolition Engineers, stood before the European Demolition Association members in Bilbao to invite them to apply for IDE membership. Membership, claimed Quarmby at the time, was the only internationally recognised accreditation and qualification open to true demolition engineers.

Growing Reputation Since then, the international response has been one of almost deafening silence. Save for a handful of memberships in the US, Australia and elsewhere in Europe, the IDE seems to have been consigned to a parochial backwater, damned for all eternity as too British for international tastes. What a difference two years and a new president and vicepresident can make. When vice president John Woodward

spoke to the EDA in Nice earlier this year, he openly admitted that the IDE had been “stupid” to expect a flood of entrants from Europe as the IDE had quite simply made things too difficult for non-English speakers and non-UK residents. Judging by the latest IDE seminar, which took place within the shadow of the UK’s world famous Houses of Parliament, Woodward’s words had been backed by action.

Growing Reputation

Although an EDA representative was forced to pull out at the last moment, approximately half of the event’s high-profile speakers had flown in from overseas to attend, a fact that underlines the Institute’s growing stature and reputation beyond UK shores. The first speaker, Peter Jones of Peter Jones Associates, was also the most chilling. Jones took the opportunity to offer his own alternative viewpoint on the issue surrounding blown foam panels containing CFC and HCFC Ozone Depleting Substances as covered by the 1987 Montreal Protocol. And it made for extremely bleak listening. According to Jones, the sheer volume of these materials present in UK commercial buildings and their potential harm to the Earth’s Ozone layer will make the refrigerator mountain problem of a few years ago look like a mere environmental molehill. In the UK, there are moves to ensure that any such panels PDi • Issue 4 - 2009 • Oct - Nov

The audience enjoyed the international falvour. removed during the demolition process are handled properly and processed through a refrigerator plant to ensure that the harmful gases contained within them are not allowed to enter the atmosphere. Jones also reported that further studies are taking place in countries across Europe. Such action is vital, Jones asserts, since he is anticipating a peak in the level of these products entering the demolition arena to be just a few short years away. An audio podcast of Peter Jones’ presentation is available at: http://tinyurl.com/ydlflru Less contentious, but no less fascinating, was a presentation by Rainer Cremer whose company, Mende Holding GmbH, specialises in the construction, maintenance and subsequent demolition of high-rise chimneys. Often working at great heights, Mende has developed a unique system of deconstruction using a “spider-mounted” mini excavator equipped with a hydraulic hammer that gradually eats away the chimney from the top down. Cremer reports that his company’s process ensures that all debris falls into the chimney, facilitating easier clean-up and recycling and ensuring that dust emissions are minimised. A video showing the operation in progress can be viewed at: http:// tinyurl.com/lxr4bt

Earth Exchange With the profitability of demolition works increasingly hinged upon the ability to sell bricks, concrete and other arisings, a presentation by Earth Exchange’s operations director Alex Albon was timely. Earth Exchange is, perhaps, best described as an online dating agency that matches the needs of construction companies with the products available from demolition companies. The primary aim of Earth Exchange (www.earthexchange. com) is to ensure that potentially valuable materials that might have been sent to landfill in the past are made readily available for reuse. “Not only are we preventing the loss of valuable materi-

s International” Dick Green talked of spiders, scorpions and snakes.

als and safeguarding landfill space, our system also uses the very latest online mapping systems to match demolition and construction companies by geographic location, minimising transport and the resulting impact on the environment,” says Albon. “Feedback from demolition companies also suggests that they welcome the opportunity to find local outlets for their waste arisings when, perhaps, they’re working a long way from their usual base and customers.” A video of Alex Albon’s presentation can be viewed at: http://tinyurl.com/yd4shp8

Bigger and Better Although given by a Dutchman and a German from two totally unconnected companies, the next two presentations could quite easily have been presented as a double act, since Ruud Schreijer of Rusch and Arne Marx of Genesis have certainly enjoyed some synergies recently. Schreijer, the man behind the creation of the world’s largest high reach demolition excavator, gave a fascinating insight into the engineering expertise required to take a 110 t Caterpillar 5110 excavator and turn it into a 220 t behemoth with an upward reach of 90 m and capable of wielding a 5 t Genesis attachment. An audio interview with Ruud Schreijer is available at: http://tinyurl.com/ydc33vy Given the 90 m giant’s use of a Genesis attachment, and the fact that Rusch and Genesis have worked together to develop an excavator specifically for decommissioning Norwegian oil rigs, it was fitting that the attachment manufacturer’s Arne Marx should be next on his feet. In a rare insight, Marx revealed that the development of a new 25 t shear for a Norwegian customer was just the tip of the iceberg, and that far larger models were already under development. Although they could be a year or more away, these new models could weigh in excess of 50 t and will require

a truly huge carrier to support them. The final presentation of the day was by Controlled Demolition’s Dick Green who maintained the international flavour by sharing his story of the explosive demolition of a power station chimney in India. Green told the audience how he and his team of Indian nationals had been forced to contend with monsoons, scorpions, spiders, poisonous snakes, bamboo scaffolding lashed together with poisonous snakes and terrorists. It was a thoroughly entertaining and appropriately international way to end the day.

