SEPTEMBER 2021
Benefits of Measuring Asphalt Density in
REAL-TIME
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INDUSTRY EXCLUSIVE:
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TABLE OF CONTENTS |
SEPTEMBER 2021
COVER STORY Industry Exclusive: Roller Spec Guide Compare over 175 different asphalt rollers to help you decide which will best suit the needs of your crew. | 24
TECHNOLOGY
10 Q&A: Why Construction Companies Need to Plan Now for Influx of Infrastructure Projects While the country awaits infrastructure funding, the construction industry should start preparing their crews, equipment and technology today, before new work comes in.
PRODUCTION NOTES
JOBSITE INNOVATIONS
PRESERVATION UPDATE
14 Clark Asphalt Changes the Game in Plant Efficiency with Tech Implementations
18 Benefits of Measuring Asphalt Density in Real-Time
40 Milling Best Practices Improve the Quality of RAP
Many inefficiencies at the asphalt plant can be eliminated with the help of innovation.
Many factors will determine the quality of the recycled asphalt pavement materials being produced.
Contractors with realtime density calculations at their fingertips have the added advantage of a proven correlation to core densities as compared to other systems.
IN EVERY ISSUE 8
Editor’s Perspective
50 The Last Exit
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ASPHALT CONTRACTOR SEPTEMBER 2021
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BACK IN THE MIX
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With over a century of innovation to its credit, Blaw-Knox pavers have earned a reputation for quality, durability and performance unmatched in the industry. Today, with its new and improved highway-class designs, Blaw-Knox continues to deliver on its promise with all the performance features you’ve come to expect from an industry leader. BLAW-KNOX, THE LEGACY LIVES ON. Blaw-Knox Corporation 1280 Superior Avenue Chambersburg, PA 17201 Tel. 717-400-7900 www.blawknox.com
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DIGITAL CONNECTION www.ForConstructionPros.com/Asphalt
Report: $1 Spent on Transportation Creates $4.30 in Economic Benefit
[VIDEO] Catch Up on Hops & Highways Hops & Highways is your weekly newscast dedicated to the road building industry. Join us each week as we share the latest industry news, provide contractors with best practices and share your hard work for Build America Friday. Search: ForConstructionPros.com/Videos/ Hops-Highways
California found that upcoming spending on federal, state and local infrastructure will also generate nearly $200 billion in economic activity. Search: 21590638
Asphalt Plants Need to Prepare Now for Future Demand Ben Brock, President and CEO of BROCK, talks to Asphalt Contractor Magazine about how asphalt plant owners should work now to future-proof their production capabilities
Listen to the Backbone of America Podcast The Backbone of America Podcast is dedicated to the hard working professionals who build our roads. Tune in every other week for another conversation with these unsung heroes. Search: ForConstructionPros. com/podcasts
Search: 21577443
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CONTRACTOR LATEST INNOVATIONS FOR ASPHALT PROFESSIONALS
LATEST INNOVATIONS INNOVATIONS FOR FOR ASPHALT ASPHALT PROFESSIONALS PROFESSIONALS LATEST
ASPHALT ASPHALT
SEPTEMBER 2021 Vol. 35, No. 7
CONTRACTOR CONTRACTOR LATEST INNOVATIONS FOR ASPHALT PROFESSIONALS
LATEST INNOVATIONS FOR ASPHALT PROFESSIONALS LATEST INNOVATIONS FOR ASPHALT PROFESSIONALS
Published by AC Business Media.
Asphalt
Asphalt CONTRACTOR
CONTRACTOR
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Published and copyrighted 2021 by AC Business Media. All rights reserved. No part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopy, recording or any information storage or retrieval system, without written permission from the publisher. Asphalt Contractor (ISSN 1055-9205, USPS 0020-688): is published ten times per year: January, February, March/April, May, June/July, August, September, October, November, December, with an additional Buyer’s Guide issue published in August by AC Business Media, 201 N. Main Street, Fifth Floor, Fort Atkinson, Wisconsin 53538. Periodicals postage paid at Fort Atkinson, Wisconsin and additional entry offices. POSTMASTER: Please send change of address to ASPHALT CONTRACTOR, PO Box 3605, Northbrook, Illinois 60065-3605. Printed in the U.S.A. SUBSCRIPTION POLICY: Individual subscriptions are available without charge only in the USA. The Publisher reserves the right to reject nonqualifying subscribers. One-year subscription to nonqualifying individuals: U.S. $45.00, Canada & Mexico $65.00, and $95.00 all other countries (payable in U.S. funds, drawn on U.S. bank). Single copies available (prepaid only) $10.00 each (U.S., Canada & Mexico), $15.00 each (International).
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CONTRACTOR
EDITOR’S PERSPECTIVE
LATEST INNOVATIONS FOR ASPHALT PROFESSIONALS PROFESSIONALS LATEST LATEST INNOVATIONS INNOVATIONS FOR ASPHALT PROFESSIONALS
SEPTEMBER 2021 • Vol. 35, No. 7
ASPHALT
Jessica Lombardo, Editor-In-Chief
CONTRACTOR
jLombardo@ACBusinessMedia.com 920.542.1247
LATEST PROFESSIONALS LATEST INNOVATIONS FOR ASPHALTPROFESSIONALS LATEST INNOVATIONS FOR ASPHALT
Hopeful Days for the Road Building Industy
A
s the country awaits news from Washington where a small group of bipartisan Senators work around the clock to get a $1.2 trillion infrastructure package passed, the road building industry gathered for the National Asphalt Pavement Association (NAPA) mid-year meeting. Optimism from attendees is high and market drivers are supporting that sentiment. George Reddin, managing director at FMI Capital Advisors Inc., shared that the National Roadbuilding Confidence Index (NRCI) is the highest it's been in years. "People are highly anticipating that their will be expansion in their business in Q3 of 2021," Reddin said. "The future looks good. We may see some bumps in the road ahead of us but overall things look positive." Reddin shared that 2021 will probably be flat overall for the non-building construction industry, but that the medium term outlook is very promising, especially with the anticipation of a highway bill. While optimism is high, Reddin did share that the industry has a few hurdles to overcome.
THREE KEY DRIVERS FOR ECONOMIC GROWTH The promise of an infrastructure bill, the labor shortage and supply chain issues are the biggest factors impacting the construction industry as a whole.
Funding All eyes will continue to be on Washington for renewal of the FAST Act or other stimulus packages for infrastructure funding. The next few weeks will be critical to determining whether the Bipartisan Infrastructure Framework will become legislation that reaches the president’s desk and is signed into law. The Senate holds the cards right now, and the
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chamber will decide if significant infrastructure investments become a reality.
Labor Shortage The labor shortage continues to negatively impact the economic recovery of our nation. Over ninety percent of contractors surveyed by the U.S. Chamber of Commerce say the lack of available workers is slowing their economic growth. The Association of General Contractors also reported that the construction workforce is down 3.1% from just a year ago. And with 9 million open jobs, we are going to continue to face some real challenges in this area. "We can always find ways to make more material, but if we don't have the people to put it down, that's a problem," Reddin said.
Supply Chain Issues The global shutdowns that occurred in 2020 are still being felt. Rapidly rising materials prices was one of the leading threats to a vigorous nonresidential construction recovery. Shipping delays have created bottlenecks in the manufacturing process. Lead times have increased for parts and equipment and prices for raw materials have gone up significantly. These delays and the trickle down of the supply chain challenges are causing increased prices for producers and consumers. Still, the demand for construction services is expected to be strong during the months ahead to allow contractors to pass many of these higher costs onto the purchasers of construction services, preserving margins. The industry awaits next steps from Washington to continue the recovery of our economy and to move our industry forward.
ASPHALT CONTRACTOR SEPTEMBER 2021
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Published by AC Business Media
Asphalt CONTRACTOR
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TECHNOLOGY MATTERS |
JESSICA LOMBARDO, EDITOR-IN-CHIEF
Why Construction Companies Need to Plan Now for Influx of Infrastructure Projects
T
he good news: the industry should see more money to rebuild our crumbling infrastructure before 2021 ends. The bad news: most construction contractors are not prepared to take on more work at the level these projects are going to require. An influx of work will require more crews, more equipment and more technology to manage all of the pieces. Still, there's hope. With a little preparation now, contractors can position their businesses to be more successful in bidding and completing projects on time and within budgets. This Q&A with John Meibers, VP and general manager of Deltek + ComputerEase provides more insight.
Q
Why is it important to have a comprehensive plan for every project? What can happen if projects are not thoroughly vetted and executed?
Schedule delays and rework can be very costly. If you don’t have a plan in place, you are going to end up with delays and rework. It is important to properly vet each project especially if you are beginning a project in an area
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(i.e., type of work, geographic region, type of customer) that you may be unfamiliar with. The investments to prepare a winning bid, coordinating subcontractors and pivoting to execution are all critical in the path to a successful project lifecycle. When not properly vetted, it can set you up for compliance issues, schedule delays or cost overruns Part of the comprehensive plan is making sure all parties (contractor, architect and owner) are on the same page and working towards a common goal of a successful project. If the project is not properly executed, the project can fail in many ways including schedule delays, cost overruns and legal issues.
Q
The construction industry is notorious for not adopting technology and market intelligence. Why is this a problem?
