Ammann is introducing the ACP 300 ContiHRT Asphalt-Mixing Plant to the North American market. This continuous plant is capable of producing mix consisting of more than 60 percent RAP. Ammann says that this rate is unrivalled by comparable competitive products In North America.
Recycled aggregates for roads
Some Ontario municipalities are underutilizing or avoiding its use, but industry groups are hoping to change that
Municipalities are responsible for the care and maintenance of vast amounts of roads, from lanes to highways. When those roads are repaired or replaced, there's the potential to generate a significant amount of aggregate material - concrete and asphalt removed from the surface that must be dealt with.
Today's roadbuilding contractors are taking this material and recycling it more than ever before. However, research is showing that some municipalities are far better than others when it comes to using this type of aggregate in their roads - and some are far behind.
A study conducted on behalf of the Toronto and Area Road Builders Association (TARBA) has shown that Ontario municipalities are all over the place in how much recycled material they use for road construction, with some almost entirely eschewing recycled aggregate - a greener alternative to new material - on their projects.
"There's not a huge commitment to recycling aggregate; in fact, there's a reticence to use the product," said Rob Bradford, executive director of TARBA. "I think it stems from a fear of trying something new, thinking that something might happen - sticking with virgin aggregate has less potential for risk."
According to a study by a researcher from the University of Western Ontario, the allowable use of recycled aggregate across the region ranges from significant amounts in some large areas like Toronto, down to nearly none in Mississauga. Instead, according to Bradford, millions of tonnes of material are either sent to the landfill or into stockpiles. At the same time, those low rates mean that new aggregate must be trucked significant distances, burning fuel and generating greenhouse gases, and used aggregate ends up in the waste stream.
Recycled aggregate means more sustainable infrastructure overall, Bradford noted.
"They should be doing a much better job, a much greener job, of recycling asphalt and concrete. They need to be a part of the solution, rather than part of the problem," he said.
The study looked at construction practices in five regional municipalities and 15 single or lower-tier municipalities across Ontario, conducting a survey regarding approved uses of recycled aggregate for a variety of situations. Results of the survey showed a broad range of standards in both road construction and subdivision work.
For example, the collected responses showed that some 50 percent of surveyed municipalities do not allow the use of recycled concrete and asphalt as 55mm aggregate for granular base and subbase for pavement. Forty percent allow partial use, and 10 percent allow for full use. The municipalities are even more restrictive when it comes to 19mm aggregate for granular pavement, with 55 percent not allowing recycled material, 35 percent okay with partial use and 10 percent allowing full use.
Ready-mix concrete is the most restrictive use for these municipalities, with 80 percent not allowing recycled aggregate use and 20 percent allowing partial use. On the other side, 50 percent of municipalities are okay with recycled aggregate being used for engineered fill, and 90 percent allow partial or full use for construction access roads, bicycle paths and similar construction.
Among individual cities, Toronto - the highest scoring municipality in the survey - allows recycled material for use in everything but engineered fill, stabilization of soft subgrades, Portland cement ready mix, and concrete for sidewalks, curbs and other uses within subdivisions. Some other uses are restricted, but for the most part full use is allowed.
On the opposite end of the spectrum is Mississauga, which allows full use of recycled aggregate for construction access roads, bicycle paths and similar features - and only that. No other recycled product is allowed in any projects.
Recycled aggregate quality has greatly improved
Bradford suggested that disapproval of recycled materials in municipal policy may come from lingering concerns about quality - something that has improved greatly with the growth of the aggregates recycling industry.
"You have to ensure the quality of recycled aggregate - it has to be an engineered quality, it has to be properly processed and tested. Like any material, going back 10 or 15 years there are probably a couple of things that have stuck in peoples' minds from when it was used in the infancy of the industry where it didn't work out because quality control wasn't what it should have been," Bradford said. "If you're a consultant working for a municipality, or you're an engineer in charge of the roads department, that kind of decision is a risk - so, you play it safe and just specify virgin aggregate."
That trend of specifying new material creates many issues for contractors who have to manage the aggregate removed from jobsites, Bradford noted.
"The owner just writes off ownership in the contract, so the contractor has to find a place to get rid of anything that comes off that project. Now, if they produce recycled aggregate themselves, they will take it to their yard and pile it up. If they don't, they have to find someone who does produce it. . . or dispose of it in the landfill," he said. "The point we're reaching now is. . . [that] there's so much of the stuff now, they will have to start charging to take it in, and second, they're going to have to turn people away."
