SEPTEMBER 2022 MEASURE ASPHALT DENSITY WITH CUTTING TECHEDGE www.ForConstructionPros.com/Asphalt+ EXCLUSIVE:INDUSTRY ROLLER SPEC GUIDE –BROWSE OVER 175 MODELS BATCHBONUS:VSDRUM:WHATASPHALTPLANTWORKSBESTFORYOU?
And a world of experience to build that road. As the global leader in road construction and minerals processing technology, we‘ve seen just about everything there is to see. In every climate, every condition, every twist, turn and terrain. And we put that world of experience in your hands, so you can experience exceptional performance and results at every phase of the road construction cycle. A JOHN DEERE COMPANY CLOSE TO OUR CUSTOMERS It takes a road to get there. WIRTGEN VÖGELE HAMM KLEEMANN
IN EVERY ISSUE 8 Editor’sPerspective 50 The Last Exit 4 ASPHALT CONTRACTOR SEPTEMBER 2022 www.ForConstructionPros.com/Asphalt TABLE OF CONTENTS | SEPTEMBER 2022
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LATEST INNOVATIONS FOR ASPHALT PROFESSIONALS WWW.FORCONSTRUCTIONPROS.COM/ASPHALT CONTRACTOR CONTR AC TOR LATEST INNOVATIONS FOR ASPHALT PROFESSIONALS ASPHALT CONTR AC TOR LATEST INNOVATIONS FOR ASPHALT PROFESSIONALS A sph a lt LATEST INNOVATIONS FOR ASPHALT PROFESSIONALS WWW.FORCONSTRUCTIONPROS.COM/ASPHALT CONTRACTOR CONTR AC TOR LATEST INNOVATIONS FOR ASPHALT PROFESSIONALS ASPHALT CONTR AC TOR LATEST INNOVATIONS FOR ASPHALT PROFESSIONALS A sph a lt LATEST INNOVATIONS FOR ASPHALT PROFESSIONALS WWW.FORCONSTRUCTIONPROS.COM/ASPHALT CONTRACTOR CONTR AC TOR LATEST INNOVATIONS FOR ASPHALT PROFESSIONALS ASPHALT CONTR AC TOR LATEST INNOVATIONS FOR ASPHALT PROFESSIONALS A sph a lt CONTRACTOR SEPTEMBER 2022 Vol. 36, No. 7 SPECIAL REPORT: QUALITY CONTROL 24 Quality ProductsControl Several of the top industry products used for measuring asphalt density. 30 Tech Tools for AsphaltMeasuringDensity By using the proper equipment to measure asphalt contractorsdensity,can help ensure the success of the roadway and keep record of their efforts. NOTESPRODUCTION 34 Batch Vs. Drum: What To Consider Before You Buy Investing in new an asphalt plant? These tips can help you find the best match. INNOVATIONSJOBSITE 38 Which Roller Should I Use? Selecting the proper roller for the application, and using it correctly, will ensure optimal surface compaction on your construction projects. PRESERVATIONPAVEMENT 44 How Do We Improve Longevity?Pavement Asset owners have more pavements to maintain than money to do so, which is why the industry needs to continually deploy proper preservation techniques to protect these investments. Industry Exclusive: Roller Spec Guide Compare over 175 different asphalt rollers to help you decide which will best suit the needs of your team. | 12 STORYCOVER
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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.
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From increasing efficiencies to lowering carbon footprints, innovations are available to help mix producers meet their goals. Use the QR code below to download this FREE guide and discover the tools and technology to reduce costs, grow profits and produce quality results. Read
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An ACT Research analysis of the North American commercial vehicle market shows reflecting better-than-expected production in June. 2023 is expected to be a good year, the report states. more at: http://asphalt.com/ Bipartisan more at: http://asphalt.
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www.ForConstructionPros.com/Asphalt DIGITAL CONNECTION Report: ForecasttoIndicatorsEconomicLeadRaised2022
of new heavy construction equipment, construction technology solutions and consumable products. Read
IRONPROS Helps Companies Become Better Buyers of market more at: http://asphalt.com/8lz8gk more at: http://asphalt.com/18xjt0
Get social with us! Share pictures of what you’re working with over 29,000 other asphalt contractors on our Facebook Asphalt.Contractor/Facebook.com/page: ©phaisarnwong2517 – stock.adobe.com ©ABCDstock – stock.adobe.com © candy1812 – stock.adobe.com 6 ASPHALT CONTRACTOR SEPTEMBER 2022 www.ForConstructionPros.com/Asphalt Two Massive Asphalt Producers Join NAPA’s Net Zero Initiative In order to achieve an ambitious 2050 net-zero emissions goal across the asphalt industry, powerful partnerships are needed. Read
THE TOOLS OF INDUSTRY
QUALITY VS CONTROL
Tadashi Soma
201 N. Main Street | Fort Atkinson, WI 53538 800.538-5544 • www.ACBusinessMedia.com
Ad Production Manager Cindy Rusch Art Director April Van Etten Audience Development Mgr Angela Franks Advertising Sales (800) 538-5544 Kris Flitcroft kflitcroft@ACBusinessMedia.com Sean Dunphy sdunphy@ACBusinessMedia.com
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The second thing this quote confronts me with, subsequently, is an appreciation for hav ing the right tool. Once I've really fleshed out the things I want to achieve, the one-dimen sional tool (i.e. the hammer) immediately reveals its limitations.
A braham Maslow wrote in 1966, "If the only tool you have is a hammer, it is tempting to treat everything as if it were a nail.” I love this concept, because it always helps me do two important things. First, it helps me reframe any given problem in front of me. Whether I'm in the thick of it, striving to educate myself further in this vast and complex industry I am now a part of, or even normal home repair DIY projects I'm struggling to get done. It makes me take a second look at the "nail,” and ask if there is a completely different way to perceive or quantify my goals. Is it really a nail? Maybe it's screw? Maybe it's the damn wifi router and it just needs unplugged and I just want to smash it with a hammer because it will feel good.
8 ASPHALT CONTRACTOR SEPTEMBER 2022 www.ForConstructionPros.com/Asphalt
The true and most valuable tools of the industry are the men and women who put their hand to the grindstone every day, stand in the baking sun, put on their boots and get the job done. Smart business owners know this. They listen and pay attention when their people share the knowledge of their experi ence. A person who's done a task 1000 times knows a thing or two about that task, and sometimes are the first to know when the "hammer" is the wrong way to go.
This issue we've set our sights on quality. There are a lot of ways to assure the kind of quality standards you need to achieve can be met. In this issue, we share some of the cur rent devices, technology and methodology that can get you there. That isn't the final word, though, because we would be remiss if we left it at that alone. Anyone can tell you how diffi cult it is, not just in our industry but across the board, to find, hire and keep good hard work ers today. Sometimes it is a matter of the pool of available workers, but other times it's not. Maybe you are like the other thousands of employers out there with open positions that desperately need filled. You are looking for the type of quality employee that you're not going to invest time, resources and energy only to see them bail a short time later. Take a second look. The people on your team likely have a fresh perspective on how to attract what it is you need. Perhaps, it isn't a nail, and you don't need a hammer.
SEPTEMBER 2022 • Vol. 36 No. 7
Like most heavy industries, it is easy to conflate what the real "tools" are when you have giant, hulking machines throwing their impressive weight around. They are truly modern marvels. They can tear up a stretch of highway, process it, blend it and turn it right back around into a freshly pressed road. And they are getting smarter, more advanced, and complex every day. Our reliance on them grows at a similar pace too. However, when broken down to their most basic elements and function, they are still hammers.