Lacking good market intelligence and not getting involved early in project planning is the primary reason companies lose important bids. Reacting to inbound RFPs puts companies in reaction mode preventing them from putting their best foot forward
and helping to shape the project requirements. The number one problem caused by not adopting technology is poor communication. Not being able to properly communicate between the field and office leads to many inefficiencies such as poor job costing, decreased labor production, not properly coordinating material deliveries, and having the right tools and equipment onsite. Not having the right technology to deliver real-time job costing prevents you from being proactive with realtime decision-making and adjustments on the job. The time it takes for a contractor that has not yet adopted technology to execute things manually takes away from the time that could be spent on increasing their overall productivity. With today’s labor shortage, we’re also seeing the contractor who is slower to adopt technology is struggling to attract and retain a talented workforce.
Q
As more work is expected to come down the pipeline, how can technology help contractors better execute the projects they already have?
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Adobe Stock/tuiphotoengineer
For road building contractors, technology can help with equipment costing, production and billing. Technology can help in many ways – from properly tracking equipment cost and maintenance schedules, to enabling road building and infrastructure contractors to report time and daily production from the field, to making it easier for road and infrastructure contractors to execute proper billing and not disrupt their payment or cash flow – and much more. With the prospects of more projects being driven by infrastructure investments made by public sector
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agencies, technology can help contractors get ahead of planned projects and be proactive in sales and marketing efforts.
Q
How can technology help contractors get a head start on planning for future projects?
For companies doing business in the vibrant public sector market, technology can help contractors gain visibility on capital investment plans of government agencies and build marketing plans on market intelligence.
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TECHNOLOGY MATTERS
Adobe Stock/Olivier-Tuffé
Deltek can help contractors get a head start on planning by providing historical job cost reports and analysis to see which types of work typically come in under or over budget. This is critical info for the estimating team to use when bidding future projects. One of the key factors in estimating is labor production rates. With productivity tracking on current jobs, that data can be used by estimators when bidding future jobs. And tracking your win/loss rate on certain types of projects or with certain types of contractors can help you know which jobs you should be focusing your efforts on in the future.
Q
How does this technology allow contractors to automate contracts, research competitors and secure subcontractors and why is this important? The Deltek + ComputerEase solution allows contractors to solicit and track all of the bids for the various trades that they receive from their potential subcontractors including selecting the low bidders and issuing sub-contracts. With our CRM component, we can track everything from the initial pre-bid stage through bidding including the analysis of who the
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competition was on each job. For companies doing business in the public sector, Deltek’s GovWin IQ solution can help you target upcoming project needs and provide critical market intelligence to help companies improve their win rates and partner more effectively.
Q
How does technology like Deltek help contractors overcome the technology learning curve associated with trying something new?
Deltek is a global provider of enterprise software and information solutions for project-based businesses. There are currently more than 30,000 organizations – and millions of users in over 80 countries around the world rely on Deltek for project intelligence, project management and collaboration. With Deltek’s purpose-built, easy to use software and information solutions, we enable construction companies to be proactive in pursuit of new projects, digitize traditional processes and drive efficiencies in all areas of a project. Our software solutions are designed specifically for seamless integration. For a traditional industry like construction, to be able to seamlessly integrate
new software into already established processes is key for success. Deltek’s experience means we can provide a consultative approach to companies looking to begin their digital journey. We understand the challenges of adopting new technology and our goal is to eliminate the fear of new software and shorten the learning curve with a hands-on implementation and support approach.
Q
How does Deltek help contractors secure bids?
With our estimating partners, we are helping contractors not only prepare and bid on projects but provide a seamless integration from the estimate to the job setup (budget). Soliciting competitive bids from suppliers and contractors is a big part of a contractor securing their bid. With Deltek + ComputerEase, you have the ability to solicit and properly track bids and evaluate and use the low-bidder from lower tier subcontractors and suppliers.
For more information on project planning, visit ForConstructionPros. com/21521236
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PRODUCTION NOTES
CLARK ASPHALT Changes the Game in Plant Efficiency with Tech Implementations Many inefficiencies at the asphalt plant can be eliminated with the help of innovation
P
roductivity has been stuck for years in the construction industry, and a few of the main culprits include inefficient workflows, out-of-date methods and manual processes that tie up time and hamper efficiencies. Many tasks could be easily automated and further optimized; yet, inefficiencies run rampant because most businesses
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aren’t aware of the technologies that are available for leverage. However, there are those who recognize the challenges that ineffective processes cause and decide to knock them out of their daily workflows to supercharge efficiencies with new technology to help. WHO IS CLARK ASPHALT? Over 40 years ago, Clark Construction of Texas penetrated the construction space, mainly in the business of paving. Four years ago, they purchased an asphalt plant, and
that is when Clark Asphalt Products got their start supplying asphalt to the jobs that Clark Construction secured. The plant, located in New Braunfels, TX, is one of the cleanest and nicest facilities this industry has to offer. On site, Clark typically has two loader operators, one groundsman, a plant operator
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and a plant manager that hold down the fort on a day to day basis. Clark Asphalt produces around three to four hundred thousand tons of asphalt each year for the projects that they support, which is mostly projects for the city of San Antonio, a few state jobs and some subdivisions. Depending on truck rotation, they typically get about 300350 tons of asphalt loaded in a day. Their operation runs with Astec scales, so for a while they were also using Astec’s Weighmate 2000 for their loadout operation. Billy Ruff,
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operations manager at Clark Asphalt, needed a way to have some insight into what was happening at the plant while he couldn’t physically be there, so they began looking for another solution with the capability to have some visibility into his operations while he focused on other aspects of the business.
IMPROVING QUALITY AND PRODUCTIVITY WITH EASY-TO-USE SYSTEMS Clark worked with Libra to install a new overhead loadout system, which interfaces with both of their Astec scales and their production system. The implementation process took about two
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PRODUCTION NOTES
or three months before everyone was on board and comfortable in operating the system. With the loadout system, the truck pulls up and the loader operator enters the truck number in and then begins either dual loading or single loading, depending on the number of trucks on the scale at the time. “With Libra’s loadout system, we are able to easily find job orders, we can easily void or reprint a ticket in seconds – it is just as user-friendly on the technical side as it is on the loadout side," Phillip Tower, plant manager says. They also implemented Libra Web Services, which enables them to share data from anywhere with mobile connectivity. Now, the foreman on the job can receive alerts about every ticket and look at reports on a smart device without calling the plant. They can also give their customers a portal in so that they can look at the reports and see what is happening on their jobs. “I’m hardly ever in the tower, so when my general superintendent is on the road, they can understand what is going on at the plant from their mobile device while I am managing other jobs," Bill Ruff, operations manager says. "I used to get several calls about what is going on at the plant in a day – with Web Services, I hardly ever get calls anymore.”
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INFORMATION FROM ANYWHERE Another solution that Clark Asphalt has recently added to their toolkit is Libra’s Remote Access Client. With this solution, they can not only log in from the office and see what is going on at the plant, they can add customers, keep the database up to date and review and print reports. With Remote Access Client the operator doesn’t have to send reports each day, and their office manager doesn’t have to wait until the plant is finished running to the paperwork that she needs. Clark Asphalt also recently implemented thermal printers for both of their scales, which enables their truck drivers to stay in the truck after the loadout process is complete. The driver just pulls ahead, grabs his ticket from the kiosk, and gets back on the road, improving their truck flow at the plant. The thermal printers were also extremely beneficial in keeping their operations going during new regulations and special mandates that were being implemented at the start of the coronavirus pandemic. Before the printers were installed, the plant operator had to send the tickets from the tower down to the truck driver through a tube – much like the tube that is used at the bank. Now, as soon as the truck is loaded and they drive off of the scale, the next truck can start the
loadout process because the operator isn’t handling tickets. Ruff estimates that this new process saves them about an hour each day. The printers eliminate the extra touchpoints that would occur if the operator were involved in writing and handing off the tickets. Clark Asphalt’s goal is ultimately to become completely paperless, and they are well on their way. Clark Asphalt is also planning to implement the Silo Safety System, which is a completely stand-alone system featuring infrared sensors to enable each silo, if and only if, the truck is in the proper position. Two infrared sensor sets indicate when the vehicle is properly placed for loading and silo gate activation. Three sensor set configuration allows for detection of space between the cab and the trailer. As the truck pulls through to the loadout station, it will break the infrared sensor beams to enable the silo to be opened. With the Silo Safety System, they can ensure that each driver is safe from the damage that can ensue from having a literal ton of hot asphalt drop on top of them. They can also prevent costly ramifications of their trucks being damaged by these materials.
For more information on increasing plant efficiencies, visit ForConstructionPros. com/21066739
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JOBSITE INNOVATIONS |
JESSICA LOMBARDO, EDITOR-IN-CHIEF
Benefits of Measuring Asphalt Density in
REAL-TIME
Contractors with real-time density calculations at their fingertips have the added advantage of a proven correlation to core densities as compared to other systems
T
here have been many advancements in Intelligent Compaction (IC) over the past few years aimed
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at reducing the guesswork in the paving process. In fact, the Federal Highway Administration (FHWA) continues to work with many states and manufacturers to enhance IC systems that provide real-time information to the operator that’s critical to achieving target density. These factors include number of passes, mat temperature and Intelligent Compaction Measurement Value (ICMV) — each allowing operators to make informed decisions on the fly. But not all IC systems solely measure ICMV. Some systems can deliver real-time, in-place density calculations — taking ICMV a step further. Here’s a breakdown of the differences.