TARBA is encouraging municipalities to find ways of using more recycled asphalt in their construction work; one example Bradford pointed to is the Ontario Ministry of Transportation, which currently uses 20 percent recycled materials in its highway construction work.
"They've been very forthcoming about their commitment to reusing recycled aggregate. . . they're using tens of millions of tons a year - if you can put this material under highways that carry the amount of traffic that ours carry, then surely there's an argument for using it under a municipal street," Bradford said.
Only about seven percent of the aggregates used in Ontario currently come from recycled sources, as opposed to European countries which use up to 20 percent recycled product, Bradford noted. That's a goal he said TARBA would like to see municipalities aim for.
"We are encouraging municipalities to use the Ministry of Transportation model. If municipalities have the same attitude and the same practices as the MTO, we as a province would be recycling close to the levels that we should be, and which are supportable from a technical standpoint," Bradford said. "There are Ontario provincial standards that look into the science behind this - what percentage of recycled aggregate you can use as a base course, or as a surface course, or on a bicycle trail. This has all been well figured out. We want municipalities to recycle the maximum allowable under the provincial specifications."
More from Roadbuilding
A British Columbia asphalt paving firm is growing by specializing in contract municipal work, with multiple small paving jobs per day and is using modern paving, compaction and milling equipment to expedite the process.
Caterpillar Inc. and Trimble Inc. have released eRoutes 3.0, a subscription-based plug-and-play digital telemetry solution designed specifically to serve the asphalt paving industry. The addition of eRoutes technology gives customers a proven, scalable process control solution that helps coordinate and synchronize the timely delivery of asphalt to the job site, a key to paving efficiency and quality.
Caterpillar has announced the release of Cat COMMAND for Compaction, an operator-assisted technology that automates the soil compaction process and helps contractors achieve compaction quality. The COMMAND for Compaction system is available for use on select Cat vibratory soil compactors as a dealer installed kit on both new and existing B-Series machines.
The HP series of pneumatic tire rollers is packed with technical innovations and further developments. Hamm has developed a common platform as the basis for all model variants in every market throughout the world. In addition, there are important innovations affecting the operator's platform, the water and additive sprinkling system as well as the ballasting.
Neal Manufacturing's High-Volume Road Maintenance Vehicle boasts efficient, clog-free movement of material
Neal Manufacturing, a division of Blastcrete Equipment LLC and a manufacturer of asphalt pavement preservation equipment, offers its High-Volume Road Maintenance Vehicle for maximum efficiency and high-quality results on large road projects. With innovative features and in-cab controls for key variables, the High-Volume Road Maintenance Vehicle allows for fast, precise sealcoat application, even with larger aggregate mixes.
BOMAG 10-ft (3.0-m) pavers now include significant upgrades to the operator's platform, which improve visibility and the operator experience. New dual swing-out operator stations feature BOMAG's SIDEVIEW innovation in which the seat and console swivel outward at four differing angles to deliver unobstructed views to the sides of the paver and the screed end gates. An open-grate design on the platform floor affords the operator direct-line sight of the screed spreading augers.
Contractors and government road agencies in North America have been using spray pavers to place ultrathin bonded overlays (UTBOs) for years.
World of Asphalt 2019 brought with it a return to the North American commercial paving market for Bomag Americas. The company made a big splash with the launch of the BF 300 C-2 track paver on this side of the Atlantic; the six-foot paver has been popular in the European market and buyers here will now get the opportunity to see why.
Asphalt milling, asphalt grinding and asphalt planing describe the same process by which weathered, oxidized asphalt pavement is removed from a driving surface in varying depths, as specified, done in advance of a fresh asphalt overlay or pavement preservation treatment.
Road construction is a hazardous occupation and roadsides are ranked as one of the most dangerous places to work. While roads are now safer than ever before, incidents involving road workers have risen.
Wirtgen has developed a solution that according to the company, for the first time, makes it possible to accurately and reliably document actual milling work completed – the new Performance Tracker (WPT).