www.demolitionengineers.net

The IDE President Terry Quarmby (right) and Vice President John Woodward.

Ruud Schreijer - The man who created a monster.

Issue 4 - 2009 • Oct - Nov •

PDi 61

Down and recycl For more than 40 years the Central Plant facility in California’s capital city of Sacramento was responsible for heating and cooling more than 511,000m2 of stateowned, downtown office space. However in only a month, Stockton, California based contractor W.C. Maloney demolished the 3,400m2 Central Plant and recycled 94% of the materials. Text & Photo: Erik Pisor

Initial demolition work involved the removal of the plant’s east elevation and non-load bearing curtain wall by a Link Belt 330 excavator, equipped with a bucket and thumb, and a Liebherr 934 Excavator with Genesis Shear. This work allowed the excavators access to the facility’s control room, where six large chillers were salvaged, two large boilers were demolished in place, and electrical switchgear and motors were removed.

Complex city centre demolition Because downtown streets bounded the facility, specific truck routes were required when hauling away large chillers and construction debris during the day. Additionally, to avoid traffic delays the loading and unloading of heavy construction equipment occurred at night. Working in a downtown environment also meant contractor compliance with dust control requirements, which was accomplished utilizing 18m and 24m boom lifts and a water truck. Following the removal of control room equipment, the roof, floors, walls, metal and other materials, were demolished from the middle of the building outwards, with mainly columns and the plant’s concrete foundation remaining. Responsible for the majority of this demolition was the Link Belt 330 Excavator, which demolished walls and floors, while also loading trucks with construction debris. The Liebherr 934 excavator used its shear attachment to cut and remove pieces of the roof, while a small Bobcat S300 was also utilized.

“Tight demolition” During this portion of demolition, W.C. Maloney had to cope with working very close to the new Central Plant. “The old plant was demolished very close to the new building,” said J.B. Hall, project executive for Skanska USA Building Inc., the general contractor for the Central Plant project. “We were about 1.5m away from the new plant the whole time.” To avoid damaging the new plant the veranda of the old facility was cut back leaving only the columns, some of which were nearly touching the new facility. “We had to shear the columns at their bottoms and pull them away from the new building,” said Hall.

One month demolition schedule

During concrete and foundation demolition, a Link Belt 330 excavator and a Link Belt 460 excavator equipped with hydraulic breakers were used to break up concrete. In addition a John Deere excavator with a concrete processor crushed the concrete, while removing the rebar. In total 8,000 t of concrete, 1,200 t of metal and 600 t of construction debris were demolished and taken to local recycling facilities. Demolition could only take one month and planning was key to the project’s success. “The schedule was challenging,” said Hall. “We were pre-

PDi • Issue 4 - 2009 • Oct - Nov

led in one month

planning the demolition for more than a year.” Work was carried out six days a week for 12 hours a day except on Sundays, when crews worked 10 hours due to noise restrictions. “The demolition contractor knew it was critical that we got through the demolition quickly,” said Hall.

Tight between the two buildings. One to be demolished and the other not.

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Issue 4 - 2009 • Oct - Nov •

PDi 63

The boys are back in town After an absence of eight years, the NFDC Annual Convention returned to Killarney in Southern Ireland for what felt like an overdue homecoming. PDi’s Mark Anthony reports. On paper, the latest Convention of the NFDC had all the makings of a damp squib. Following high profile events in Barcelona, Monte Carlo and Majorca, the unpredictable Irish weather held a certain foreboding. The return to Ireland was also a reminder that eight years ago the then Convention Chairman, the late Claude Brown, suffered a stroke in the run-up to the event. And, of course, the latest Convention was scheduled to take place in the midst of an economic downturn that has wreaked havoc on demolition workloads and profit margins. But the membership of the NFDC is made of sterner stuff and, unperturbed by rain, history or finance, the tickets for the 2009 Convention were snapped up in record time and set it on its way to becoming one of the most memorable in recent history.