WHAT IS INTELLIGENT COMPACTION MEASUREMENT VALUE? Intelligent Compaction Measurement Value is a broad industry term for a measure of stiffness that’s calculated using accelerometer measurements on vibratory compactors. ICMV isn’t a measure of density itself — it’s a value used in the calculation of it. In 2014, the FHWA released a report that attempted to identify a clear correlation between ICMV calculations and in-place asphalt densities. The report found that ICMV values alone can’t reliably estimate core densities, stating, “The
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With traditional rolling efforts, some areas of the asphalt mat do not receive total coverage. Intelligent compaction (IC) was used during the construction of the Sitka Airport to ensure the entire asphalt mat received the correct amount of compaction effort. Federal Highway Administration
pass-by-pass ICMV correlate well with nuclear density gauge measurements during breakdown compaction. The final ICMV does not correlate well with core densities.” There are numerous factors cited in the lack of correlation including measurement depths, footprints and a change in drum rebounds when asphalt temperatures drop below a certain threshold. The report does, however, insist that IC systems “can be used as an enhanced tool for quality control by monitoring ICMV in real time during construction to maximize the window of opportunity for compaction.”
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According to the FHWA, the greatest strengths of using IC equipment include: • Real-time data of pass counts. There are many reasons why the real time data collected with GPS equipment is so beneficial. It almost eliminates the possibility of missing areas of the asphalt mat during rolling. This helps to achieve consistent densities. The pass count mapping is particularly useful during night paving where roller lines are difficult to see. It also works as an excellent training tool for less experienced roller operators. • Real-time data of asphalt temperature. This ensures that the temperature of the mat behind the paver is uniform. This is also critical for achieving consistent densities. • Records of all roller settings (speed, frequency, amplitude), pass counts, and temperatures. If there are any issues with achieving asphalt density, these factors can be viewed and used to identify potential issues with the rolling operation. • Ability to identify weak spots in the existing surface prior to paving by pre-mapping. This is helpful when preparing the sub base/base course layers. Alternatively, it is also a great tool if the contractor did not prepare the existing surface to be paved. HOW INTELLIGENT COMPACTION WORKS Intelligent Compaction systems feature an accelerometer-based measurement system, as well as GPS, infrared temperature sensors and an on-board computer that provides real-time compaction information to the operator. The primary features of IC systems — common among all providers — are pass mapping, surface temperature mapping and data collection. • Pass Mapping — IC systems provide real-time information to the operator, showing how many passes have been
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JOBSITE INNOVATIONS
completed and ensuring the operator can gain better uniformity across 100% of the mat. Over-compaction is equally as detrimental to quality as under-compaction, and pass mapping can help ensure the operator isn’t making too many or too few passes. • Temperature Mapping — IC systems display real-time pavement surface temperature information to the operator. This is incredibly important, as the temperature greatly impacts the material’s ability to be compacted. Armed with real-time temperature information, a skilled compactor operator will know to make adjustments to compact the asphalt at peak temperatures and avoid the need for additional passes that can drive up project costs and extend timelines.
• Data collection — The FHWA recognizes that IC data could provide significant value for quality control protocols, so one important factor is ensuring that data is collected and reported in a standard format among all manufacturers’ IC systems. While these three features are more or less standard across all IC systems, what varies significantly between systems is how the asphalt ICMV is calculated. Most IC systems offer real-time asphalt ICMV calculations; however, each manufacturer has a slightly different methodology for how it’s done. Despite the variance in calculations between manufacturers, each has the same goal in mind — to equate ICMV to density.
THE BUSINESS ADVANTAGES OF REAL-TIME DENSITY CALCULATIONS Asphalt contractors who use Intelligent Compaction are in a better position to win DOT bids and are better able to make quality control decisions on the fly. Those with real-time density calculations at their fingertips have the added advantage of a proven correlation to core densities as compared to these other systems. According to the FHWA, "IC seems like an obvious solution to ensure that the entire asphalt mat gets the correct amount of compaction effort." As the necessity for IC grows, contractors need to familiarize themselves with the technology to stay competitive. In 2017, 23
BOMAG Americas
20
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states had developed asphalt IC specifications. There were nine states at that time that developed soils IC specifications. Caltrans also developed an IC specification for cold in-place recycling (CIR). PennDOT includes roller compacted concrete in their IC specifications. The use of this technology has exploded since then. Multiple states have already adopted IC specifications and are mandating that road contractors use IC systems on certain projects. This number is only expected to grow. Road contractors who have demonstrated experience with IC systems will have a clear advantage working on DOT jobs with IC specifications. HOW TO GET REAL-TIME DENSITY VALUES This means now is the time to get these systems in places at your company. Manufacturers have been working hard to ensure contractors have the best tools at their disposal for getting accurate compaction in real-time. Volvo Compact Assist with Density Direct is an alternative method to predicting density. As with other IC systems, Density Direct offers surface temperature mapping, pass mapping and data collection capabilities via the Volvo Co-Pilot display. However, the Volvo system offers the added benefit of real-time density calculations. At the touch of a screen, the compactor operator can see the predicted density of the material being compacted, and unlike ICMV values, which are unitless, Density Direct data is expressed on a scale of percentage of air voids removed. Within the Density Direct system is a screen where the user sets up the system for a calibration test strip. After starting calibration, the system automatically plots the area for the operator to cover with four vibratory passes. These passes are used to train the system’s artificial neural network. When complete, the calibration is saved, and the Co-Pilot will display predicted density as a percentage. For best accuracy, pavement core samples
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ACON0921_18-23_Jobsite_JD.indd 21
are taken from the calibration strip (after final compaction) and tested in a laboratory. These values can then be put into the calibration to increase accuracy of the predicted density. ICMV does not require calibration, but it also does not correlate easily to density results. The user interface of Volvo Compact Assist with Density Direct depicts a density map, showing each square unit of rolled surface in a color representing predicted density. It also provides realtime numerical readings of predicted density that come from an average across the width of the drum, surface temperature and pass count displayed on one side of the screen. The user can also toggle between density mapping, surface temperature mapping and pass mapping. The pass mapping function captures each compactor pass and drum overlap with a different color so the operator can easily see gaps and work to maintain uniform coverage. Temperature mapping shows the operator the path of the compactor overlaid with the recorded surface temperature. HAMM has released HAMM HCQ as a part of their WITOS of Compaction Suite. HAMM HCQ enables the compaction progress to be monitored – in real time as well as remotely. For example, construction managers will be able to obtain comprehensive information on the progress of construction at any time without having to be on site. They will be able to control processes from the office and take decisions on the basis of qualified information. This in turn brings savings in travel time and costs and enables quality improvements to be achieved through timely interventions. The Hamm Measurement Value (HMV) is the Intelligent Compaction Measurement Value (ICMV), or stiffness index for the HAMM/Wirtgen IC equipment. The HMV values vary drastically based on roller speed, frequency and amplitude settings. HAMM also sees the potential for even greater efficiency in the optimization of machine utilization with the aid of WITOS FleetView. It
Easy to Operate
A WIRTGEN GROUP COMPANY
Learn more about the VÖGELE ErgoPlus 3 at pavingmadeeasy.com SEPTEMBER 2021 ASPHALT CONTRACTOR
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facilitates maintenance and diagnostics, speeds up response times in the event of faults and also enables systematic analysis of operating and user behavior. Finally, regular maintenance and timely, cost-optimizing replacement of wearing parts increases roller availability. At the same time, unscheduled downtimes, often involving transport costs and organizational work, are avoided. In early 2019, BOMAG introduced its BOMAP app, a
free digital solution designed to deliver an easily accessible intelligent compaction solution for both soil and asphalt projects. Now, the company has taken compaction even further down the digital road with the launch of BOMAG Connect, a substantial enhancement that enables networked control and documentation of all compaction equipment involved in the compaction process. With the help of planning data and up-to-date information from online
www.ForConstructionPros.com/Asphalt
ACON0921_18-23_Jobsite_JD.indd 23
map services, this subscription-based cloud solution makes it possible to specify all relevant core parameters for the site and plan the compaction process in detail. Respective job areas can be defined and compaction specs set according to task (number of passes or soil compaction value or material stiffness). Machines can be assigned to projects and tasks for optimal results. Roller operators, project supervisor and site managers can monitor and track all compaction values in real time. After activating an Android tablet or smartphone in a BOMAG roller, the installed free BOMAP app connects to the machine interface and registers the machine parameters. All data relevant to compaction (e.g., material stiffness or temperature) is automatically recorded and transmitted through the cloud to BOMAP Connect. Third-party machines also interconnect and can transmit their passes, helping to generate a pass map for the entire site. Within seconds, this data is combined in real time and displayed as a color-coded map. Colored areas indicate the compaction results achieved by the entire roller fleet. Operators can readily see areas that have already achieved target material densities, the current degree of compaction in a specific area and their position on the asphalt mat or soil section. As the technology behind compaction progresses, contractors will be required provide detailed, comprehensive compaction measurements. Adopt these tools now and stay ahead of the learning curve associated with compaction technology. Mark Eckert is Global Product Manager at Volvo Construction Equipment and contributed to this article.