ForConstructionPros.comtsoma@ACBusinessMedia.com
PERSPECTIVE
EDITOR’S Only As Good As Your People
Editor-in-Chief Jessica jlombardo@ACBusinessMedia.comLombardo
Editor Brandon bnoel@ACBusinessMedia.comNoel Managing Editor Gigi Gwood@acbusinessmedia.comWood
Digital Content Director Wayne Grayson Managing Editor Gigi Wood Change of Address & Subscriptions PO Box 3605, Northbrook, IL 60065-3605, Phone: (877) 201-3915 • Fax: circ.AsphaltContractor@omeda.com847-291-4816
Published by AC Business Media Noel, Editor 234-600-8983bNoel@ACBusinessMedia.com
Publicationwww.ForConstructionPros.com/AsphaltStaff
LATEST INNOVATIONS FOR ASPHALT PROFESSIONALS CONTRACTOR CONTR AC TOR LATEST INNOVATIONS FOR ASPHALT PROFESSIONALS ASPHALT CONTR AC T OR LATEST INNOVATIONS FOR ASPHALT PROFESSIONALS A sph a lt LATEST INNOVATIONS FOR ASPHALT PROFESSIONALS CONTRACTOR CONTR AC TOR LATEST INNOVATIONS FOR ASPHALT PROFESSIONALS ASPHALT CONTR AC T OR LATEST INNOVATIONS FOR ASPHALT PROFESSIONALS A sph a lt LATEST INNOVATIONS FOR ASPHALT PROFESSIONALS CONTRACTOR CONTR AC TOR LATEST INNOVATIONS FOR ASPHALT PROFESSIONALS ASPHALT CONTR AC T OR LATEST INNOVATIONS FOR ASPHALT PROFESSIONALS A sph a lt CONTRACTORBrandon
For reprints and licensing please contact Tadashi Soma at (800) 538-5544 ext. 1245 tsoma@ACBusinessMedia.com List Rental Bart Piccirillo, Sr. Account Manager, Data Axle Phone: (518) 339 4511, E-mail: bart.piccirillo@infogroup.com AC Business Media. Chief Executive Officer Ron Spink Chief Financial Officer JoAnn Breuchel Chief Digital Officer Kris Heineman Chief Revenue Officer Amy Schwandt Brand Director, Supply Chain & Green Industry Jason Desarle Brand Director, Construction Sean Dunphy Vice President, Operations Nick Raether VP Audience Development Ronda Hughes Director, Demand Generation & Education Jim Bagan General Manager. Online & Marketing Services Bethany Chambers Content Director Marina Mayer
The quality of your company and its product can be most accurately measured by the workers behind them
Publisher Amy aschwandt@ACBusinessMedia.comSchwandt
Discover the full line of SealMaster pavement products & equipment at sealmaster.net THE ROAD TO PAVEMENT PRESERVATION Road withProductsMaintenance&EquipmentProvenPerformance ROAD MASTICCRACKMELTER/APPLICATORSCRACKCRACKCRACKMASTERSEALANTSHOT-APPLIEDSEALANTSPROPROMACHINES MACHINEMASTIC APPLICATORMELTER/ LIQUID ROAD sealmaster.net 800-395-7325
ADM KNOWS NO
When it comes to buying the asphalt plant that’s right for you, discover ADM. We don’t limit you to the cookie cutter solutions you find elsewhere. Instead, we get to know you and your business, so we can customize a plant for you from one of our four series of asphalt plants.
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HD+ 120i VO 154 27,596 78 55 0.014 / 0.035 2,400 / 3,000 21,375 / 38,925 vibration-oscillation
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
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+ 110i VV HF 114 22,711 66 47 0.013 / 0.029 2,700 / 4,020 28,800 / 33,075 high-frequency 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
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 SponsoredoscillationbyW 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.
12 ASPHALT CONTRACTOR SEPTEMBER 2022 www.ForConstructionPros.com/Asphalt
www.ForConstructionPros.com/10073218ModelNo.EngineHP(net)OperatingWeight(lbs.)Drum(in.)Width Drum (in.)Diameter Amplitude(in.) Frequency(vpm) CentrifugalForce(lbs.) Notes HD 8 VV 21.8 3,506 31.5 24.4 0.017 / 0.017 2880 / 3,660 2475/ 3,825 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 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 HD+ 90i VV 114 20,176 66 47 0.013 / 0.024 2,520 / 3,000 13,500 / 16,876 vibration-vibration 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
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.
HAMM/WIRTGEN GROUP
HD+ 120i VV 154 26,978 78 55 0.014 / 0.035 2,400 / 3,000 21,375 / 38,925 vibration-vibration
HD+ 110i VV 114 22,711 66 47 0.019 / 0.032 2,520 / 3,000 22,275 / 27,000 vibration-vibration
*specs are for front vibratory drums only. See additional oscillation drum specs on website for more detail
drums available. www.ForConstructionPros.com/10074524 Model No. Engine(net)HP WeightOperating(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 SW654ND 73 16,250 58 42 0.020 vibe / 0.030 osc 2,940 / 2,940 15,285 vibe / 27,875 osc SW774 110 22,090 66 49 0.012 / 0.020 2,500 / 4,000 9,665 / 23,155 SW774ND 110 23,270 66 49 0.020 vibe / 0.024 osc 3,000 / 3,000 25,180 vibe / 30,800 osc SW884 130 28,415 79 55 0.013 / 0.025 2,500 / 4,000 14,160 / 39,790 SW884ND 130 29,165 79 54 0.022 vibe / 0.024 osc 3,000 vibe / 2,800 osc 35,585 vibe / 38,600 osc SW994 130 29,255 84 55 0.013 / 0.026 2,500 / 4,000 15,285 / 41,590 SW994ND 130 29,960 84 54 0.021 vibe / 0.022 osc 3,000 vibe / 2,800 osc 35,585 vibe / 38,600 osc CR271 16 3,245 35 22 0.014 4,000 2,965 R2H-4 73 30,955 83 (combined) 64 Static Static Static HYUNDAI EQUIPMENTCONSTRUCTIONAMERICAS 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/10073348ModelNo.EngineHP(net)Operating Weight (lbs.) (with ballast) Drum(in.)Width Drum (in.)Diameter Amplitude(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
asphalt
www.ForConstructionPros.com/Asphalt SEPTEMBER 2022 ASPHALT CONTRACTOR 13
SAKAI Sakai America in rollers, rollers and light compaction equipment road paving construction site preparation markets. Sakai is one of the compaction industry’s most experienced manufacturers and is known for its Japanese reliability, quality operating simplicity. limit down high both
soil
and
for the
and
time for operators. 4,000 vpm
specializes
frequency vibration in
Long-life drum isolators, heavy-duty center-pin hitch and gear-driven drums
* Oscillating drum; ** Oscillation force Sponsored by
www.ForConstructionPros.com/10075166ModelNo.EngineHP(net)OperatingWeight (lbs.) Drum Width (in.) Drum Diameter (in.) Amplitude (in.) Frequency (vpm) Centrifugal Force (lbs.) RD12L-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**
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 man aged telematics program, focuses on easy-to-understand case alerts rather than traditional fault codes. www.ForConstructionPros.com/10075146ModelNo.EngineHP(net)OperatingWeight(lbs.)Drum(in.)Width Drum Diameter (in.) Amplitude (in.) Frequency (vpm) Centrifugal Force (lbs.) DD15 16.4 3,372 35.4 22 0.015 4,000 3,500 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 DD105OSC 114 21,718 66.1 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" 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 30,486 84 55 0.0139 / 0.0346 4,000 / 2,700 36,680 / 41,720 DD140C (8 amplitude) 30,486 84 55 0.0129 / 0.0249 3,200 21,810 / 42,170
14 ASPHALT CONTRACTOR SEPTEMBER 2022 www.ForConstructionPros.com/Asphalt WACKER NEUSON No matter what the job site requirements, Wacker Neuson has the perfect roller to fit the job. The newest designs include excellent curb and side clearance, outstanding visibility to the drum edges and increased water and fuel capaci ties to minimize refills during the work day, increasing efficiency.