Bergkamp Pivot Tack System for FP5 Flameless Pothole Patcher eliminates tripping hazards and keeps tack off of equipment
Tack that is sprayed into potholes to increase adhesion within a patch can also adhere to equipment hoses. In addition, the hoses can present jobsite tripping hazards. To address these common issues, Bergkamp Inc. has engineered a new Pivot Tack/Air Hose System for its FP5 Flameless All-In-One Pothole Patcher. Located at the back-right side of the FP5's hopper body, the system's pivoting arm holds the original tack hose off of the ground and parallel to the hopper, locked in place for transporting with a spring-loaded pin.
The fully autonomous Robomag tandem roller can be used completely independently in a defined work area. For loading or manual operation, the Robomag tandem roller can be operated simply by remote control.
Municipalities across Canada are burdened with aging transportation infrastructure, much of which was constructed in the post-war era and is nearing the end of its useful life. The 2016 Canadian Infrastructure Report Card (CIRC) found that one third of municipal infrastructure across the country is in fair, poor or very poor condition, and this includes 39 percent of roads and 26 percent of bridges. Cold weather and the use of corrosive de-icing salts further threaten the reliability of the transportation infrastructure we rely on every day.
Case Construction Equipment has introduced the latest additions to the DV Series of vibratory rollers. With models available in both double drum and combination (front drum with rear pneumatic tires) configurations, these rollers are powerful, easy to transport and nimble enough to work in a variety of residential and commercial construction applications where the operator may encounter tight quarters, curbs, structures and other obstacles.
Due to the rapid increase in heavy-duty transport, the global road network is showing visible signs of aging in many places. In order to ensure that the road infrastructure remains functional over the long term, roads are increasingly requiring structural rehabilitation. Wirtgen developed the high-performance W 380 CRi cold recycler specifically to meet these requirements. This innovative machine will be unveiled to the world at the Bauma trade show.
Wacker Neuson has updated its 1.2-ton tandem vibratory roller line to include improved visibility, curb clearance and easier service access. The RD12 series has dominated the industry since it was originally developed and introduced to the North American market 30 years ago. These popular ride-on rollers are the perfect fit for residential and commercial construction for asphalt and subbase soil compaction of parking lots, driveways, secondary roads and nature trails. Additionally, they are an excellent choice for landscape and golf course contractors to statically roll sod, fairways and greens.
Volvo Construction Equipment is adding the P7110B and P7170B asphalt pavers to the company's Lifetime Frame and Structure Warranty program and also expanding the pavers' extended warranty. The warranties come standard on machines delivered on or after Jan. 1, 2019.
"A penny saved is a penny earned." WITOS FleetView is a must-have for anyone who takes this old proverb to heart, because with the fleet and service management solution from the WIRTGEN GROUP, users and machine operators have diverse advantages that are worth their weight in gold. An example from the field confirms it: GSI-Asphalt, a medium-sized enterprise in Eging am See, near Passau, Germany, has been using WITOS FleetView for years in conjunction with the SmartService service agreement. While SmartService provides for regular inspections in accordance with the instruction manual, the telematics solution WITOS FleetView additionally supports proactive maintenance planning and a rapid response in the event of faults. Both services guarantee maximum machine availability - enhancing the cost-efficiency and value retention of the machinery.
Carlson Paving Products, Inc., an Astec Industries Company, is set to unveil its new wheel paver platform at bauma 2019 in Munich, Germany. The global debut of the CP60 and CP65 wheeled asphalt pavers represent the company's entry into the international 1.8m city paver market.
New light tandem rollers from Ammann make it even easier for operators to work next to obstructions such as curbs.
With the launch of the new Bell B45E 4x4 at bauma, Bell Equipment will add a new model to its range of articulated 4x4 two-axle ADTs. Similar to the sixty-tonner B60E and the smaller Bell B30E 4x4, the new truck is configured to provide a highly efficient and cost-effective transport solution for niche applications in the mining and construction industry.
Carlson Paving Products, Inc. showcased the company's newest screed in Indianapolis: the EZR208. Completing the Tacoma-based manufacturer's lineup of rear-mount highway-class screeds available for all current North American paver models, the EZR208 is a technological leap forward for superior mat quality, performance, and wide width ability.
Dynapac North America upgrades its commercial class paver range with the new FC1700C, FC1400 II, and FC1300 II. The new pavers are equipped with EPA Tier 4 Final certified emissions regulations-compliant engines and offer new features that takes the Dynapac commercial class paver range to the next level. The launch of the new FC1700 will take place at the National Pavement Expo in Nashville, TN.