For more information on intelligent compaction, visit ForConstructionPros. com/21098455
Easy to Control
A WIRTGEN GROUP COMPANY
Learn more about the VÖGELE ErgoPlus 3 at pavingmadeeasy.com SEPTEMBER 2021 ASPHALT CONTRACTOR
23 8/18/21 2:14 PM
Sponsored by
W
ith so many options available, purchasing a new piece of equipment that meets your needs is not an easy decision. If you’re in the market for a tandem roller however, this is your best resource. Here, we’ve complied the industry’s only Tandem Roller Spec Guide, featuring equipment specifications for nearly 175 models. For an even easier way to compare, visit the exclusive, interactive and customizable version of this spec guide at http://www.forconstructionpros.com/specguide/roller to sort and compare models based on your requirements.
HAMM/WIRTGEN GROUP HAMM compaction technology boosts paving contractor productivity and profitability. Its expanded series of DV+ rollers offers split drums for compacting tight radii with vibration front and back, or vibration-oscillation. The new HD+ 90i PH VV offers power hybrid technology, combining diesel engine for base load with hydraulic accumulator to meet peak loads, saving fuel, operating and maintenance expenditures. www.ForConstructionPros.com/10073218 Model No.
Engine HP (net)
Operating Weight (lbs.)
*specs are for front vibratory drums only. See additional oscillation drum specs on website for more detail
Drum Width (in.)
Drum Diameter (in.)
Amplitude (in.)
Frequency (vpm)
Centrifugal Force (lbs.) 2475/ 3,825
Notes
HD 8 VV
21.8
3,506
31.5
24.4
0.017 / 0.017
2880 / 3,660
vibration-vibration
HD 10 C VV
21.8
3,704
39.4
24.4
0.015 / 0.015
2888 / 3,660
2475/ 3,825
vibration-vibration
HD 10 VO
25
5,568
39.4
28.3
0.018 / 0.018
3,120 / 4,020
4.725 / 7,875
vibration-oscillation
HD 10 VV
25
5,457
39.4
28.3
0.018 / 0.018
3,120 / 4,020
4,725 / 7,875
vibration-vibration
HD 12 VO
25
6,075
47.2
28.3
0.018 / 0.018
3,120 / 4,020
5,400 / 9,000
vibration-oscillation
HD 12 VV
25
5,942
47.2
28.3
0.018 / 0.018
3,120 / 4,020
5,400 / 9,000
vibration-vibration
HD 12i VV
32.2
5,942
47.2
28.3
0.018 / 0.018
3,060/3,900
6,750/11,025
vibration-vibration
HD 13i VO
50.1
9,338
51.2
35.4
0.012 / 0.020
3,060 / 3,600
8,775 / 14,400
vibration-oscillation
HD 13i VV
50.1
9,184
51.2
35.4
0.012 / 0.020
3,060 / 3,600
8,775 / 14,400
vibration-vibration
HD 14i VO
50.1
10,000
54.3
35.4
0.012 / 0.020
3,060 / 3,600
8,775 / 14,400
vibration-oscillation
HD 14i VV
50.1
9,779
54.3
35.4
0.012 / 0.020
3,060 / 3,600
8,775 / 14,400
vibration-vibration
HD+ 70i VO
74.2
16,383
59
45
0.014 / 0.025
2,880 / 3,480
15,525 / 18,900
vibration-oscillation
HD+ 70i VV
74.2
15,832
59
45
0.014 / 0.025
2,880 / 3,480
15,525 / 18,900
vibration-vibration
HD+ 70i VV HF
74.2
15,832
59
45
0.014 / 0.025
2,700 / 4,020
16.650 / 20,700
high-frequency vibration
HD+ 80i VO
74.2
16,802
66
45
0.013 / 0.024
2,880 / 3,480
15,525 / 19,575
vibration-oscillation
HD+ 80i VV
74.2
16,626
66
45
0.013 / 0.024
2,880 / 3,480
15,525 / 19,575
vibration-vibration
HD+ 80i VV HF
74.2
16,626
66
45
0.013 / 0.024
2,700 / 4,020
17,325 / 20,700
high-frequency vibration
HD+ 80i VV-S
74.2
17,331
66
45
0.014 / 0.020
2,520 / 3,000
14,175 / 14,175
vibration with split drums
HD+ 90i VO
114
20,176
66
47
0.013 / 0.024
2,520 / 3,000
13,500 / 16,875
vibration-oscillation vibration-vibration
HD+ 90i VV
114
20,176
66
47
0.013 / 0.024
2,520 / 3,000
13,500 / 16,876
HD+ 90i VV HF
114
20,176
66
47
0.011 / 0.019
2,700 / 4,020
15,075 / 18,900
high-frequency vibration
HD+ 90i VV-S
114
21,234
66
47
0.016 / 0.024
2,520 / 3,000
17,550 / 18,900
vibration with split drums
HD+ 90i PH VV
74.2
19,955
66
47
0.013 / 0.024
2,520 / 3,000
13,500 / 16,875
vibration with hydraulic hybrid drive
HD+ 110i VO
114
21,885
66
47
0.019 / 0.032
2,520 / 3,000
22,275 / 27,000
vibration-oscillation
HD+ 110i VV
114
22,711
66
47
0.019 / 0.032
2,520 / 3,000
22,275 / 27,000
vibration-vibration
HD+ 110i VV HF
114
22,711
66
47
0.013 / 0.029
2,700 / 4,020
28,800 / 33,075
high-frequency vibration
HD+ 120i VO
154
27,596
78
55
0.014 / 0.035
2,400 / 3,000
21,375 / 38,925
vibration-oscillation
HD+ 120i VV
154
26,978
78
55
0.014 / 0.035
2,400 / 3,000
21,375 / 38,925
vibration-vibration
HD+ 120 VV HF
154
27,684
78
55
0.011 / 0.028
2,700 / 4,020
33,075 / 38,925
high-frequency vibration
HD+ 140 VO
154
28,257
84
55
0.013 / 0.034
2,400 / 3,000
21,375 / 40,500
vibration-oscillation
HD+ 140 VV
154
27,816
84
55
0.013 / 0.034
2,400 / 3,000
21,375 / 40,500
vibration-vibration
HD+ 140 VV HF
154
27,860
84
55
0.010 / 0.027
2,700 / 4,020
33,750 / 40,500
high-frequency vibration
DV+ 70i VV-S
74.2
17,166
59
45
0.017 / 0.024
2,520 / 3,000
15,075 / 15,300
vibration with split drums
DV+ 70i VO-S
74.2
17,232
59
45
0.017 / 0.024
2,520 / 3,000
15,075 / 15,300
split-drum vibration with oscillation
DV+ 90i VV-S
99.7
21,014
66
47
0.016 / 0.024
2,520 / 3,000
17,550 / 18,900
vibration with split drums
DV+ 90i VO-S
99.7
20,617
66
47
0.016 / 0.024
2,520 / 3,000
17,550 / 18,900
split-drum vibration with oscillation
24
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ail
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BUILT TO CONNECT
C
In an industry focused on manufacturing powerful equipment, our business remains decidedly human thanks to one simple belief: that our greatest achievement as a company is in mastering the art of connection. Astec helps build the infrastructure that physically connects the world, but the connections we build with people are what make us a true partner to the industry. We know the equipment we build is not our final product, because we’re not really in the business of building equipment. We’re in the business of building connections.
T ro th a T e c e
astecindustries.com
a
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Connection is at the heart of everything we do The primary use for asphalt is creating pavement for building the roads that connect goods and services to their markets, people to their communities and families to each other. Astec asphalt plants are essential to building and maintaining these vital connections. That’s what drives us to design, manufacture, and sell innovative, efficient, and reliable equipment. And that’s what inspires us to connect to our customers through knowledgeable sales, receptive engineering and responsive parts and service.
astecindustries.com/asphalt
ACON0921_24-39_RollerSpecGuide_JD.indd 27
8/18/21 2:18 PM
Sponsored by
VOLVO CONSTRUCTION EQUIPMENT Double-drum asphalt compactors from Volvo Construction Equipment offer a range of unique features that support productivity and accuracy. Compact Assist, the Volvo Intelligent Compaction System with Density Direct, provides real-time density calculations as well as pass and temperature mapping. Many models have optional 8-amplitude settings, and the DD128C offers the highest frequency (4,800 VPM) in the industry. ActiveCare Direct, Volvo’s managed telematics program, focuses on easy-to-understand case alerts rather than traditional fault codes. www.ForConstructionPros.com/10075146 Model No. DD15
Engine HP (net)
Operating Weight (lbs.)
Drum Width (in.)
16.4
3,372
35.4
22
0.015
4,000
3,500
Drum Diameter (in.)
Amplitude (in.)
Frequency (vpm)
Centrifugal Force (lbs.)