148
148
INC.
BOMAG offers three different types of vibrator/ exciter systems – standard, TanGo oscillation and Asphalt Manager directional vibration – to meet customer needs.
16 ASPHALT CONTRACTOR SEPTEMBER 2022 www.ForConstructionPros.com/Asphalt vibrationexcited)(circularStandard Model No. Engine(net)HP WeightOperating(lbs.) Drum(in.)Width Drum (in.)Diameter 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 TanGO Oscillation 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 Asphalt Manager 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 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 / 36,644 SteerPivot 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 / 17,985
BOMAG AMERICAS,
www.ForConstructionPros.com/10072222
www.ForConstructionPros.com/Asphalt SEPTEMBER 2022 ASPHALT CONTRACTOR 17 Sponsored by CASE CONSTRUCTION EQUIPMENT CASE E Series vibratory rollers feature a completely redesigned operator interface for intuitive operation and improved ergonomics. New control features include an electronic travel lever with an extended range of functions right at the operator’s fingertips, including RPM settings, drive settings, sprinkler system controls, parking brake and more. www.ForConstructionPros.com/10072356ModelNo.EngineHP(net)OperatingWeight(lbs.) WidthDrum(in.) Drum (in.)Diameter Amplitude (in.) Frequency(vpm) CentrifugalForce(lbs.) DV23E 33.5 4,960 39.4 27.4 0.02 3,480 / 3,960 9,217 DV26E 33.5 5,490 47.2 27.4 0.02 3,480 / 3,960 10,566 DV36E 43.9 8,290 51.2 33.5 .016 - .024 2,460 / 3,300 11,668 DV45E 43.9 10,252 54.3 33.5 .016 - .024 2,460 / 3,300 12,949 DV36E 43.9 8,290 51.2 33.5 .014 - .022 2,700 / 3,420 11,240 DV45E 43.9 10,340 54.3 33.5 .014 - .022 2,700 / 3,420 12,364 DV209D 100 21,080 66 48 .013 - .0276 2,520 / 3,300 15,737 / 18,884 DV210D 100 22,930 66 48 .014 - .032 2,520 / 3,120 17,535 / 26,977
18 ASPHALT CONTRACTOR SEPTEMBER 2022 www.ForConstructionPros.com/Asphalt 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 fo cus on getting the job done. We build the machines that build a better world. For more information visit cat.com. www.ForConstructionPros.com/10075307 Model No. EngineHP(net) OperatingWeight(lbs.) RollingWidth(in.) DiameterDrum(in.) Amplitude (in.) Frequency (vpm) Centrifugal Force (lbs.) Notes 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 CB8 100 18,783 67 44 0.010/0.022 3,200 / 3,800 11,982 / 17,603 Two Amplitude, Two Frequency vibratory system CB10 (solid drum) 131 20,945 67 47 0.012/0.032 2,400 / 3,800 15,714 / 18,344 Two Amplitude, Two Frequency vibratory system (Option 1) 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 Rear drum oscilla tion system for CB7, CB10, 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 Continued on page 34
dynapac.us | 800-651-0033 Designed to perform, Built to last Follow Dynapac North America Provide high-quality compaction in areas where vibration needs to be reduced with oscillation technology; bridge decks and joints, near foundations and concrete structures and better performance on thin asphalt layers. Industry’s best warranty for oscillation drum shell – 7 years / 7,500 hr pro-rated warranty Large water tank to prevent more stops for refilling Full seat rotation with electronic steering to improve comfort an ergonomicsRecord number of passes, potion, temperature and compaction value in real time with Dyn@Lyzer
20 ASPHALT CONTRACTOR SEPTEMBER 2022 www.ForConstructionPros.com/Asphalt Sponsored by 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 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 *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/10075409ModelNo.EngineHP(net)OperatingWeight(lbs.)Drum(in.)Width Drum Diam eter (in.) Amplitude(in.) Frequency(vpm) CentrifugalForce(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 Continued from page 18
/ PM312 / PM622 / PM822 INNOVATION FOR THE FUTURE RISE TO MEET THE ROAD WITH CAT® COLD PLANERS Rise to meet the challenges of your work with Cat® cold planers. Today’s milling lineup reflects what matters to you, including improved features for ease of operation, more uptime and reliable performance. No matter what your work demands, you can face it with confidence in your equipment — and a partner you can trust. Your local Cat dealer is there every step of the way with unmatched parts and service support. When it comes to tackling your milling goals, we’re right there with you. See how Cat cold planers meet the challenges of your jobsite at cat.com/coldplaners. © 2022 Caterpillar. All Rights Reserved. CAT, CATERPILLAR, LET’S DO THE WORK, their respective logos, “Caterpillar Corporate Yellow,” the “Power Edge” and Cat “Modern Hex” trade dress as well as corporate and product identity used herein, are trademarks of Caterpillar and may not be used without permission.
DYNAPAC NORTH AMERICA
For
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 more information visit http://asphalt.com/h6j77v
Sponsored by 22 ASPHALT CONTRACTOR SEPTEMBER 2022 www.ForConstructionPros.com/Asphalt Model No. HPEngine(net) WeightOperating(lbs.) Drum Width (in.) Drum (in.)Diameter Amplitude (in.) Frequency(vpm) Centrifugal Force (lbs.) CC900G 19 2,800 35 23 0.016 4,200 3,800 CC950 20 3,000 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 25 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 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 17,000 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 68 51 0.012 / 0.031 3,060 / 4,020 18,880 / 28,780 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 22,700 77 51 0.012 / 0.031 3,060 / 4,020 20,910 / 32,370 CO5200 VI 130 25,800 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 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 CC1300 VI 50 8,600 51 35 0.008 / 0.020 3,240 / 3,660 4,700 / 8,500 CC1300C VI 50 8,200 51 35 0.008 / 0.020 3,240 / 3,660 4,700 / 8,500 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
• Meets state DOT and FHWA requirements for intelligent compaction specifications com/12058450www.ForConstructionPros. For more information visit https://pavemg.com/gmpcn2
• Quickly tells operators if mix is stable or if moderate or severe temperature variation is occurring
• Creates data reporting files to download for applications such as DOT compliance via an interactive Pavelink module
• Sensor design built specifically for the extremes of the asphalt paving environment • Foldable deployment arms with high-visibility for work site safety • Warm-up time of under one minute when ambient temperature is over 70° F
Densitywww.ForConstructionPros.com/21119999InstroTek3500XplorerNuclearGauge
• This unit has been thoroughly tested for ruggedness and accuracy www.ForConstructionPros.com/21010109
• Reduces the occurrence of inadequate densities and time spent taking core samples, improves quality, and leads to much greater uniformity
• Data gathered from pass mapping, temperature mapping and density mapping is stored on the IC system’s internal 14 GB hard drive, which provides enough space for approximately seven months of data logging
www.ForConstructionPros.com/21121074GSSIPaveScan2.0Asphalt
Volvo Density Direct CompactionIntelligentSystem
• Provides a visualization to operators in real time of whether the mix falls within a pre-defined temperature range
A highly advanced but very intuitive moisture density gauge with straightforward and uncomplicated operation.
• Offers pass mapping, temperature mapping and data storage features; Volvo IC with Density Direct includes real-time density mapping technology
• The simple keypad layout and program design will permit technicians to quickly move from other moisture density gauges to the Xplorer 3500 • Battery Saver and InteliCharge extend battery life keeping the gauge on the job instead of on the charger
• Menu options are easy to read and navigate
Density Assessment Tool
Can be used to uncover problems that occur during the paving process, including poor uniformity and significant variations in density, to help avoid premature failures such as road raveling, cracking and deterioration along joints.
Designed to monitor temperature segregation and easily provide accurate compliance reporting, all with real-time kinematic (RTK) positioning accuracy.