40 Shades of Green The Hotel Europe in Killarney, part of the Liebherr Group, is not just one of the best in Ireland but one of the best in Europe, affording spectacular views across Loch Leane, the McGillycuddy Reaks beyond and the “40 shades of green” landscape immortalised in the

Hotel Europe, Killarney.

PDi • Issue 4 - 2009 • Oct - Nov

Johnny Cash song of the same name. As NFDC president David Darsey put it: “the hotel combines German efficiency with the traditional, warm, Irish welcome. Thankfully, it’s not the other way around.” The NFDC’s well-attended Half Yearly Business Meeting took place in the depths of the Hotel Europe’s Tardis-like building. As is traditional, President David Darsey welcomed delegates before covering matters arising from the previous meeting and giving his halfyearly report. With the Learning & Skills Council grant funding for industry training having been heavily and unexpectedly slashed, opening presentations on training by Construction Skills’ Martin Morrell and National Demolition Training Group president Howard Button were eagerly anticipated, and well received. However, it appears that it remains a waiting game while negotiations continue.

A full house for the Business Meeting.

View from the US Next up was Mike Taylor, chief executive of the US National Demolition Association. Having thanked delegates for the UK’s ongoing support for military action in Iraq and Afghanistan and accepting US responsibility for the global credit crunch, Taylor went on to explain that while US President Obama’s stimulus package had yet to percolate down to Stateside demolition contractors, there were growing signs of positivity. A video of Mike Taylor’s speech can be viewed at: http://tinyurl. com/kwcsrg. Second vice president William Sinclair was next to provide an update on developments at the European Demolition Association and to provide initial details of the Demolition Summit and Demolition Awards scheduled to take place in November. The event sponsors were then given an opportunity to address the delegates, starting with John Davitt of Hino/J Harris Assemblers who provided a nice mix of technical know-how with a suitably Irish smattering of humour. Davitt was followed by Sean Burden and Sean O’Hara of Liebherr Great Britain, Alan Matchett of Sandvik Mining and Construction, Norrie Erwin of Quinn Direct, and

Allen Smith and Michael Atkinson of Komatsu. Delegates were then whisked aboard a flotilla of waiting coaches, for transport to the nearby Quirkes Quarry. Here Hino, Liebherr and Sandvik Mining and Construction put on an impressive equipment display and demonstration, together with welcome refreshments. After the demonstration it was back to the hotel for the traditional Gala Dinner.

A Slice of Vegas It was one of the worst kept secrets in Ireland that entertainer Joe Longthorne was to reprise his show-stopping performance from the 2007 Convention in Monte Carlo. What no-one knew was that he would be preceded with a welcoming address by Senator Paul Coghlan, one of the most powerful and respected men in Ireland. It was then time for Joe Longthorne and his band to bring a little bit of Las Vegas to Killarney, rocking the house with a mixture of songs and impersonations spanning decades of su-

NFDC President David Darsey and his wife danced the night away. perb music. Delegates danced the night, and some of the morning, away as the Gala Dinner transformed into a Gala Breakfast with some resilient souls still partying when the sun probably came up behind the clouds. Sore heads, sore feet and a sky that was more 40 shades of grey didn’t stand in the way of delegates turning up in their droves for the penultimate event of the 2009 Convention; a tour around the picturesque Ring of Kerry culminating with lunch at the Parknasilla Hotel and a visit to the charming Muckross House Estate. A thoroughly enjoyable, entertaining and informative Convention was brought to a fitting close with an informal dinner on the Hotel Europe’s Terrace and a spectacular firework display utilising considerably more explosives than are required for even the most spectacular Las Vegas hotel implosion.

Convention Chairman goes Transatlantic

This was the Convention that so nearly wasn’t. After more than a year of negotiation and planning, and with the fastest-selling Convention in history scheduled to start just a few days later, Convention Chairman Patrick Williamson decided to take himself off for a spot of trout fishing. Williamson positioned himself on a rocky outcrop and, having fished the same spot for some 20 years, took the apparently wise precaution of standing well back from the drop into the Atlantic Ocean that lie below. But then disaster struck. According to Williamson, a freak wave came in on his blindside and, while it failed to hit him, it was forced up and between the rocks behind him, causing a wall of water to strike him in the back and dump him unceremoniously in the water. Before he knew it, he was being swept gently but perceptibly out to sea and towards America. “I tried to swim back but the weight of my clothes and the sheer force of the current just made it impossible,” says Williamson. “It really was a life flashing before your eyes moment.” It was more than a moment. Even though his fishing partner quickly raised the alarm, it was some time before the local Air Sea Rescue helicopter located him and he was plucked to safety before being rushed to hospital and treated for possible hypothermia.