DD15 (wide drum)
16.4
3,601
39.4
22
0.016
4,000
4,000
DD25B
25
5,545
39.4
27.5
0.021
3,300 / 4,000
5,732 / 8,430
DD25B (wide drum)
25
5,776
47.2
27.5
0.0197
3,300 / 4,000
6,227 / 9,127
DD30B
49.6
6,839
49.2
29
0.015
4,000
8,005
DD35B
49.6
8,185
54.1
29
0.013
4,000
8,005
DD105
114
22,051
66.1
48
0.02 / 0.03
2,400 / 3,000
22,256 / 25,179
48
"Front Drum: 0.02 / 0.030 Rear drum: .0539"
"Front drum: 2,400 / 3,000 Rear drum: 2,340"
"Front drum: 22,256 / 25,179 Rear drum: 32,373"
DD105OSC
114
21,718
66.1
DD110C
148
24,355
67
51
0.010 / 0.025
3,800
16,240 / 41,170
DD120C
148
27,700
79
55
0.014 / 0.0349
3,000 / 4,000
30,020 / 42,070
DD120C (8 amplitude)
148
27,700
79
55
0.0149 / 0.0276
3,400
22,980 / 42,680
DD128C
148
28,430
79
55
0.0033 / 0.03
3,000 / 4,800
11,750 / 41,790
DD140C
148
30,486
84
55
0.0139 / 0.0346
4,000 / 2,700
36,680 / 41,720
DD140C (8 amplitude)
148
30,486
84
55
0.0129 / 0.0249
3,200
21,810 / 42,170
WACKER NEUSON Wacker Neuson’s newest generation of rollers includes fully recessed hydraulic motors for excellent curb and side clearance, a tapered frame and hood design provides for excellent visibility to the drum edges and increased water and fuel capacity minimizes the need to refill during the working day, increasing efficiency. www.ForConstructionPros.com/10075166 Model No.
Engine HP (net)
Operating Weight (lbs.)
Drum Width (in.)
Drum Diameter (in.)
Amplitude (in.)
Frequency (vpm)
Centrifugal Force (lbs.)
RD12A-90
20.8
2,964
35.4
22
0.043
4,200
3,400
RD18-80
19.8
3,483
31.5
24.4
0.02
3,900
5,620
RD18-100
19.8
3,681
39.5
24.4
0.02
3,900
5,620
RD24-100
24.8
5,456
39.5
28.4
0.02
4,020
10,341
RD24-100o*
24.8
5,566
39.5
28.4
--
2,340
10,341 / 9,000**
RD28-120
24.8
5,941
47.3
28.4
0.02
4,020
11,690
RD28-120o*
24.8
6,073
47.3
28.4
--
2,340
11,690 / 9,000**
RD40-130
49.3
8,741
51.2
35.5
0.02
3,600
14,400
RD40-130o*
49.3
8,851
51.2
35.5
--
2,340
14,000 / 16,200**
RD45-140
49.3
9,579
54.4
35.5
0.02
3,600
14,387
RD45-140o
49.3
9,777
54.4
35.5
--
2,340
14,000 / 16,200**
* Oscillating drum; ** Oscillation force
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Sponsored by
BOMAG AMERICAS, INC. BOMAG offers three different types of vibrator/ exciter systems – standard, TanGo oscillation and Asphalt Manager directional vibration – to meet customer needs. www.ForConstructionPros.com/10072222
TanGO Oscillation
Standard (circular excited) vibration
Model No.
Engine HP
Operating
Drum Width
Drum Diameter
(net)
Weight (lbs.)
(in.)
(in.)
Amplitude (in.)
Frequency (vpm)
Centrifugal Force (lbs.)
BW900-50
20
2,646
35.4
22
0.02
4,200
3,372
BW90AD-5
20.2
3,527
35.4
22.8
0.02
2,520 / 3,780
1,799 / 3,822
BW100ADM-5
20.2
3,638
39.4
22.8
0.016
2,520 / 3,780
1,799 / 3,822
BW100SL-5
24.8
5,181
39.4
27.6
0.02
4,320
7,640
BW120SL-5
24.8
5,511
47.2
27.6
0.02
4,320
8,993
BW100AD-5
33
5,512
39.4
27.6
0.02
3,780 / 4,020
6,744 / 7,644
BW120AD-5
33
5,953
47.2
27.6
0.02
3,780 / 4,020
8,093 / 9,217
BW135AD-5
45.1
8,488
51.2
35.4
0.02
3,000 / 3,360
8,543 / 10,791
BW138AD-5
45.1
9,370
54.3
35.4
0.02
3,000 / 3,360
10,116 / 12,814
BW141AD-5 *
74.1
15,212
59.1
43.3
0.011 / 0.028
4,200 /3,000
16,411 / 20,907
BW151AD-5 *
74.1
16,755
66.1
43.3
0.010 / 0.027
4,200 /3,000
16,411 / 20,907
BW154AD-5
74.1
18,298
66.1
43.3
0.012 / 0.024
3,300 / 2,700
14,613 / 20,008
BW161AD-5 *
114
22,046
66.1
48
0.016 / 0.032
4,020 / 3,000
25,628 / 27,427
BW190AD-5 *
114
26,566
78.3
48
0.013 / 0.036
4,200 /3,000
27,876 / 39,791
BW191AD-5 *
140.8
29,763
78.7
55.1
0.011 / 0.031
4,200 /3,000
28,102 / 39,116
BW206AD-5 *
140.8
31,085
84.1
55.1
0.011 / 0.031
4,200 /3,000
28,102 / 39,116
BW161ADO-5 *
114
21,164
66.1
48
(f) 0.016 / 0.032; (r) 0.054
(f) 4,020 / 3,000; (r) 2,400
(f) 25,628 / 27,427
BW190ADO-5 *
114
25,353
78.3
48
(f) 0.013 / 0.035; (r) 0.053
(f) 4,200 / 3,000; (r) 2,400
(f) 27,876 / 39,791
BW191ADO-5 *
140.8
28,881
78.7
55.1
(f) 0.011 / 0.031; (r) 0.056
(f) 4,200 / 3,000; (r) 2,400
(f) 28,102 / 39,116
BW206ADO-5 *
140.8
29,542
84.1
55.1
(f) 0.011 / 0.031; (r) 0.054
(f) 4,200 / 3,000; (r) 2,400
(f) 28,102 / 39,116
BW151AD-5 AM
74.3
17,417
66.1
43.3
(f) 0-0.035; (r) 0.011 / 0.027
(f) 2,700; (r) 2,700 / 2,700
(f) 0-31,923; (r) 6,744 / 16,861
Asphalt Manager
BW161AD-5 AM
127
22,487
66.1
48
(f) 0-0.036; (r) 0.017 / 0.034
(f) 2,700; (r) 2,700 / 2,700
(f) 0-34,170; (r) 11,465 / 21,806
BW191AD-5 AM
140.8
30,644
78.7
55.1
(f) 0-0.034; (r) 0.017 / 0.037
(f) 2,700; (r) 2,700 / 2,700
(f) 0-26,977; (r) 16,861 / 36,644
BW206AD-5 AM
140.8
31,967
84.1
55.1
(f) 0-0.033; (r) 0.017 / 0.036
(f) 2,700; (r) 2,700 / 2,700
(f) 0-26,977; (r) 16,861
Pivot Steer
/ 36,644
BW154AP-4V
74.2
16,653
59.1
43.3
0.012 / 0.026
3,300 / 2,400
14,163 / 15,512
BW174AP-4V
99.6
20,283
66.1
48
0.008 / 0.018
3,600 / 2,700
13,713 / 17,985
BW154APO-4V
74.2
16,094
59.1
43.3
(f) 0.013 / 0.026; (r) 0.031
(f) 2,760 / 2,700; (r) 2,700
(f) 14,162 / 15,512
BW174APO-4V
99.6
20,944
66.1
48
(f) 0.008 / 0.018; (r) 0.029
(f) 2,760 / 2,700; (r) 2,700
(f) 13,713 / 17,985
BW154AP-4V AM
74.2
16,094
59.1
43.3
(f) 0-0.031; (r) 0.013 / 0.026
(f) 2,700; (r) 2,760 / 2,700
(f) 0-26,752; (r) 9,892 / 19,783
BW174AP-4V AM
99.6
20,944
66.1
48
(f) 0-0.028; (r) 0.008 / 0.018
(f) 2,760; (r) 2,700 / 2,700
(f) 0-32,822; (r) 7,644 /
E
Fro for win are
We
17,985
30
ASPHALT CONTRACTOR SEPTEMBER 2021
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w e
e
4/
65
61
61
2/
4/
En g i n e e r e d In n o v a t i o n . From innovative designs to Caterpillar dealer service and support, Weiler is paving the way to success for contractors across North America. Weiler’s material transfer vehicles, commercial pavers, road wideners, windrow elevators, static split-drum compactors, soil stabilizers, rock drills, tack distributors and front mount screeds are engineered with innovative features to increase productivity while reducing operating costs. Weiler equipment is sold and serviced exclusively at Caterpillar dealers throughout North America.
w e ile r p r o d u c ts .c o m
ACON0921_24-39_RollerSpecGuide_JD.indd 31
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Sponsored by
CATERPILLAR, INC. Caterpillar has a wide range of compaction products designed to make customers more successful. An extensive Cat dealer network gives customers the best lifetime value from their equipment allowing them to focus on getting the job done. We build the machines that build a better world. For more information visit cat.com. www.ForConstructionPros.com/10075307
Engine HP (net)
Operating Weight (lbs.)
Rolling Width (in.)
Drum Diameter (in.)