24 ASPHALT CONTRACTOR SEPTEMBER 2022 www.ForConstructionPros.com/Asphalt QUALITY CONTROL
• User interface depicts a density map, showing each square foot of rolled asphalt in a color representing density, and also provides a realtime numerical density reading displayed in the corner of the screen
Topcon Thermal Mapping System for Asphalt Paving
• A backlit LCD screen and special scroll functions allow operators to easily read the Xplorer’s two-line display during day or nighttime work
Available in two packages for select Volvo designs— Volvo IC and Volvo IC with Density Direct.
• Produces a density calculation that is accurate to within 1.5 percent of core sampling, providing a real-time reading of density values over 100 percent of the mat
SALES INQUIRIES: 866-971-2980 contact@mindsusa.com mindsusa.com
For the past 25 years, MINDS has built a reputation for user-friendly, advanced, customizable plant automation control systems. As of April 2022, we became part of the Astec family to add to their Rock to Road solution for asphalt road building. MINDS provides award-winning desktop software, mobile apps, and hardware for many applications: Drums, Batches, Combo/hybrid hot mix plants, Emulsion plants, Liquid Terminals. Silo load-out, Ticketing, and Cloud-based data management for the Rock to Road industry. Designed around real people. “The plant control system that MINDS designed for us has worked very well. The graphics depict the plant almost identically as built and are very easy to follow from the control room. Each value is shown with its position indicated by colours that make identifying issues, such as a stuck valve, extremely easy. The materials that we have produced with the system have been very consistent from the fi rst production run.”
Better Increaseddata.control. Higher profi ts. A decidedly human touch to plant automation.
Allen Hendricks, Vise President, Asphalt Divisions Manager Blythe Construction, Inc.
DESIGN, DETAILS, AND DURABILITY.
10106 SMITH ROAD, FORT WAYNE, IN 46809 | (260) 672-3004 | ALmix.com
• Can be installed on any make, model, or year asphalt paving machine.
• PaveScan MDM also turns our PaveScan RDM system into a powerful new Quality Control (QC) tool for asphalt density assessment
A cost-effective system that allows you to pave to a fixed thickness to the surface below. The dual sonic sensors, placed on each side of the screed, in conjunction with the slope sensor gives you precise control over slope and grade. This system will also make your machine Leica 3D ready regardless of manufacturer or year.
www.ForConstructionPros.com/22106006
InstroTek DensityNon-NuclearNoNukeAsphaltGauge
• Free NoNuke Mobile App can be downloaded from the Google Play Store and can capture data, display test results and create reports from any Android smartphone or tablet com/21138201www.ForConstructionPros.
28 ASPHALT CONTRACTOR SEPTEMBER 2022 www.ForConstructionPros.com/Asphalt QUALITY CONTROL
Mix Design Module
• Sun glare or inclement weather will almost never be a concern to this interface as the anti-glare coated screen is IP66 rated and connectors are MIL-SPEC IP67
• This correlation is used by PaveScan RDM to show accurate density variability within the asphalt mat
• Able to control elevation, screed endgate, and steering capability.
• Along with the reliability and precision of the GT1 system, FAMC provides training, installation, and 24-7 support to ensure success
• Screed control is made easy using the intuitive Danfoss interface that is designed with the operator in mind
www.ForConstructionPros.com/22159002PaveScan
• This degree of process control means bridge decks and longitudinal joints can now be rolled to specification in real-time
Offers system error warnings and advanced measurement technology which can result in a more accurate and precise density and percent compaction measurements.
• Systems include Moisture Presence Warning, Auto Surface-Roughness Correction and Gauge System Checks, which notify the user of potential gauge issues and help eliminate outside factors that can affect the gauge reading
• Systems are proudly made in the USA and replacement components are stocked to be available within hours
• PaveScan MDM creates a correlation between the dielectric value of the mix at different percent voids
FAMC GT1 Asphalt/RCC Paving System
• With one five-minute lab test, users can accurately reveal problems before any need for silo dumps or other costly remediation
Sensitive to subtle changes in aggregate, mix and moisture, comparing daily samples against approved mix designs makes any deviations apparent and helps to fix any problems before the mix is deployed in the field.
This is a dimension of Trimble you’ve never experienced. This is Dimensions+. We’re creating a space to connect better—with Trimble and with your industry on a personal level. So you can learn and collaborate to do your work, better. The future of engineering and construction has never been brighter. THE VENETIAN RESORT LAS VEGAS November 7–9, 2022 level.differentonConnecta
By using the proper equipment to measure asphalt density, contractors can help ensure the success of the roadway and keep record of their efforts
Non-nuclear asphalt density gauges have many advantages in that they are capable of providing density measurements very quickly and in a completely nondestructive manner, are easy to handle, and are not subject to complicated regulations. Systems Inc.
The Tech Tools for Measuring
TransTech
I n-place asphalt density is one of the most important measurements used to determine the quality of asphalt when paving a roadway. A small in-place density increase can potentially lead to a significant increase in the service life of asphalt pavements. The industry relies on compaction to increase pavement density and extend pavement life, but what tools are we using to make sure compaction is being done properly?
30 ASPHALT CONTRACTOR SEPTEMBER 2022 www.ForConstructionPros.com/Asphalt TECHNOLOGY MATTERS | QUALITY CONTROL SPECIAL REPORT JESSICA LOMBARDO, EDITOR-IN-CHIEF
ASPHALTDENSITY
Traditionally,tools.pavement quality was measured by coring the asphalt that is placed and taking those samples back to a lab for evaluation. Not only is that timeconsuming but it also impacts the quality of the pavement. Non-destructive testing (NDT) methods on the other hand offer a good alternative to traditional tests; they reduce coring only for calibration and provide immediate test results.
• Quick results. Most nuclear gauges allow both one and four minute readings. These are much quicker than typical densities obtained from cores which could take from several days to several weeks.
• Virtually non-destructive. Used in the backscatter mode, the nuclear density gauge is entirely non-destructive. Used in the direct mode, the gauge only requires a small penetration into the finished mat less than 1-in. in diameter and about 2-in. deep.
› www.ForConstructionPros.com/Asphalt SEPTEMBER 2022 ASPHALT CONTRACTOR 31
There are three main types of equip ment available to measure density out on the jobsite with a NDT method; nuclear gauges, non-nuclear gauges and ground penetrating radar. There are benefits and limitations to each of these methods and it will be up to your crews comfort level with each technology, and the bid specifications, to determine what you should use.
There are two different modes of testing that a nuclear gauge can per form: Direct Transmission Mode and Backscatter mode.
According to the Environmental Protection Agency (EPA), the use of nuclear gauges is a type of industrial radiography. Radiography is the use of radiation to produce an image on photo graphic film. This is similar to the way a medical x-ray uses radiation to produce images of bones. A nuclear density gauge measures the density of in-place hot mix asphalt (HMA) using gamma radiation. Gam ma rays are emitted from the source and interact with electrons in the material. By calculating the percentage of gamma rays returned to the source, the gauge can quickly and accurately measure the density and inner structure of the test material.Anuclear density gauge offers the following key advantages over destruc tive density measurement (cores):
While in direct transmission mode, the sensor measures the amount of gam ma radiation given off by the source rod. The less radiation detected by the sensor the higher the material’s density. This is why it is important to select the correct depth of penetration of the source rod, as a more shallow depth will allow for more radiation to reach the sensor than if it were deeper in the same material.
Quality control on the ground is still paramount to the success of the job. In most states, contractors are paid incen tive or disincentive (financial penalties), based on the final, in-place density of asphalt on the roadway. In extreme cases of low density, contractors may be required to remove and replace the new asphalt if it does not meet density speci fications. Make sure you're obtaining and tracking these numbers for success with the right
NUCLEAR ASPHALT DENSITY GAUGES
• Portability. One person can easily transport a typical nuclear density gauge.