Carlson Paving Products, Inc. recently unveiled the all-new 2019 CP75 II at World of Asphalt. Featuring all-new ergonomic controls and the choice of material conveyor systems, the new CP75 II joins Carlson's line up of high performance and heavy duty commercial platforms for North American contractors.
BOMAG introduces the new BF 300 series of commercial pavers that offers big paver features and efficiency in a 6-ft (1.8-m) paver. The rubber tire BF 300 P-2and BF 300 C-2 track pavers are designed to elevate paving quality and productivity, while reducing costs on a range of municipal, department of transportation, city development, and bike and cart path applications.
Originally launched in 2017 for excavators, articulated haulers and wheel loaders, ActiveCare Direct is now available on select Volvo asphalt pavers. Starting February 2019, the P7110B and P7170B will be eligible for a one-year free subscription to ActiveCare Direct with a new machine purchase.
Bridgestone Americas, Inc. will exhibit its integrated portfolio of off-the-road (OTR) products, technologies and services at the National Stone, Sand and Gravel Association Aggregates Academy and Expo (AGG1) and World of Asphalt 2019 Show and Conference, Feb. 12-14 in Indianapolis, Indiana. Located at booth 31089, Bridgestone will showcase the benefits of using products backed by integrated technologies to drive increased productivity for customers.
The Mecalac Group has built its innovative reputation on designing and producing construction machinery for urban jobsites. Since the acquisition of the British facility at Coventry in 2017, backhoe loaders, site dumpers and compaction rollers have been added to the existing ranges of excavators and loaders.
Case Construction Equipment has announced a new series of small-frame vibratory rollers. Available in both double drum and combination (front drum with rear pneumatic tires) configurations, these compact rollers are easy to transport and are ideal for working in residential and commercial construction applications where the operator may encounter tight quarters, curbs, structures and other obstacles.
Bomag Americas, Inc. and Komatsu America Corp. are pleased to announce that Komatsu's six company owned dealerships (Edward Ehrbar, Komatsu Equipment Company, Komatsu Northeast, Komatsu Southwest, Midlantic Machinery and Pine Bush Equipment) have entered into an arrangement for the sale and support of Bomag compaction, milling, paving and reclaiming/stabilizing equipment for roadbuilding and other construction markets.
For asphalt contractors to be successful in today's competitive paving market, paver and roller operators must acquire a deep knowledge of the equipment's features and put this knowledge into practice at the jobsite. With long-time equipment operators retiring at a high rate, the next generation of operators must receive extensive in-depth training on the equipment in order to meet project specifications without costly rework so companies can maximize equipment return on investment.
Asphalt Drum Mixers, Inc. offers crane-set and self-erect asphalt storage silos, which are compatible with both the company's own and similar competitive models of asphalt plants. ADM silos are available in many configurations from single self-erecting silo to multiple crane-set silos and several drive-through configurations. Capacities are available between 30 and 300 tons. Custom designs and capacities are also available to accommodate any producer.
November marked the four-year anniversary of the return of the segment-redefining Colorado midsize truck. Introduced as a 2015 model, the Colorado recorded its first full month of sales in October 2014. Since then, Canadian customers have bought 24,000 Colorados.
The RD-1200XT pavement-drying unit from Greenville, South Carolina-based Road Dryer, LLC, quickly dries asphalt and concrete pavement, allowing crews to pave or apply surface treatments or striping after just one pass. The unit, which blows heated air up to 300° F directly downward through multiple nozzles, eliminates the risk of "flying objects," and allows traffic to flow in nearby lanes — reducing congestion caused by traffic restrictions. Available as a simple-to-operate trailer- or truck-mounted unit, the RD-1200XT can be adjusted for 8-ft to 12-ft (2.4m to 3.7m) drying widths. Because it dries pavement on demand, it provides flexibility for contractors and government agencies to meet timetables by minimizing delays from weather- and project-related wet conditions.
Torwel Limited has announced its new and improved Heavy-Duty Snow Pushers in widths from 8' through 18'. All models boast robust design and upgrades that include adjustable skid/wear shoes and easy to use attachment systems that include the universal skid steer mounting system and the new versatile utility tractor/loader global mounting system.