The Roadtec MTV-1100e offers a low, machine-height profile, which is designed to keep the operator closer to the ground. The lower 9’ 10½” (3m) machine height with a deck height of 6’ 2” (2m) is designed to provide the machine operator with a clearer view of the surroundings and the ability to more easily talk with ground crew. A dual staircase with handrails flanks the machine allowing workers to cross the paving train without risk of being on the ground between machines.
CASE Construction Equipment has introduced two new double drum asphalt rollers—the DV209D and DV210D. The new vibratory asphalt rollers deliver 100 percent tractive effort and reliable compaction performance due to a balanced drum design and a variety of standard features, including automatic vibration control, crab steering, an oscillating articulated roller joint and a pressurized triple-filtration water system. An available high-frequency option allows for frequencies up to 4,020 vpm (67 Hz) for greater control of compaction performance based on the thickness and density requirements of each lift. A combination option is also available for both models, featuring a vibratory front roller and rear pneumatic tires that provide a smooth surface finish.
The new BOMAG BM 2200/75 delivers high-performance milling of half-lane widths reaching 86.6 in (2,200 mm) at precise milling depths of up to 13.8 in (350 mm). Offering range of quick-change milling drums options and efficient transition of engine to milling power, this largest cold mill in the BOMAG product line is ideally suited for high performance applications such as major roads, highways, and airports.
CASE Construction Equipment has launched the DV45CC combination vibratory roller. The new vibratory roller compacts with the front drum and delivers a smooth finish with the rear pneumatic tires. An offset drum with tapered edge and high curb clearance offers precision compaction capabilities in tight spaces; and adjustable scrapers, an automatic vibration control system and a pressurized water system ensure a smooth, clean finish in a variety of asphalt applications.
Ammann now has an asphalt mixing plant that not only utilizes recycled asphalt (RAP) but also incorporates consumer waste, such as glass bottles, tires and fly ash. The result is a mix comprised of 99 percent recycled materials – or put another way, a mix that uses only one percent virgin materials.
Properly compacted asphalt is a major factor in the lifespan of roads since inadequately compacted asphalt deteriorates at a more rapid rate than properly compacted material.
Construction engineers typically assess asphalt by measuring density variations, which can be used to calculate the air void content. The air void content within asphalt varies based on the amount of compaction during asphalt emplacement and variations in the asphalt mix composition. Asphalt with too many air voids (often considered to be more than 8 percent) deteriorates at a more rapid rate. Too few air voids (less than 3 percent) results from over-compacted asphalt, which is also undesirable. In either case, the asphalt is subject to early failure and the road’s lifetime is less than asphalt that contains the optimal air void content.
For road rehabilitation, the conventional process is to mill off the surface and replace the asphalt pavement. There are two other methods that are gaining usage worldwide.
Complete with new oscillation technology, the DD105 OSC double drum compactor from Volvo Construction Equipment has the ability to effectively compact in delicate areas, such as bridges, over pipes and close to residential areas. The 10 tonne DD105 OSC asphalt compactor from Volvo Construction Equipment is engineered for efficiency, ensuring increased profitability while minimizing fuel consumption, emissions and noise.
Sandvik Mining and Rock Technology introduces its new Double TriSpec tool, which is intended for use in extremely abrasive asphalt milling conditions. In road milling, the greatest cause of tool failure is known as body wash – the premature wearing away of the steel body that surrounds and supports the vital brazed-carbide insert in each of the tools on the milling drum. When body wash occurs, the tool’s steel body becomes vulnerable to failure, and the tool must be changed long before the carbide tip has been fully utilized – resulting in downtime, lost production and higher labor costs.
Wirtgen's newest small milling machines are equipped with the latest Wirtgen control technology and a uniform operating concept.
Volvo Construction Equipment’s PT125C nine-wheeled pneumatic tire roller is an exceptionally adaptable machine that delivers uniform smoothness and long-lasting performance. Designed for roadway construction and resurfacing applications, the machine employs a kneading action for the compaction of hot and warm mix asphalt. The PT125C is also appropriate for chip seal applications, thanks to its heavy-duty 14-ply tires, which press the aggregate into the binder without fracturing.
The latest survey of asphalt pavement mix producers documents the industry’s continued success in improving the sustainability of America’s roads through the incorporation of recycled materials and the use of energy-saving warm-mix asphalt technologies.
Wirtgen's large milling machines for renewing large asphalt or concrete surfaces round out the “high end” of Wirtgen's line of cold milling machines at Conexpo-Con/Agg 2017. With working widths of 4 ft., 11 in., (1.5 m) to 14 ft., 4 in. (4.4 m), these machines – alongside the compact- and small-class mills – feature innovations that further optimize cost efficiency.
Sakai has introduced upgrades to three of its single-drum vibratory. The Sakai SV204, SV414TF and SV544FB now feature Tier 4 Final engines and enhanced capabilities as single-drum vibratory roller solutions in drum widths 54 to 84 inches. The upgraded designs are available with either smooth (D) or padfoot (T) drum, with smooth shell kits available for all models and either style, padfoot or smooth (DF and TF), on the SV544 A strike-off blade will be available across the line as well for the padfoot drum model (TB) and padfoot with shell-kit models (FB).
The 8-foot paver segment is of central importance to many road construction companies, because with these machines they can cover a wide range of applications, from small municipal job sites to highway construction and rehabilitation. With their strong performance and a uniquely compact design, the new SUPER 1700-3i and SUPER 1703-3i pavers put JOSEPH VÖGELE AG at the forefront of technology in this field. They also integrate the practical features that make the "Dash 3" generation of SUPER pavers synonymous worldwide with modern road pavers – most notably the intuitive and ergonomic ErgoPlus 3 operating concept.
From highways to airport runways, the Volvo DD120C and DD140C are designed to achieve a smooth, even mat finish in fewer passes — all without compromising fuel-efficiency. With operating weights of 27,700 pounds and 30,486 pounds, combined with rolling widths of 79 inches and 84 inches, respectively, the DD120C and DD140C compactors deliver the performance needed for large jobs.
Hamm is introducing its new DV+ series tandem rollers to North America at CONEXPO-CON/AGG 2017. For the launch in Las Vegas, Hamm is showing a DV+ 70i model weighing 7.7 tons (7 metric tonnes). Other models are set to follow in 2018. These highly productive, pivot-steered rollers meet all requirements for optimum compaction quality. According to Hamm, operators are enthusiastic about the excellent visibility and the new, intuitive Easy Drive operating concept.
Topcon Positioning Group has announced that two of its leaders have been selected for speaking engagements at CONEXPO 2017. The sessions will include discussions with John Dice, director of Professional Services, and Dave Henderson, director of Geospatial Solutions, who are presenting on topics titled, “Machine Control Technology in Paving and Milling” and “Commanding Your Star Fleet: FAA Regulations Update” respectively.
Lake Erie Portable Screeners introduces a portable box screener as a smaller, economical alternative to the Pitbull 2300. The Pitbull 2300B has no conveyors and features a smaller frame, allowing it to boast the durability, portability and screening rate of the 2300 at almost half the cost. The new model is simpler, lighter and more compact than the larger version, yet delivers high outputs with a wide range of materials, including topsoil, mulch, gravel, stone and asphalt. The combination of low price and high performance makes the machine ideal for rental centers and small- to mid-sized contractors in industries such as landscaping, construction and excavation.