PaveScan RDM is an asphalt density measurement system that provides highly accurate compaction information in real-time. With PaveScan RDM, you can quickly assess the quality of pavement during the paving process, including poor uniformity and significant variations in density. By detecting these problems, PaveScan RDM helps avoid such premature failures as road raveling, cracking and deterioration along joints. Geophysical Survey Systems, Inc
Ground penetrating radar (GPR) works by sending a tiny pulse of energy into a material and recording the strength and the time required for the return of any reflected signal. A series of pulses over a single area make up what is called a scan. Reflections are produced whenever the energy pulse enters into a material with different electrical conduction properties or dielectric per mittivity from the material it left. The strength, or amplitude, of the reflection is determined by the contrast in the dielectric constants and conductivities of the two materials.
GROUND PENETRATING RADAR TO MEASURE ASPHALT DENSITY
QUALITY CONTROL SPECIAL REPORT
NON-NUCLEAR ASPHALT DENSITY GAUGES
Recent research has shown that GPR has the capability to conduct a 100% scan of the new pavement and identify density deficiencies. The method also provides significantly more data than traditional density tests and calibrated GPR dielectric values correlate better with core density values than standard nuclear and non-nuclear density gauges.
The collection process can also provide a continuous profile of existing road conditions. GPR can utilize highspeed data collection at speeds up to 50 mph, thus requiring less traffic control and resulting in greater safety when compared to the handheld devices. Results for these devices have shown a very strong correlation between the GPR-based air void measurements and the laboratory measurements, however there are also limitations with potential interference due to ambient radio noise and antenna Achievingvariations.andmeasuring asphalt density will continue to be an ongoing quest for perfection. No matter what method of density verification you choose, increased testing of asphalt densities will result in a higher quality pavement, allow the pavement contractors to rapidly verify that the pavement meets the specified density, reduce over-compaction of the pavement and better optimize the paving process. For more information visit http://asphalt.com/ msfr6p
Just like nuclear gauges, non-nuclear devices are used in a similar way to measure density - only without the radi ation component. With increasing regu lations and cost associated with using nuclear source material, non-nuclear density gauges are rising in popularity. Non-nuclear density gauges estimate pavement density by inferring the rela tive proportion of air-filled voids in the asphalt from a measure of dielectric per mittivity. What this means is that these devices operate based on the principles of electrical impedance for a current passing through the HMA material. These devices have many advantages in that they are capable of providing den sity measurements very quickly and in a completely non-destructive manner, are easy to handle, and are not subject to complicated regulations. In general, the non-nuclear devices have been advertised to provide sig nificant savings as compared to a nuclear gauge. The initial cost of the non-nuclear device is similar or slightly less than a nuclear gauge (depending on the model), but the majority of the sav ings are generated through the elimina tion of costs associated with licensing, training and maintenance. Some concerns have been raised around the use of non-nuclear gauges however. Researchers have voiced com mon themes including 1) insensitivity to actual changes in density, 2) poor cor relations with other measures of density, and 3) the need for a better calibration procedure. The current consensus appears to be that while the non-nuclear gauges offer a great number of practical advantages, their results can be affected by a number of factors that may need to be addressed with future models.
A nuclear density gauge measures the density of in-place hot mix asphalt (HMA) using gamma radiation. Gamma rays are emitted from the source and interact with electrons in the material. By calculating the percentage of gamma rays returned to the source, the gauge can quickly and accurately measure the density and inner structure of the test material.
› 32 ASPHALT CONTRACTOR SEPTEMBER 2022 www.ForConstructionPros.com/Asphalt TECHNOLOGY MATTERS |
GPR technology has been most successfully used to determine pavement layer thickness, but has also been used to identify subsurface voids, assist with forensic investigations, locate utilities and reinforcement, evaluate degradation of bridge decks and estimate volumetric properties of asphalt pavements.
In backscatter mode, the source is in the same plane as the sensor. The shielding within the gauge means that radiation given off the source must first be deflected by the material before reaching the sensor. This means that the more radiation detected by the sen sor the higher the material’s density. While these gauges have been widely used in the past, they use radioactive materials that may be hazardous to the health of the user unless proper precau tions are taken. Users of this gauge must become familiar with the applica ble safety procedures and governmental regulations. Some agencies require the use of personal monitoring devices such as a thermoluminescent dosimeter or film badge. There are also permits and training courses required for operation of thisEffectiveequipment.instructions, together with routine safety procedures such as source leak tests, recording and evaluation of personal monitoring device data, etc., are a recommended part of the opera tion and storage of this gauge.
From innovative designs to Caterpillar dealer service and support, Weiler is paving the way to successfor 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 screedsare engineered with innovative features to increase productivity while reducing operating costs. Weiler equipment is sold and serviced exclusively at Caterpillar dealers throughout North America.
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What To Consider Before You Buy NOTES
Batch style plants may seem to be at a disadvantage, but they still offer one thing that could very well be the decid ing factor right at the top: Flexibility in production, especially for small batch sizes. For the contractor who needs to satisfy multiple customers or different projects on a day-to-day or, especially, Astec Industries
PRODUCTION
When it comes to the continuous, also called “drum” mixers, there are three common variant configurations typically available on the market. Each relates to the way in which the aggre gates are introduced in relation to the heat source and air flow:
• Type of job and production schedule that must be kept
• Local and regional industry regulation • Short term and long term investment costs (equipment, maintenance, etc.)
The oldest and most well-known style of asphalt plant is the batch con figuration. Iterations of which were first used as far back as the turn of the 20th century and the most common elements of which are nearly unchanged. Multiple large cold aggregate storage bins hold sorted material based on its size and are drawn together into the drying drums, heated up, passed through multiple screens to re-sort them and stored in a tower of hot aggregate bins. According to the mix, the various hot aggregates are weighed alongside the required amount of sand and other fillers, as well as the binder. One batch at a time, all these weighed materials are mixed together, passed into storage and eventually transported away.
• The older continuous plants are parallel flow drum mixers where the materials proceed in the same direction as the hot gases.
Since using search engines on the internet can sometimes provide differ ent results every time you use them, we spoke with industry experts to get solid answers, along with pros and cons of each.
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Investing in new an asphalt plant? These tips can help you find the best match T here’s nothing more important than having the right equipment for the job you’re trying to do. But what you really need is not always obvious, and neither is how to decide. In regards to the question of which type of asphalt plant you need, it might seem there are only two answers: batch or drum (continuous). However, there’s no perfect, one size fits all solution, and sorting out which is best for you and your business depends on a few things:
| BRANDON NOEL, EDITOR
• Individual market characteristics (geography, tradition, etc)
BATCH VS. DRUM:
Continuous plants operate in virtu ally the exact same manner and process, except that they bypass the mixing tower and screens, instead opting for a counterflow mixer. The sized cold aggregate is sent to the drying drums according to the design mix, heated, blended with non-segregated RAP, fill ers and the binder all in one non-stop process, that is mixed together continu ously and then leaves the drum chamber and is hauled to a job site via truck.
• A later variant is the counterflow drum mixer which consists of either a counterflow dryer and a separate external mixer or an elongated combination dryer/mixer drum with the burner head placed part way into the drum to allow mixing with liquid asphalt to occur behind the burner, out of the gas stream. This reduces hydrocarbon emissions and increases fuel efficiency over the parallel flow drum mixer.
• The most technologically advanced version of is a double barrel drum mixer, which provides a very uniform dryer in the double barrel drum mixer gives the highest available thermal efficiency.
JOB TYPES PRODUCTIONANDSCHEDULE
THE BASIC DESIGN Before we launch into the first factor, let’s briefly establish a minimum base line of understanding for the different models of asphalt plants available, as well as their basic designs and function.
