Better Roads Digital Magazine
Issue link: http://read.dmtmag.com/i/258673
RoadScience 10 February 2014 Better Roads oblong corrugated edge drain pipe for use in subsurface drainage applications, offered in 12- and 18-inch heights. It has internal bracing adjoining each long wall to prevent crushing under typical loading. AdvanEDGE pipe does not rely on the geotextile for struc- tural support, although it's available with or without the geotextile wrap. Instead, its strength is derived from a cor- rugated cylinder maintained by pillars located strategically throughout the core. The result is a series of oval-shaped sections with all-direction strength. This completely enclosed waterway with fewer projections allows it to function as a pipe, discharging more water to the outlet. Road patch under any conditions Typically road agencies patch winter potholes with the "throw, roll and go" method; that is, workers shovel asphalt into a pothole, truck tires are backed over the mix to com- pact it, and then the truck and crew move on to the next pothole. The patch seldom outlasts the winter. This results in repetitive labor as the pothole is given a more permanent patch when warm weather comes. But the ability to permanently patch potholes in winter – under wretched conditions with standing water in the pothole – will eliminate that second trip and win kudos from weary motorists. That's the philosophy behind the new generation of value- added, high-performance pothole patching compounds. One of them EZ Street Co., will be showing its product in booth No. 90301 in the Platinum Hall on the Platinum Lot. EZ Street is a polymer-modiﬁed, hydrophobic cold asphalt which can be used in potholes with standing water and requires no mixing or tack coat. The product is a black, coated stone with petroleum odor. Because it's hydrophobic it can be used in the presence of water. The most important ingredients are proprietary polymer modiﬁers. To make EZ Street, selected and graded raw materials (coarse and ﬁne aggregate) are combined with the liquid portion of the mix, made up of asphalt cement, diluents and the polymers. It's available in two varieties, the conventional polymer- modiﬁed cold mix, and a "green" Bio-Blend "hybrid" mix, which uses in addition to liquid asphalt, renewable resources such as canola and soy crops, or other industrial byproducts, which substitute for classic petroleum derivatives in the mix. It also may include reclaimed asphalt pavement (RAP) in varying amounts. UPM Cold Mix and UPM Green Cold Mix high performance asphalt repair products from Unique Paving Materials Corp. also will be displayed at ConExpo-Con/Agg 2014, at booth No. 52355 in the Central Hall. UPM Cold Mix describes bituminous patching mixes that are designed in various seasonal grades for use when the outside ambient temperature is in the range of -15 to 100 degrees Fahrenheit, each grade manufactured to accom- modate anticipated climatic conditions. UPM calls its grades Winter Mix, Spring/Fall Mix and Summer Mix. UPM's designs work as a patch during cold, damp. wet or hot weather for both bituminous and concrete pavement. UPM's proprietary cold-asphalt additives and quality control provide a pavement repair that will outlast the surrounding pavement matrix more than 90 percent of the time, UPM. Read "Tough Fibers for Concrete," which focuses on a new generation of polypro- pylene/polyethylene synthetic ﬁbers, at betterroads.com/ﬁbers-for-concrete. Conventional pothole repair in winter is complicated by cold ambient temperatures and standing water, leading to short-lived ﬁxes. Engineered, proprietary polymer modiﬁed pothole patching mixes permit permanent patches under winter working conditions. Photo courtesy of EZ Street Inc. Photo courtesy of EZ Street Inc.