Better Roads

August 2014

Better Roads Digital Magazine

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RoadScience 10 August 2014 Better Roads Also, the highway is burdened once a year by the week- long, end-of-summer Burning Man art festival celebrated in the desert north of Gerlach. "Basically the highway was just sand and oil, mixed together," said Greg Belancio, P.E., senior licensed engineer, Engineering Division, Washoe County Department of Public Works. "The section averages 4 inches thick and the county had been doing it that way since the 1970s." "The cold in-place process is really going to help us out," Gooch said. "It's totally redone the road surface. All the cracks are gone. And we follow with the fi ber membrane, which should resist future cracking and provide strength against lateral loading. We anticipate that it will bring not just lateral and horizontal strength, but strength in all directions. The crack-resistant membrane, called FiberMat by Colas Solutions Inc., is a specially formulated, polymer modifi ed, fi ber-impregnated membrane binder for use with chip seal applications or as an interlayer with various overlays (e.g. HMA, slurry surfacings or micro surfacing). FiberMat provides strength and fl exibility due to the utili- zation of chopped fi berglass strands that form a high-tensile strength matrix. The system is installed by a truck-mounted machine that uniformly applies the fi berglass strands – cut from onboard spools – in a random, continuous application. In placement, the strands are sandwiched between two layers of sprayed latex polymer-modifi ed CRS emulsion, prior to the application of an aggregate cover. Much like a conventional chip seal, the fi nal product then is gently rolled with rubber-tired compactors to seat the aggregate into the product. The combination of highly modifi ed asphalt residue and a fi berglass reinforcement matrix creates a crack-resistant membrane that can stand up to heavy traffi c loadings. Fibers in concrete bridges High-performance, fi ber-reinforced concrete controls cracks and provides satisfactory bond strengths in bridge deck construction, say Levon C. Hoomes, E.I.T., Celik Ozyildirim, Ph.D., P.E., principal research scientist, and Michael C. Brown, Ph.D., P.E., associate director, Virginia Center for Transpor- tation Innovation and Research, in their 2014 TRB paper, 7H[W,1)2WRRUYLVLWZZZEHWWHUURDGVFRPLQIR 7H[W,1)2WRRUYLVLWZZZEHWWHUURDGVFRPLQIR PB ASPHALT PATCHERS WORLD CLASS PATCHERS SINCE 1957 $W3%ZHXQGHUVWDQGSRWKROHSDWFKLQJ)RURYHU\HDUVZHKDYH GHVLJQHGTXDOLW\3DWFKHUVWKDWDUHGXUDEOHORQJODVWLQJDQGEXLOW IRU\HDUURXQGXVH:KHQ\RXQHHGDSRWKROHSDWFKHUORRNWR3% ZHKDYHVROXWLRQVWRPHHW\RXUQHHGV3URYHQ3DWFKHUVDYDLODEOH ZLWKDYDULHW\RIIHDWXUHVDQGFDSDFLWLHVIURPWRFXELF\DUGV PB Corporation I 5778 W Barstow Ave I Fresno, CA I 800-350-8521 TRUCK MOUNTED HOOK LIFT DUMPBODY SLIP-IN TRAILER MODELS &DOO

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