KEEPING BATCH PLANTS PROFITABLE – One of the quickest ways to get a return on investment! ADD 30% TO 40% RAP TO YOUR MIXES* EXCLUSIVE RAP PAK SCALE SYSTEM allows metered flow of rap into mixer UNIQUE VAPOR RECOVERY SYSTEM allows plant to run smooth and remove steam vapors MORE BATCH PLANT RAP SYSTEMS than any other manufacturer BROUGHT TO YOU BY YOUR ASPHALT PLANT “HOME REMODELER”... Meeker Equipment. *This is specific to brand of plant BRING YOUR BATCH PLANT INTO THE 21ST CENTURY Contact Information Meeker Equipment Headquarters 4381 Front Mountain Road Belleville, PA 17004 Phone: (717) 667-6000 Fax: (717) 935-2389 E-mail: info@meekerequipment.com Your Preferred Asphalt Equipment Resource The Meeker Family Call us toll free! (888) www.meekerequipment.com333-0323 RAP-PAK SYSTEM
MARKET CHARACTERISTICS
According to experts at Astec Industries, capital investments for con tinuous plants are lower for equivalent production rates and RAP percentages, compared to similar batch systems. This doesn’t mean that their dollar amount prices are always less, but that when you take into account those factors, you’re getting more value per ton of mix pro duced. So, in cases where the budget is ultimately very tight, a batch system may still win out. Also, repair and maintenance costs tend to be lower on the drum mixing plants due to lower “plant iron,” which receives less wear and tear over time due to a reduction in direct contact with the hotThereaggregate.area lot of advantages to the continuous/drum mixing plants, but no one answer to fit every contractor in every situation. The final choice will always be about how some best “fits” your needs, because there’s no way to account for everything, but you can be confident you made the most informed decision. For more information visit http://asphalt.com/2wp4nr
The types of job and customer you may want to reach are only one part of the equation. Nothing exists in a vacuum. Because of that, it is vital to your suc cess in plant selection to take stock and examine the specific market characteris tics where you’re going to do business. We already know that continuous mixers are more well suited for the types of job that require vast amounts of material, but that applies here, as well. Your market may deal in these types of job at a higher percentage of available contracts, more so than in others. Continuous plants are, also, more adept when the geography of your area requires greater portability, easily relocated closer to current job sites, like the western part of the country where population concentration is less dense. Economically, the competition in the hot mix/warm mix asphalt market might be much tighter, with more producers jockeying for contracts, even still, the drum plant is the way to go. Often times, though not in every case, those who can run the most RAP wins. We will address RAP more in the next section, but, suffice to say, the abil ity to better process high amounts of reclaimed asphalt pavement is key to beingBatchcompetitive.planttechnology can some times dominate in an area based on tra dition, and understanding your market is the only way to know. Sometimes this can express itself as “the way it’s always been done,” but in other cases it can be economic or experience driven. Beyond that, there are certainly markets that produce a higher demand for smaller quantities of constantly changing mixtures, so it is important to take a proper inventory and do your due diligence.
The fastest growing and changing area of regulation is in regards to sustainability and the environment. The most common way this effects your decision concerns reclaimed asphalt pavement (RAP). There are places where RAP use is required, and the percentages have to be measured accurately.Bothstyles of plant can utilize RAP and incorporate it with virgin aggregate, but the drum design does so simply and efficiently. A batch facility needs a separate dryer and exhaust system for its RAP content. Continuous systems are much more RAP “friendly” in design. They combine the sized aggregates and RAP once in a single chamber along with the binders, all without interruption. RAP usage is not the only environ mental concern, however, there are noise ordinances, air quality, odor, emission standards, as well as thermal efficiency standards that must all be taken into account. It’s important to research these thoroughly. Where they come into play, once again, the continuous/drum plants have the bottom-line edge. Ton-for-ton, drum mixers can produce the same amount of mix that a batch plan does for less energy.
REGULATION
36 ASPHALT CONTRACTOR SEPTEMBER 2022 www.ForConstructionPros.com/Asphalt
INVESTMENT COSTS
The government can often be the greatest source of unexpected challenges in your process of selecting a new asphalt plant. Why? The easiest answer is that they make the rules. The more nuanced answer is that those rules vary, sometimes widely, between municipalities (if you’re working in just one state) and, especially, across state lines (if you’re a multi-state operation).
Provided by Astec Industries
within the same day, batch plants are extremely adaptable. It’s fairly easy for an operator to stop, switch the mixture to a new configuration, while maintain ing a high quality end product. Smaller surfacing jobs spread out over an area can often reflect this need. By comparison, the continuous plants are well suited for environ ments where they need to produce large quantities of consistent mix, either immediately or in the nearLongfuture.stretches of highway or other high surface area jobs demand a near con stant flow of consistent and workable material. A clear drawback to batch plants emerges here. If your main concern isn’t flexibility, but quantity and timeframe, the continuous mixers dominate. Just like their name implies, batch plants obviously work in phases of interrupted work, starting at ~80/tons per hour (tph) and topping out at ~200/tph. Their counterparts have no interruption in flow, and can double that speed to start at approximately ~400/tph and can operate, in some cases, as high as ~800/tph.
PRODUCTION NOTES
This brings us to our final factor. You might wonder why we saved the costs as the final section to cover, but the reason is rather simple. It doesn’t really matter how much the equipment costs, it doesn’t matter how inexpensive it is at face-value, if it doesn’t do the job you need it to do, and/or it’s going to be a drain on resources down the road.
There are many factors you need to consider before choosing a roller for your crew and jobsite application.
• Budget • Size of area • Site layout (open area or confined areas)
38 ASPHALT CONTRACTOR SEPTEMBER 2022 www.ForConstructionPros.com/Asphalt JOBSITE INNOVATIONS | JESSICA LOMBARDO, EDITOR-IN-CHIEF
Selecting the proper roller for the application, and using it correctly, will ensure optimal surface compaction on your construction projects
SOIL COMPACTION When a new road or structure is being built, the foundation will need to be compacted before final construction can begin. The new surface is often loose and unstable, and needs to be compact ed before structures are built upon it.
T here are many different types and styles of rollers available for compaction, but not every roller is right for every job. Factors that you should consider when choosing the right roller for your job include:
There are two main types of soil compactors to accomplish this task.
• Transportation to and from the job site Take a look at the types of rollers available and decide when, where and how to use them on your projects.
• Type of material that will be compacted (dirt, sand, gravel, asphalt, etc.)
Sheepsfoot or Padfoot Drum: This style of roller has many raised lugs called "feet" on the roller drum. The feet provide a tamping action and change the surface area of the roller What
Smooth Drum: These rollers consist of large, smooth steel drums that use a combination of impact, vibration and static pressure to compact materials such as sand, ballast and gravel. They are the most effective in compacting silty or sandy soils with the fewest passes.
IShouldUse? ROLLER
ASPHALT COMPACTION
Static Rollers: Static rollers are used to compact many different types of material, but are used on some jobsites for asphalt compaction. Static rollers are sometimes seen as the final roller in the paving train, used for finish rolling. The primary purpose of finish rolling is to obtain the last little bit of density and to remove the marks, if any, left by the first and second rollers. When needed, finish rolling should be accomplished with mix surface temperature above 175° F.
Vibratory Rollers: Vibratory rollers are almost identical to smooth wheel rollers except they feature a specialized vibrating component. As the roller compacts and flattens the surface, it will vibrate and increase the compactive effort. Double drum vibratory rollers operate close behind the paver to obtain the initial compactive effort while the mix is still hot.
However, the lack of tires results in less stability and traction than single drum versions.Three-wheeled or single drum rollers have a drum in the front and specialized tires in the back, allowing them to roll over almost any surface.