“Even in August the Atlantic is extremely cold and doctors told me that people are lucky to survive for 20 minutes,” he continues. “I was in the water for around 90 minutes and I consider myself to be lucky to be alive.” In typical fashion, Williamson was soon out of bed and back on duty, ready to welcome the nearly 400 delegates that attended the Convention, most of whom had no inkling of his brush with death.

Lucky to be alive Patrick Williamson.

www.demolition-nfdc.com

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Signature Date _________ 1. What is your company´s primary business activity?  Concrete cutting  General demolition  Demolition by explosives  Highrise demolition  Hazardous materials  Landfill  Re-use of demolition waste  Recycling services  General contractor  Floor gridning  Hydrodemolition  Insurance  Safety and project planning  Architect  Engineer  Distributor/sales representative  Other, specify ________________________

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Perform None

7. Do you recommend, specify, approve or perform demolition services?  Recommend  Specify  Approve  Perform  None 8. Do you recommend, specify, approve or perform recycling services?  Recommend  Specify  Approve  Perform  None

2. What is your function?  Contractor  Architect  Engineer  Distributor/sales representative  Purchase  Estimator  Management  Operator  Other, specify ________________________ 3. Reason for inquiry?  Immediate need  Future job  General information 4. Reason for inquiry?  Immediate need  Future job  General information 5. Size of your company?  Less then 5 employees  6-20 employees  21-50 employees  51 or more employees 6. Do you recommend, specify, approve or perform concrete cutting services?  Recommend  Specify  Approve

9. Do your company plan to buy any of the following in the next 12 months? Concrete Cutting  Wire saw  Wall saw  Flat/Floor saw  Diamond chain saw  Core drill  Diamond blades/ bits or wires  Other_________________________ Demolition  Excavator/carrier for demolition  Long reach demolition boom  Compact equipment  Loading equipment  Hydraulic breaker  Concrete crusher  Pulveriser  Sorting grab  Steel shear  Other_________________________ Recycling  Mobile recycling equipment  Stationary recycling equipment  Screens  Screeders  Crushing buckets Other equipment  Floor grinding equipment  Dust extractor equipment  Wet vacuum equipment  Air cleaning equipment  Hydrodemolition equipment  Implosion appareal  Other__________________________

Issue 4 - 2009 • Oct - Nov •

PDi 65

US Demolition Association announces details on 2010 annual convention THE PEAK OF EXCELLENCE

19 â&#x20AC;&#x201C; 25 APRIL MUNICH

The National Demolition Associationâ&#x20AC;&#x2DC;s 37th Annual Convention, the largest exposition of demolition equipment and services in the world, will be held at The Mirage in Las Vegas, 20 to 23 March, 2010. Each year, the National Demolition Association convention brings together a wide cross section of professionals involved in the demolition process, including those involved in the demolition contracting, general contracting, civil engineering, recycling, and other industries. The convention includes educational programmes, entertainment, and networking opportunities for both Association members and other attendees. Exhibitors interested in more information on the convention should go to www.demolitionassociation.com.

US National Demolition Assocation elects Raymond Passeno, CIH, of Bierlien Companies as President

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bauma has half a million square meters of exhibition space. Not only is it the largest exhibition in the world. It is also a key international driving force behind innovations in the industry that gives visitors a comprehensive look at the market. Use baumaâ&#x20AC;&#x2DC;s leading international position for your success. Messe MĂźnchen GmbH Tel. (+49 89) 9 49 - 1 13 48 Fax (+49 89) 9 49 - 1 13 49 www.bauma.de

