Here’s How it Works

When the paving crew needs to switch from a paving job that specs a material transfer vehicle (MTV) to a job that requires traditional laydown, the rubber track Cedarapids CR662RM RoadMix from BOMAG, Ridgeway, South Carolina, offers a one-machine transition. Here’s how it works. First, a new 260-horsepower Tier 4 Final Cummins diesel engine drives […]

  Asphalt producers and contractors need to measure and document the temperature of hot mix asphalt (HMA) for optimum quality control/quality assurance (QC/QA). To that end, the team at SYSTEMS Equipment, Waukon, Iowa, created the 1292 Material Temperature Capture at Time of Load element to work in conjunction with its Windows-based loadout system, the WIN-LC3000. […]

Many municipal mill and fill projects require milling around raised manholes, leaving behind a hazard that could lead to claims from drivers. To resolve the issue, contractors could use cold patch to create a temporary incline around the manhole. This requires labor, materials and traffic control measures for both installation and removal. The manhole safety […]

When state DOTS, like Connecticut DOT, started requiring secondary compaction of the notch wedge joint, Jerod Willow, proprietor of Willow Designs, East Berlin, Pa., developed a solution:Willow Designs’ notch wedge pneumatic roller. Although we don’t often get the chance to see notch wedge pneumatic rollers in action due to their heat retaining covers, here’s a […]

The TRI-MIX warm-mix injection system from Tarmac International Inc., Lee’s Summit, Mo., is designed for dual use—the producer can set it up for water or chemical injection to create foamed liquid asphalt cement (AC) at lower production temperatures than hot-mix asphalt. Here’s how it works. First, the operator sets the percentage of injected liquid into […]

The Accu-Shear® from Stansteel/Hotmix Parts, Louisville, Ky., is designed for advanced in-line water foaming of liquid asphalt cement (AC). The shearing process promotes total blending and homogenized flow for warm-mix asphalt (WMA) production. The Accu-Shear is also engineered for in-line blending of rejuvenators, latex, emulsions and most liquid chemicals on the market today with the […]

The AquaFoam® warm mix system from Reliable Asphalt Products, Shelbyville, Ky., is designed to foam liquid asphalt cement (AC) binder with water to create a foamed warm-mix asphalt (WMA) product. Here’s how it works. First, a technician fits the AquaFoam components in line at the HMA plant. The 3-inch jacketed injector goes directly into the […]

Warm-mix asphalt (WMA) production shouldn’t be limited to drum plants. With that truth in mind, the team at Meeker Equipment, Belleville, Pa., created its warm mix systems for use on either drum or batch plants. Here’s how the drum system works. A high-pressure, stainless steel pump, driven by a 3- or 5-horsepower variable frequency drive […]