Smooth Drum Rollers: This style of roller is most commonly used for asphalt compaction but varying styles and technologies can make them more suited for different applications.
drum, which enables the drum to apply more pressure per square inch. The roller operator can increase the pressure on the feet as needed by filling the drum with wet sand and other materials. Typically sheepsfoot rollers are used with silty or heavy clay or cohesive soil surfaces.
Single or Double Drum Style: Soil compaction rollers can either be tandem (double drum) or single (threewheeled) depending on the project needs.Tandem rollers have drums in both the front and the back for additional power and faster compaction times.
40 ASPHALT CONTRACTOR SEPTEMBER 2022 www.ForConstructionPros.com/Asphalt JOBSITE INNOVATIONS
Different styles of asphalt rollers are used during different phases of compaction of the pavement.
Many times asphalt roadways are put down over soil and there are many specialized rollers to use during different phases of asphalt compaction. These can come in single drum configurations, but you usually see tandem rollers operating during asphalt compaction.
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COMPACTION FOR ALL SIZES
Oscillation is a technology developed to help increase compactive effort even further. With these vibration systems, the drum stays in constant contact with the material allowing the roller to deliver dynamic compaction energy to the asphalt layer as an alternative to tra ditional vibration. Instead of vibrating the pavement up and down, oscillating rollers stay in contact with the surface, and there are no repeated impacts to the surface for compaction. This provides more compaction force than static rolling but less force than traditional vibration. Tandem rollers with one oscillation drum and one vibrating drum achieve at least the same degree of compaction as double vibrating drum rollers, but with fewer passes.These types of rollers are suited for compacting thin lifts, tender mixes, joints, bridge decks or when working near structures. Oscillation is also useful for joint compaction as most asphalt contractors have to deal with hot and cold lanes when they pave.
Oscillating Rollers:
These compactors are mainly used as one of the last steps for compacting both soil for road work and asphalt for sealingWhenpurposes.apneumatic tire roller is used as an intermediate roller, it is necessary to keep the tires at the same tempera ture as the mat being compacted — otherwise the rubber tires will pick up some of the mix from the mat. So when using a pneumatic roller, don’t allow the roller to sit and wait for long periods of time as the tires will cool.
Rammers are handheld and are best used for small jobs in tight areas. Due to their comparatively lightweight, they can be hand or machine operated, which allows deep vibratory compaction.
42 ASPHALT CONTRACTOR SEPTEMBER 2022 www.ForConstructionPros.com/Asphalt JOBSITE INNOVATIONS
This “breakdown” rolling, com pleted with a vibratory roller, should be completed before the surface tempera ture of the mix falls below 240º F. The breakdown roller should be operated at the highest possible frequency level available for the particular make and model of roller and at an amplitude set ting that is dependent on the thickness of the asphalt mat being placed.
Intermediate rolling is usually done with a vibratory roller as well and must be accomplished immediately after the initial rolling is completed.
Be sure to always properly train your operators to ensure they are making the most of their work and compacting each surface efficiently to achieve density. Under compaction can cause decreased strength, reduced fatigue life, accelerated aging/decreased durability, rutting, raveling and moisture damage. While over-compaction can affect the integrity of the material and damage the roller. For more information visit http://asphalt.com/z8shne
Vibratory plate compactors are used to increase the density of a variety of soils and fill any voids. Because they are walk-behind compactors and are smaller in size, these compactors are best used for tight spaces where large equipment can’t
Pneumatic Rollers: Pneumatic rollers use smooth pneumatic-tired wheels that overlap instead of steel drums for compaction. Pneumatic rollers use static pressure in both vertical and horizontal directions to reduce air voids in material which creates compaction. This is often referred to as kneading or manipulations and helps bring compaction to materials differently than traditional static rollers or vibratory
Trenchreach.rollers, also called multipur pose compactors, perform well in cohe sive soil types that can be very difficult to compact (such as clay). Trench rollers can compact high moisture content in clays by utilizing powerful compaction energy and the kneading effect from their padfoot drums. Trench rollers get their name because they are often used to compact the soil in trenches. Trench rollers are popular because they can be maneuvered by using a remote control - the operator does not stand or sit on the machine while it Compactionmoves. is an important part of any project. Understanding the benefits of each roller can make choosing the right one for your project more efficient.
Road rollers aren’t the only construction tools used for compaction work. Other types of compaction equipment include the rammer and the vibratory plate.
Asset owners have more pavements to maintain than money to do so, which is why the industry needs to continually deploy proper techniquespreservation-onelayer at a time - to protect these investments O ver the years, the asphalt indus try has been working hard to improve the longevity of the pavements we drive on. We have acknowledged the fact that the right treatment, on the right pavement, at the right time is much more cost-effective than removing and replacing an asset once it's beyond repair. We as an indus try know this, the smart asset owners know this, and yet many pavements are left to deteriorate while new roads and other needs take priority.
"Asset owners have more pavements in need of preservation than money to preserve them," John Hickey, execu tive director at the Asphalt Pavement Association of Oregon said. "Manag ers set short-term budgets in almost every sector – and that has permeated the public infrastructure sector even though the considerations driving how we budget for infrastructure necessitate a long-term perspective. Even if pave ment preservation budgets initially are sufficient, funding often gets diverted to what is perceived as more pressing needs. Maybe it’s a new pedestrian bridge or light rail system – regardless of the benefit those new assets may confer, they are often paid for out of existing infrastructure funding without consid eration for the long-term effects on the overall system. We tell our kids they can’t get new things until they learn to take care of what they have, but we don’t live by that rule when it comes to publicAndinfrastructure."theproblemisn't getting any better. U.S. roads received a D grade in ASCE's 2021 Report Card, retaining the D they got back in 2017. Breaking down the nation's roads into four grading categories, 41.9 percent are categorized as “good,” 15.6 percent as “fair,” 22.6 percent as “mediocre” and 20.1 percent as “poor.”Sowhy has there been no improve ment? The simple answer is perception. "Pavements show deterioration relatively slowly and it is easy to think
How Can We Improve Pavement
44 ASPHALT CONTRACTOR SEPTEMBER 2022 www.ForConstructionPros.com/Asphalt PRESERVATION UPDATE | JESSICA LOMBARDO, EDITOR-IN-CHIEF
FIX IT FIRST
www.ForConstructionPros.com/Asphalt SEPTEMBER 2022 ASPHALT CONTRACTOR 45
Typically, a thin asphalt overlay is a surface mix of 1.5 inches or less placed on a well prepared surface. they will last another season or two, which will give us time to figure out a funding," Hickey says. "The obvious problem is that the newly added infrastructure often costs more than we initially estimate and it also requires preservation and maintenance. Pave ment managers are in a constant battle advocating for pavement preservation funding in a system where the people who allocate the dollars want to show constituents something shiny and new." In order to make impactful change on the lifespan of our pave ments, the industry needs to continually push a long-term preser vation strategy and deploy a "fix it first" mentality when it comes to our roadways.
According to the National Center for Pavement Preservation, there are nearly 4 million miles of paved public roads in the United States, valued at $1.75 trillion. The roads and other pavements in America are a huge investment and are vital for moving people and goods in an efficient manner. Yet we let them fall into a state of disrepair.Unfortunately, there is very little new funding in the Infrastruc ture Investment & Jobs Act (IIJA) specifically dedicated to repair and no new requirements on highway monies for prioritizing repair
If inflation wasn’t bad enough, as pavement conditions decline, pavement preservation costs increase. So what are the solutions to keep up with continual pavement decline? In Oregon, it's Thinlays. "Thinlays are the most beneficial pavement preservation technique," Hickey says. "Added structure and improved smoothness are probably the two Thinlay benefits that are most relevant since we need pavements to support increased loading. Plus improved smoothness can result in a significant reduction in greenhouse gas emissions from vehicles." Thin asphalt overlays are a reliable way to restore smoothness and drivability to an aging pavement, while correcting distresses and even adding structural value in some instances. Typically, they are a thin asphalt overlay of 1.5 inches or less placed on a well prepared surface. The pavement being overlaid may be milled or unmilled, but it should not show signs of structural distress requiring a more extensive rehabilitation. The decision to apply a thin overlay to an existing pavement surface should be made only after a careful evaluation of the pavement condition and the elimination of the need to perform a structural rehabilitation. Careful consideration also needs to be made for the entire pavement maintenance program, otherwise costs can creep up on "Theyou. primary challenge in implementing a Thinlay pavement preservation program is the fact that they often have a higher initial cost and it is hard for pavement managers to overcome the budgeting hurdles described above," Hickey says. "Marion County in Oregon is an example of an agency that has had success implementing a Thinlay program, which has improved pavement conditions and set the County up for lower pavement preservation costs over the long-term."