CB1.7
24.7
3,538
35
22.5
0.019
4,200
3,057
CB1.8
24.7
3,825
39
22.5
0.019
3,900
3,057
CB7 (solid drum)
100
17,615
59
44
0.012/0.026
3,200 / 3,800
11,982 / 17,603
Two Amplitude, Two Frequency vibratory system
CB7 (solid drum)
100
17,615
59
44
0.010/0.014/0.018/0.022/0.025
3,200
6,789 / 17,288
Five Amplitude vibratory system
CB7 (split drum)
100
19,908
59
44
0.012/0.024
2,520 / 3,200
13,309 / 16,590
Two Amplitude, Two Frequency vibratory system
CB8
100
18,783
67
44
0.010/0.022
3,200 / 3,800
11,982 / 17,603
Two Amplitude, Two Frequency vibratory system
CD8 (solid drum)
100
15,873
59-111
44
0.012/0.026
2,580 / 3,800
11,982 / 17,603
Two Amplitude, Two Frequency vibratory system
CD8 (split drum)
100
18,497
59-111
44
0.012/0.024
2,580 / 3,200
13,309 / 16,590
Two Amplitude, Two Frequency vibratory system
CB10 (solid drum)
131
20,945
67
47
0.012/0.032
2,580 / 3,800
15,714 / 18,344
Two Amplitude, Two Frequency vibratory system (Option 1)
CB10 (solid drum)
131
20,945
67
47
0.012/0.032
2,580 / 3,200
11,151 / 18,344
Two Amplitude, Two Frequency vibratory system (Option 2)
CB10 (solid drum)
131
20,945
67
47
0.028/0.034
2,580
16,389 / 19,693
Versa-Vibe vibratory system operating on low frequency
CB10 (solid drum)
131
20,945
67
47
0.010/0.015
3,800
13,084 / 19,491
Versa-Vibe vibratory system operating on high frequency
CB10 (split drum)
131
20,945
67
47
0.013/0.024
2,520 / 3,200
16,973 / 19,491
Two Amplitude, Two Frequency vibratory system
CB10 (split drum)
131
20,945
67
47
0.007-0.033
2,520
6,092 / 28,977
Automatic Adjustable Compaction (AAC) vibe system operating on low frequency
CB10 (split drum)
131
20,945
67
47
0.007-0.017
3,200
9,806 / 24,976
Automatic Adjustable Compaction (AAC) vibe system operating on high frequency
CD10 (solid drum)
100
19,335
67-118
44
0.013/0.026
2,700 / 3,200
11,150 / 18,344
Two Amplitude, Two Frequency vibratory system
CD10 (split drum)
100
21,738
67-118
44
0.013/0.024
2,520 / 3,200
16,973 / 19,491
Two Amplitude, Two Frequency vibratory system
CD10 (split drum)
100
21,738
67-118
44
0.007-0.033
2,520
6,092 / 28,977
Automatic Adjustable Compaction (AAC) vibe system operating on low frequency
CD10 (split drum)
100
21,738
67-118
44
0.007-0.017
3,200
9,806 / 24,976
Automatic Adjustable Compaction (AAC) vibe system operating on high frequency
Model No.
Amplitude (in.)
Frequency (vpm)
Centrifugal Force (lbs.)
Notes
Continued on page 34
32
ASPHALT CONTRACTOR SEPTEMBER 2021
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ACON0921_24-39_RollerSpecGuide_JD.indd 33
8/18/21 2:25 PM
Sponsored by
Continued from page 32 Rear drum oscillation system for CB10, CD10, CB13, CB15, CB16
0.044
2,400
–
Standard drum
CB13
142
27,557
79
51
0.026/0.030
2,520
16,950 / 19,963
Versa-Vibe vibratory system operating on low frequency
CB13
142
27,557
79
51
0.012/0.016
3,800
17,422 / 23,222
Versa-Vibe vibratory system operating on high frequency
CB13
142
27,557
79
51
0.012/0.019/0.026/0.032/0.038
2,520
7,800 / 24,728
Five Amplitude vibratory system
CB15
142
28,958
84
51
0.026/0.030
2,520
16,950 / 19,963
Versa-Vibe vibratory system operating on low frequency
CB15
142
28,958
84
51
0.012/0.016
3,800
17,422 / 23,222
Versa-Vibe vibratory system operating on high frequency
CB15
142
28,958
84
51
0.016/0.026/0.033/0.037/0.041
2,520
12,409 / 31,069
Five Amplitude vibratory system
CB16
142
31,941
84
51
0.026/0.030
2,520
16,950 / 19,963
Versa-Vibe vibratory system operating on low frequency
CB16
142
31,941
84
51
0.012/0.016
3,800
17,422 / 23,222
Versa-Vibe vibratory system operating on high frequency
CB16
142
31,941
84
51
0.016/0.026/0.033/0.037/0.041
2,520
12,409 / 31,069
Five Amplitude vibratory system
CB2.5*
48.2
5,546
39
28
0.51
3180/3840
4,592/6,696
CMV Optional
CB2.5 GC*
24.6
5,546
39
28
0.51
3000/3720
3,925/5,885
CMV Optional
CB2.7*
48.2
5,936
47
28
0.52
3180/3840
5,437/7,928
CMV Optional
CB2.7 GC*
24.6
5,936
47
28
0.52
3000/3720
4,646/6,968
CMV Optional
CB2.9*
48.2
6,415
51
28
0.50
3180/3840
5,559/8,108
CMV Optional
CC2.7*
48.2
5,718
47
28
0.52
3180/3840
5,437/7,928
CMV Optional
CC2.7 GC*
24.6
5,718
47
28
0.52
3000/3720
4,646/6,968
CMV Optional
CB4.0*
48.2
7,971
51
32
0.50
2700/3300
5,037/7,524
CMV Optional
CB4.4*
48.2
8,362
55
32
0.49
2700/3300
5,240/7,827
CMV Optional
CC4.0*
48.2
7,889
51
32
0.50
2700/3300
5,037/7,524
CMV Optional
Co
*NEW MODEL
WEILER The Weiler C307A and C310A Split-Drum Static Compactors enable the outer half of the drum to rotate faster than the inner half resulting in quick work on corners and curves, without mat tearing. www.ForConstructionPros.com/10075409
Model No.
34
Engine HP
Operating
Drum Width
Drum Diam-
Amplitude
Frequency
Centrifugal
(net)
Weight (lbs.)
(in.)
eter (in.)
(in.)
(vpm)
Force (lbs.)
C307A
74
20,500
50
40/53
N/A
N/A
N/A
C310A
74
26,580
50
40/53
N/A
N/A
N/A
C303
24
5,700
38/44
30
N/A
N/A
N/A
ASPHALT CONTRACTOR SEPTEMBER 2021
ACON0921_24-39_RollerSpecGuide_JD.indd 34
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ACON0921_24-39_RollerSpecGuide_JD.indd 35
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Sponsored by
DYNAPAC USA Dynapac tandem asphalt rollers offer productivity, serviceability and optimized ergonomics. Operators achieve high-quality surface finishes through features such as soft starting and stopping to prevent unevenness or cracking. www.ForConstructionPros.com/10072810
Model No. CC900G
Engine
Operating
HP (net)
Weight (lbs.)
19
2,800
Drum Width (in.) 35
Drum Diameter
Amplitude (in.)
(in.) 23
0.016
Frequency
Centrifugal Force (lbs.)
(vpm) 4,200
3,800
CC950
20
3,100
35
23
0.016
4,200
3,800
CC800
24
3,400
31
23
0.016
4,200
3,800
CC900
24
3,500
35
23
0.016
4,200
3,800
CC1000
24
3,700
40
23
0.014
4,200
3,800
CC1100 VI
35
5,300
42
27
0.02
3,660 / 3,960
5,600 / 6,500
CC1200 VI
35
5,700
47
27
0.02
3,660 / 3,960
6,500 / 7,600
CC1300 VI
50
8,600
51
35
0.008 / 0.020
3,240 / 3,660
4,700 / 8,500
CC2200
75
17,000
59
45
0.01 / 0.03
2,880 / 4,020
15,060 / 17,540
CC2300
75
18,800
59
45
0.008 / 0.020
2,880 / 4,020
13,260 / 16,190
CC3200
75
18,000
68
45
0.01 / 0.03
2,880 / 4,020
16,880 / 20,250
CC3300
75
19,800
68
45
0.01 / 0.02
2,880 / 4,020
16,190 / 18,440
CC4200 VI
130
22,000
66
51
0.012 / 0.031
3,060 / 4,020
18,880 / 28,780
T
CO4200 VI
130
22,000
66
51
0.012 / 0.031 (0.06 - Osillcation Drum)
3,060 / 4,020
18,880/ 28,780 (27,450 - Osillation Drum)
CC5200 VI
130
26,000
77
51
0.012 / 0.031
3,060 / 4,020
20,910 / 32,370
CO5200 VI
130
26,000
77
51
0.012 / 0.031 (0.06 - Oscillation Drum)
3,060 / 4,020
20,910 / 32,370 (27,450-Osillation Drum)
CC6200 VI
130
27,300
84
51
0.012 / 0.031
3,060 / 4,020
23,160 / 35,300
CC1100C VI
35
4,900
42
28
0.02
3,660 / 3,960
5,600 / 6,500
CC1200C VI
35
5,100
47
28
0.02
3,660 / 3,960
6,500 / 7,600
CC1300C VI
50
8,200
51
35
0.008 / 0.020
3,240 / 3,660
4,700 / 8,500
CC2200C
75
16,300
59
45
0.012 / 0.028
2,880 / 4,020
15,060 / 17,540
CC2300C
75
16,800
59
45
0.008 / 0.020
2,880 / 4,020
13,260 / 16,190
CC3200C
75
17,000
68
45
0.012 / 0.028
2,880 / 4,020
16,880 / 20,250
CC3300C
75
17,400
68
45
0.01 / 0.02
2,880 / 4,020
16,190 / 18,440
CC4200C VI
130
20,700
66
51
0.012 / 0.031
3,060 / 4,020
18,800 / 28,780
CC5200C VI
130
22,700
77
51
0.012 / 0.031
3,060 / 4,020
20,910 / 32,370
CS1400N
75
27,800
41.7 rear/ 22.4 front
59
Static
Static
Static
CC1400 VI
50
9,500
54
35
0.008 / 0.020
3,240 / 3,660
4,950 / 9,675
CC1400C VI
50
8,600
54
35
0.008 / 0.020
3,240 / 3,660
4,950 / 9,675
CO2200
75
17,000
59
45
0.01 / 0.03 (0.06 - Oscillation Drum)
2,400
15,060 / 17,540 (23,100 - Oscillation Drum)
CO6200 VI
130
27,300
84
51
0.012 / 0.031 (0.06 - Oscillation Drum)
3,060 / 4,020
23,150 / 35,300 (34,400-Osillation Drum)
CC900S
24
3,600
35
23
0.013
4,200
3,800
36
ASPHALT CONTRACTOR SEPTEMBER 2021
ACON0921_24-39_RollerSpecGuide_JD.indd 36
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8/18/21 2:27 PM
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ACON0921_24-39_RollerSpecGuide_JD.indd 37
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HYUNDAI CONSTRUCTION EQUIPMENT AMERICAS The Hyundai HR series tandem-drum rollers offer hydrostatic vibration system at both drums and automatic vibration mode (double / single vibration) – combined with front and rear scrapers to keep the drums free of material buildup. www.ForConstructionPros.com/10073348 Model No.