Raymond Passeno, CIH, Vice President of Bierlein Companies, Inc., Midland, MI, has been elected President of the National Demolition Association, the leading trade organization for the global demolition industry. During his tenure with the Association, Passeno has been active in nearly every committee and has served as Vice President, Secretary, and Treasurer. As President, he expressed his determination to make the newly redesigned and revitalized National Demolition Association website the major global source of demolition information. â&#x20AC;&#x153;Our website will provide the training and tools necessary for members to run safe and environmentally responsible businesses,â&#x20AC;? he said. â&#x20AC;&#x153;It will help us communicate to other industries, the government, and the public at large that implosions are only a small part of what we do. It will become a major portal for information on the demolition process, its means and methods, practitioners, safety requirements, environmental issues, benefits to society, and the engineering acumen it requires. As an industry â&#x20AC;&#x201C; through the many services we provide â&#x20AC;&#x201C; weâ&#x20AC;&#x2122;re â&#x20AC;&#x2DC;making wayâ&#x20AC;&#x2122; for the progress that accompanies the demolition process.â&#x20AC;? Passeno also noted that he is looking forward to further pursuing the Associationâ&#x20AC;&#x2122;s Strategic Plan to aid its members to be leaders in environmental stewardship, safety, education, government advocacy, and professional competency. On the education front, the Association is assisting Purdue University with the development a demolition-specific textbook to be used in its demolition specialization program, the first in the country. Other changes to the National Demolition Association Executive Committee are the election of Don Rachel of Rachel Contracting, Maple Grove, MN, as Vice President; Jeff Kroeker of Kroeker Inc./Demolition & Recycling Contractors, Fresno, CA, as Secretary; and Peter Banks of CEI Boston LLC, Norfolk, MA, as Treasurer. Drew Lammers of Cohen Brothers Inc., Springfield, OH, is Past President. The Association has appointed a number of new members to its Board of Directors. They are Morris Cephas of Cephas Contracting, Inc., Richmond, VA; David Darsey of Erith Contractors Ltd., Kent, United Kingdom; Rick Givan of Recycled Materials Company Inc., Arvada, CO; Tillio Olcese of Olcese Construction Co., Incline Village, NV; and Timothy Ramon of J.R. Ramon & Sons, Inc., San Antonio, TX.

www.demolitionassociation.com

PDi â&#x20AC;˘ Issue 4 - 2009 â&#x20AC;˘ Oct - Nov

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Dates for 16th German Demolition Conference set The very appreciated German Demolition Conference will in 2010 be arranged for the 16th time. The conference is always very well attended both by contractors and suppliers to the German demolition industry. The conference will as usual be held in Berlin and takes place 19-20 March, 2010. The General for the conference is as usual Dietrich Korth and any additional information and application can be found at www. asco-abbruch.de or on phone +49(0)30 5082906. Mr Korth can also be reach on e-mail korth@asco-abbruch.de

www.asco-abbruch.de

And the Demolition Awards winners are....... The first ever Demolition Awards dinner was a night to remember at the Hotel Okura in Amsterdam on 6 November, 2009. The number of entries submitted for a â&#x20AC;&#x2DC;first-timeâ&#x20AC;&#x2122; event was astounding, making the judging panelâ&#x20AC;&#x2122;s deliberations particularly challenging. However, during the judging meeting held in Amsterdam in early September there was little dissension concerning the determination of the winners of the various categories. Despite the fact that discussions over several of the categories were spirited, the final determinations were unanimous. Because of the number of entries received and their overall high standard, it was felt that the judges ought to be able to make subsidiary awards when two or more entries were of almost equal standard and thus were born the â&#x20AC;&#x2DC;Highly Commendedâ&#x20AC;&#x2122; awards - a total of seven of these were made in addition to the 12 main awards.

Demolition Awards - the winners at a glance Demolition Company of the Year: Safedem Highly Commended: Cantillon Ltd

Demolition Contract of the Year: Keltbray Highly Commended: Carl Bolander & Sons, McGee Group Demolition Safety Award: DH Griffin of Texas Demolition Training Award: Dorton Group Highly Commended: Cuddy Group Demolition Personality Award: Dr Dietrich Korth, ASCO GmbH Environmental & Recycling Award: Costello Demolition Explosive Demolition Award: Safedem Industrial Demolition Award: General Smontaggi Urban Demolition: Keltbray Innovation Award-Series Product: Volvo Highly Commended: Omlock Innovation Award: Rusch Special Products Highly Commended: Liebherr France SAS, Kocurek Excavators Ltd Service & Support Award: Liebherr France SAS

The event itself went off without a hitch, always pleasing for a first time event, and the attendees were to a man and woman impressed with the slickness of its organisation. The Okura Hotel provided a magnificent venue, and the professionalism of its staff greatly aided the organisation of the event. As always with a first time event, it became clear that the Award categories needs to be â&#x20AC;&#x2DC;tweakedâ&#x20AC;&#x2122; somewhat. The criteria that the judges will use to assess next yearâ&#x20AC;&#x2122;s entries will be refined and explained more clearly across all the existing categories, and a new category will be introduced that will cover demolition during civil engineering works on projects such as bridges, roads etc. The Demolition Award is organised by the European Demolition Association and D&Ri Magazine.

www.eda-demolition.com

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