One of the biggest benefits of asphalt pavements is their ability to be built upon, year over year, while maintaining structural"Perpetualstrength.Pavement" is the name coined to describe a layered, flexible pavement design and construction concept. Application of the concept pro duces a deep-strength asphalt pavement that can resist structural fatigue distress for a long time (at least 50 years) and, thus, results in a long-lived pavement. These long-lasting structural bases can be economically maintained by replac ing just the surface, never needing total removal and replacement.
Perpetual pavements are designed to develop distresses from the top-down, rather than from the bottom-up. This preserves the integrity of the bottom layers of the pavement structure, Chris Poynter/Facebook
46 ASPHALT CONTRACTOR SEPTEMBER 2022 www.ForConstructionPros.com/Asphalt PRESERVATION UPDATE on roads and bridges. Overall the law doubled down on the practice of giving states immense flexibility with the bulk of their money in hopes that they use that flexibility to prioritize repair. And states should consider a "fix it first" approach to using these funds.
"In 2017, the Oregon Legislature passed a major infrastructure funding bill that had multiple funding mecha nisms to adequately pay for, among other things, improving bridge seismic resiliency and preserving pavements," Hickey says. "But, the final bill included earmark projects in primarily urban areas, which are notorious for taking a long time and being expensive." As inflation continues to be a challenge for State DOTs, if they truly want to do more with less money, preservation is the answer.
PERPETUAL PAVEMENTSONE INCH AT A TIME
FINDING LASTING SOLUTIONS DESPITE RISING COSTS
48 ASPHALT CONTRACTOR SEPTEMBER 2022 www.ForConstructionPros.com/Asphalt PRESERVATION UPDATE and confines damage to the top layer where it can be easily managed without requiring full-depth repairs or major rehabilitation. In fact, we now know that asphalt pavements can be designed to never develop bottom-up fatigue-related distress, regardless of how many loads are applied to the pavement, and how heavy those loads may be. By confining damage to the top layer of the pavement, maintenance and rehabilitation costs over the life of a perpetual pavement are significantly reduced. And given the fact that the lower layers of pavement are preserved, the structural life of a perpetual pavement is on the order of 50 years or more, rather than the 20-year life expectancy that has traditionally been theThestandard.costsavings and increased life expectancy are huge benefits that smaller agencies and local governments can’t afford to ignore. Both high-volume highways and interstates and lowvolume county roads and city streets can reap the benefits of perpetual pavement too, even if those structures were not originally designed or built to perpetual specifications. Perpetual pavement can, in fact, be achieved by increasing pavement thickness “one inch of asphalt at aFortime.”local agencies with limited budgets, that extra inch of asphalt will pay for itself many times over by reducing long-term maintenance costs and doubling the life expectancy of the road itself. For more information visit http://asphalt.com/nw5x9q Pre-cut packing sets proven within the Asphalt Industry. Viking®, Roper, Rotan, etc. Call Scott at www.rainsflo.com1-800-231-4209 Stop your pumps from leaking! PUMP PACKING Research. Compare. Communicate. on the industry’s latest leading Equipment. Technology. Work Wear To get the full experience, visit: IRONPROS.COM
CLASSIFIEDS www.ForConstructionPros.com/Asphalt SEPTEMBER 2022 ASPHALT CONTRACTOR 49
GETTING TO THE TABLE
Does A Labor Strike in Chicago Signal Larger Trends?
The real question the situation in Chicago between the Local 150 and the CAAPA represents to our industry: Is it on the brink of what other major industries across the United States are going through?
And in what appeared to be an effort to strong arm the union into ratifying the deal, it came with a specific provision.
Finally, on July 26, the member of the IUOE voted unanimously to accept a new agreement. They earned a 16% wage increase over the next 3 years, amongst other benefits and adjustments.
An enormous win for the union. Yes, strikes like these can be a temporary inconvenience to the local area, but the history of organized labor in the U.S. is filled with brave men and women risk ing their livelihoods to make a better future for their families.
It's no secret companies like Apple, Amazon, Starbucks, and recently, Chipotle and Target are all experiencing new movements of collective action. Many of these mega-corporations spend millions in anti-union campaigns, while also using "labor shortages" as reasons for store closings, limited hours of operation or poor customer service. What we must face, however, is a new laborThereality.COVID-19 pandemic sparked a fresh awareness within the labor force, and the surge in demand from all areas of industry highlights labor's value and importance. Business owners have to wrestle with the tension between the need for more workers, while the available workforce, recognizing this greater value, holds out for better wages, benefits and working conditions. In the wake of the last recession in 2008, the American laborer felt lucky to have somewhere to work at all. Benefits were a bonus. As things have a tendency to do, the pendulum has swung in the otherEverydirection.American in the nation is feel ing the burden of rising costs and creep ing inflation. Bare-bones wage increases are effectively pay-cuts, when the costs of living skyrocket, as they have over the last two years. These economic forces are felt by ownership and management too, of course, but the lion's share of their effects historically get passed down to the bottom of the chain. For now, it seems, the American worker fights for a more well distributed curve. For more information visit http://asphalt.com/kk3fi1
THE RISE OF NEW LABOR
As a result of these and other delays, the union filed suit with the National Labor Relations Board (NLRB) charging the CAAPA with "Refusal to Bargain/Bad Faith Bargaining (including surface bargaining/direct dealing)" on July 6, a month into the strike.
FALLOUT AND ULTIMATUMS
The CAAPA's response came on the evening of Friday, July 15, when they submitted a "final offer" that union president James Sweeney described as failing to address previously stated priorities and that it, "contained numerous significant deviations from important language changes that both sides agreed to during negotiations."
At the start, it appeared that the strike might be resolved somewhat quickly. The Northern Illinois Material Produc ers Association (NIMPA) came to the bargaining table and reached a new agreement for a contract in only four days. The negotiations with the CAAPA were not as straight forward. Union officials told Asphalt Contractor that after more than a dozen negotiation attempts, no deal was reached. Union communications director Ed Maher said as many as eight days passed in between sessions, a sign the union interpreted as an unwillingness to come to terms.
Will the asphalt industry be the next to face a labor reckoning? What unfolded in Chicago might be a sign of things to come T he local chapter of the International Union of Operating Engineers (IUOE), Chicago 150, went on strike at the beginning of June. It turned into a two month stand-off. Municipal projects were delayed or put on hold entirely. This came in response to what the union described as "unfair labor practices" by the Chicago Area Aggregate Producers Association (CAAPA), a consortium made up of the three separate companies Lehigh Hanson, Vulcan Materials and Lafarge Holcim, which collectively operate 35 quarries across the state of Illinois.
Were it not to be signed by the end of the day, July 17, the companies involved would withdraw all owed backpay from the striking workers. In a letter posted to the union's website, Sweeney said, "This new offer is in no condition to be voted on, but management is attempting to use retroactive pay as leverage to force members to accept it."
AdobeStock_285423304 50 ASPHALT CONTRACTOR SEPTEMBER 2022 www.ForConstructionPros.com/Asphalt THE LAST EXIT | BRANDON NOEL, EDITOR