Engine HP
Operating Weight
Drum Width
Drum Diameter
Amplitude
(net)
(lbs.) (with ballast)
(in.)
(in.)
(in.)
Frequency (vpm)
Centrifugal Force (lbs.)
HR25T-9
31
5,952
39
30
0.02
3,180 / 3,660
4,833 / 6,295
HR26T-9
31
6,393
47
30
0.02
3,180 / 3,660
5,620 / 7,644
HR30T-9
31
6,614
49
30
0.02
3,120 / 3,480
6,519 / 8,318
SAKAI Sakai America is singularly focused on asphalt and soil rollers. Long-life drum isolators, heavy-duty centerpin hitch and gear-driven drums limit down time for operators. 4,000 vpm high frequency vibration and industry exclusive oscillation and vibration in both drums available. We understand what is necessary to provide customers with the proper tools to achieve the best results. Masters of Compaction. www.ForConstructionPros.com/10074524
Model No.
Engine HP (net)
Operating Weight (lbs.)
Drum Width (in.)
Drum Diameter (in.)
Amplitude (in.)
Frequency (vpm)
Centrifugal Force (lbs.)
SW354
24
6,525
47
27
0.012
4,000
6,520
SW354W
24
6,745
51
27
0.011
4,000
6,520
SW504
43
8,955
51
31
0.011 / 0.014
3,300 / 3,300
5,955 / 7,710
SW504W
43
9,260
54
31
0.010 / 0.013
3,300 / 3,300
5,955 / 7,710
SW654
73
15,585
58
42
0.011 / 0.021
3,000 / 4,000
13,940 / 15,510
2,940 / 2,940
15,285 vibe / 27,875 osc
2,500 / 4,000
9,665 / 23,155
3,000 / 3,000
25,180 vibe / 30,800 osc
2,500 / 4,000
14,160 / 39,790
3,000 vibe / 2,800 osc
35,585 vibe / 38,600 osc
2,500 / 4,000
15,285 / 41,590
3,000 vibe / 2,800 osc
35,585 vibe / 38,600 osc
4,000
2,965
SW654ND
73
16,250
58
42
SW774
110
22,090
66
49
SW774ND
110
23,270
66
49
SW884
130
28,415
79
55
SW884ND
130
29,165
79
55
SW994
130
29,255
84
55
SW994ND
130
29,960
84
55
CR271
16
3,440
35
22
38
ASPHALT CONTRACTOR SEPTEMBER 2021
ACON0921_24-39_RollerSpecGuide_JD.indd 38
0.020 vibe / 0.030 osc 0.012 / 0.020 0.020 vibe / 0.024 osc 0.013 / 0.025 0.022 vibe / 0.024 osc 0.013 / 0.026 0.021 vibe / 0.022 osc 0.014
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8/18/21 2:28 PM
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Engine HP
Operating
Drum
Drum Diameter
(net)
Weight (lbs.)
Width (in.)
(in.)
DV23E
33.5
4,960
39.4
27.4
DV26E
33.5
5,490
47.2
27.4
DV36E
43.9
8,290
51.2
33.5
DV45E
43.9
10,252
54.3
33.5
DV23D
33.5
4,920
39.4
27.4
DV26D
33.5
5,490
47.2
27.4
DV36D
43.9
8,290
51.2
33.5
DV45D
43.9
10,340
54.3
33.5
DV209D
100
21,080
66
48
DV210D
100
22,930
66
48
Model No.
Amplitude (in.)
Frequency (vpm)
DV23E
0.02
3,480 / 3,960
9,217
DV26E
0.02
3,480 / 3,960
10,566
DV36E
.016 - .024
2,460 / 3,300
11,668
DV45E
.016 - .024
2,460 / 3,300
12,949
DV23D
0.02
3,480 / 3,960
9,217
DV26D
0.02
3,480 / 3,960
10,566
DV36D
.014 - .022
2,700 / 3,420
11,240
DV45D
.014 - .022
2,700 / 3,420
12,364
DV209D
.013 - .0276
2,520 / 3,300
15,737 / 18,884
DV210D
.014 - .032
2,520 / 3,120
17,535 / 26,977
www.ForConstructionPros.com/Asphalt
ACON0921_24-39_RollerSpecGuide_JD.indd 39
Centrifugal Force (lbs.)
www.tarmacinc.com
contact tarmac at 816-220-0700 or info@tarmacinc.com
SEPTEMBER 2021 ASPHALT CONTRACTOR
39
8/18/21 2:28 PM
PRESERVATION UPDATE |
JESSICA LOMBARDO, EDITOR-IN-CHIEF
A
Milling Best Practices Improve the Quality of
Many factors will determine the quality of the recycled asphalt pavement materials being produced
T
he use of recycled asphalt pavement (RAP) is continuing to grow in the United States. In 2020, the National Asphalt Pavement Association reported that the industry reclaimed 97 million tons of RAP for future use, saving about 58.9 million
40
ASPHALT CONTRACTOR SEPTEMBER 2021
ACON0921_40-47_PresMilling_JD.indd 40
cubic yards, or enough landfill space to fill up the dome of the U.S. Capitol 1,223 times. This massive reclamation effort also saved $5.3 billion in gate fees for disposal in landfills. Our country’s most diligent recyclers are in fact asphalt mixture producers, who utilize more than 94 percent of old asphalt pavements in new pavement construction. But are they doing the best they can to ensure these materials are being recycled properly? “Sizing of RAP can have a dramatic effect on how well RAP goes through asphalt plant," Kyle Neisen roadbuilding
product manager at Astec Industries says. “A more consistent size coming in off the milling machine will be more efficient for everyone involved.” By maintaining RAP quality in the field, the asphalt plant can achieve a faster turnaround using the RAP in a new mix design. Here are some ways to do that. IMPACT OF OPERATOR Operators play a huge role in the success of your operations, but this is especially true when milling where the operator plays the biggest part in ensuring quality.
www.ForConstructionPros.com/Asphalt
8/18/21 2:58 PM
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8/18/21 2:59 PM
PRESERVATION UPDATE
Maintaining milling best practices across the board can be better than changing the drum, both in terms of quality and productivity.
Get the Most from Your RAP The main purpose for using RAP is to recover the oil so less virgin oil is used in the new asphalt. Making sure you’re getting the most out of this material is important to the success of your milling operations. “The level of AC (asphalt content) in milled RAP has a big impact on the quality and the final AC content of the new asphalt it’s used in,” Dave Peterson, market professional with Caterpillar Cold Planers says. “That’s one reason why mill and fill applications are so effective, because they simply remove the top wearing course of a road where the oil content is typically the highest, and least likely to be contaminated with base aggregates. That RAP material is then very good for use in making new asphalt.” To be the most successful at this, you need to know exactly what you’re milling up. “Asphalt is placed in lifts and each lift has different rock and oil content,” Miller with BOMAG says. “Depending on how deep you are cutting, you may want to do this in lifts to separate the usable RAP with good oil content from the older material that may not have any oil left.” Contamination is also a big factor in ensuring proper RAP quality. “Operators should be aware of contamination and try to avoid major contamination, such as picking up dirt from the shoulder,” Niesen with Astec Industries adds. “Dirt can damage a mill head and results in poor quality RAP.” Frequent contamination points also include the shoulder, going into the base layer and debris around intersections. Contamination can also happen by accident, but can be easily managed through communication on the jobsite. “Periodically, RAP material could encounter foreign oil or fuel leaks, either from the milling machine or one of the support vehicles (water truck, fuel truck, dump truck),” Chastain with Wirtgen America says. “Once we establish where the leak is coming from, we need to get that machine off the road in safe spot to address the problem. ”You also need to let supervisor know about what has happened. This communication allows all involved to know we may have contaminated material. If we catch it, the plant may be able to separate that contaminated material from the quality RAP. Also, throwing garbage, old cutting tools, etc. under the machine to put into the truck is not a good practice as well.”
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“How an operator runs the machine will absolutely determine the quality of the RAP,” Austin Miller, paving development manager at BOMAG Americas says. “If he runs too fast or raises the front moldboard too high, it can produce large slabs that will have to be processed through a crusher and screen and stacked for use at a later date. If the operator can produce a consistent material with minimal deviations, the material can be processed during the making of the new mix with a small grinder or RAP wrangler prior to being put into the material bin on the asphalt plant.” Therefore, consistency is key to RAP quality control. “By maintaining a consistent pace of milling, and not going too fast, operators can help control quality,” Niesen adds. “If the operator slows down a few feet per minute it can help the machine get consistent size material.” Machine controls can help with this. “Properly setting things like rotor speed, travel speed, front antislab and rear moldboard position all contribute to achieving the desired pattern or surface finish behind the mill,” Jameson Smieja, global sales consultant with Caterpillar Cold Planers says. “Also proper setting and use of an automatic grade and slope
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PRESERVATION UPDATE
systems significantly improves the profile of the milled surface to be repaved.” Operators also need to be aware of other factors outside of their control like the material being milled which impacts their water usage. “The material does have something to do with quality,” Tom Chastain, milling product manager at Wirtgen America says. “How much water we are running can affect the RAP once it hits the plant due to how much water consumption the material has. Too much water consumption could mean we need to run the RAP through the dryer to bring that down some.” IMPORTANCE OF THE DRUM The drum you choose will obviously determine the size of material being processed and that is usually influenced by the desired spec of the job. “Different cutting tools will affect sizing of material,” Chastain says. “Different sized carbide or diamond tools can either cut the material in small sizes or larger flakes.” The finer the drum pattern, the finer the material will be. “That is not always good as you don’t want to create more fines which is counterproductive in most cases,” Miller cautions. “Bottom line, pick the drum for the surface texture you desire, not for the RAP quality.” “In general, you can hit any smoothness spec with any drum if know how to control machine,” Niesen says. “Not frequently do you have to go to micro-milling or quad wrap but doing either can help maintain production speeds while also achieving desired smoothness.”
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One you have that drum in place, making sure it’s properly maintained is paramount to the success of your milling application. “The maintenance of the drum is key in the quality of the RAP produced,” Miller says. “With good tooling, you will get a cleaner cut and less breakage of the aggregate. Once the teeth reach stage 4 or 5 of wear, they will tend to break the
material or crush it instead of cutting. Watching your cut pattern and checking your teeth on a regular basis will ensure you are getting quality material.” Last but not least, monitor the milled surface and make adjustments as necessary, including the replacement of cutting teeth. This will help maintain the best quality throughout the job. “Cutting tools affect not only RAP sizing, but machine performance and pattern quality,” Chastain says. “Operators need to keep an eye on what the pattern looks like, how is the machine performing and look at the material that is being loaded into the truck. As
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Top: Sizing of RAP can have a dramatic effect on how well RAP goes through asphalt plant. A more consistent size coming in off the milling machine will be more efficient for everyone involved. Bottom: Monitor the milled surface and make adjustments as necessary, including the replacement of cutting teeth. This will help maintain the best quality throughout the job.
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PRESERVATION UPDATE
cutting tools wear, pattern quality can go down, then the machine performance goes down, then we see the RAP sizing start to be affected. If the cutting tools are wearing evenly, maybe we just need to slow the machine down, or possibly change what working parameters or drum speed we have the machine in.” Maintaining best practices across the board can be better than changing the drum, both in terms of quality and productivity. “At the end of the day, control the factors you can control,” Chastain says. “Machines need to be maintained properly and drum maintenance is extremely crucial. We need to have a cutter drum that is well maintained, and the proper cutting tools installed to achieve higher quality. Water spray systems also need to be in proper working order to make sure we are getting proper spray to the key areas.”
PROPER STORAGE & PROCESSING Once RAP is transported back to the plant, the importance of quality control continues. The transportation, storage and utilization of RAP is always a logistical challenge, but the single most important best practice is to treat RAP the same way you treat virgin materials. This means always keeping the RAP clean and dry before it’s reprocessed and
put back on our roadways. When possible, store processed RAP stockpiles under cover, or at least in an area with a sloped surface and good drainage. NAPA recommends paving underneath stockpiles to allow for proper drainage. “Storing processed RAP in a covered building is the most desirable,” Miller says. “It will keep the direct sun off the material which can heat the material
Properly setting things like rotor speed, travel speed, front antislab and rear moldboard position all contribute to achieving the desired pattern or surface finish behind the mill.
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up and cause it to stick back together. If you have to store out in the open, try and process just enough for your job as close to the start of the job as you can so it has less time in the sun.” One practice that makes higher percentages of RAP more successful is fractionation of the material. A producer should separate the material into two or more stockpiles based on the size of the RAP particles. It's becoming more common to separate RAP into a coarse pile, with particles of more than 1/2-in. or 3/8-in. in size, and a fine pile with particles of 1/2-in. minus or so. That lets contractors use fine RAP in finer asphalt mixtures and coarse RAP in coarse mixtures. Crush only what you need for a two- to three-month period. Re-use of the RAP material is recommended within two-to-three-month period. Longer storage periods may be expected when the material is under cover. Also,
avoid driving loaders on RAP stockpiles, which leads to premature compaction of the processed RAP. The use of RAP is not going away. Follow these best practices for processing and stockpiling the material and you’ll be sure to produce a better-quality product.
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CLASSIFIEDS
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Index Advertiser Index
PAGE
ALMix
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Asphalt Drum Mixers Inc. (ADM)
17
Astec Inc.
26-27, 51, 52
Bomag Americas
13
Eager Beaver Trailers
45
Etnyre
47
Gencor Industries Inc.
3, 5
IGNITE Construction Summit
22
LeeBoy, Inc.
2
Meeker Equipment Co. Inc.
35
Minds, Inc.
37
Pegasus Vans & Trailers, Inc.
41
SealMaster
7
Systems Equipment
29, 43
Tarmac International, Inc.
39
TransTech Systems, Inc.
33
Weiler Products
31
Wirtgen America Inc.
19, 21, 23, 25
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THE LAST EXIT |
JESSICA LOMBARDO, EDITOR-IN-CHIEF
Contractors Need More Resources to Move Infrastructure Projects Forward How will the industry accomplish the influx of work headed our way? These tools can help
A
• • • •
Core LaborOS/Crews by Core Pro TraLaMa ProCore TradeHounds While it's impossible to completely avoid the impact of a labor shortage that affects the entire country, it's possible to combat this with innovative technological advances. More people may be inclined to join the industry if they understand that it is an environment that embraces technology.
s discussions continue on the Infrastructure Investment and Jobs Act, contractors are readying themselves to scoop up as much of the incoming business as possible. In their excitement however, many construction businesses are neglecting CASH FLOW the fact that they don't Estimating and project have the manpower or delivery issues are addiequipment they will need tional problems contractors to complete these projects. need to be prepared to In order to not only address. To gain and maincompete with this influx tain public confidence, of work, but succeed in projects need to deliver the Jonathan Byer/ completing these jobs, conresults that owners promTeichert Construction ise, within the timeframes tractors are going to need to they set. That means projects need rethink how they hire, bid and work and technology will be key to that. According to be completed more efficiently and cost-effectively. to a new survey, construction technology Cost overrun is a common problem can provide a 15-20% cost reduction on that construction companies experience road, bridge, airport, mass transit and for a number of reasons. Contractors other infrastructure construction projare going to need to consider investects. The time to act is now. ing in estimating and bidding software that can manage the elements of project HEAD COUNT overruns. Here are a few technologies: According to recent data from the U.S. • Briq Chamber of Commerce, 88% of contrac• ProEst tors surveyed report moderate to high • B2W levels of difficulty finding skilled workers • HCSS and over one-third (35%) are turning A cloud-based project management down work due to the labor shortage. An solution is also necessary. According to insufficient number of workers will make it difficult to complete projects in a timely Trimble, siloed processes and systems create a domino effect of miscommuand cost-effective manner. nication and inefficiencies. Rework, Here are some solutions for hiring change orders, duplicate models and and labor management: manual data entry drastically impact • LaborChart
profitability. Here are a few construction project management platforms to help you streamline your operations: • Trimble FieldLink • YellowBird • TraceAir • Propeller Platform • HeadLight By taking the proper steps to put a sufficient project budget in place and automate various processes, construction companies can effectively avoid cost overrun. ON-SITE TECHNOLOGY Between the pandemic, mounting climate concerns and the rapid, ongoing digitization of society, the stakeholders involved in building and operating America’s road and bridges can no longer resist change. There are many ways to work smarter, not harder in order to complete the work that will be required of our industry. Here are some solutions for increasing productivity on road building jobsites: • BOMAG BOMAP Connect • Trimble 3D RoadWorks • Witos for Paving • Caterpillar eRoutes Mobile App • Topcon PaveLink App You have an opportunity right now. A refusal to adapt to accommodate this influx of work will worsen performance, while developing new business and operating models could allow companies to generate more value and profit. The choice is yours.
For more information on technology for the asphalt industry, visit ForConstructionPros. com/21119160
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BUILT TO CONNECT
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