Tag: asphalt cement

Roadbuilding
Why repair cracks when you can avoid them altogether?
Fibers in concrete bridges controls cracks High-performance, fiber-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 Transportation Innovation and Research, in their 2014 TRB paper, “Evaluation of High […]
September 10, 2014
In Washoe County, Nevada, FiberMat crack-resistant, stress-absorbing membrane puts a network of fiberglass strands between two layers of polymer modified emulsion – all placed simultaneously – then topped with a layer of chips which is compacted with pneumatic rollers.
Roadbuilding
Rubber Expands
Asphalt containing rubber continues to stretch its way into more state Department of Transportation.
September 5, 2014
Thin overlay of warm-mix asphalt containing terminal blend asphalt rubber and Evotherm warm mix additive is placed on Calif. 1, the Pacific Coast Highway, near Fort Bragg two hours after loadout.
Roadbuilding
A crack-resistant road? You better believe it!
Stress-absorbing membrane interlayer in Rural Nevada In Washoe County, Nev. County Highway 447 was improved by cold in-place recycling, placement of a fiber-reinforced SAMI, and finished with a Type III slurry surfacing as the final wearing surface instead of a costly total reconstruction. “With fuel prices going up, we are seeing a lot more truck […]
September 4, 2014
In Illinois thin-lift asphalt study, only stone matrix asphalt (SMA) mixes scored higher in overall performance than steel slag/polypropylene-aramid fiber blend with PG 70-22, SBS-modified asphalt cement
Roadbuilding
A road without fibers is a road soon to be in need of repair
New research is reaffirming the benefits of steel or synthetic engineered fibers in asphalt pavements and concrete, where they enhance performance, replace fine matter, and in the case of concrete, control shrinkage cracking and keep deicing salts away from reinforcing steel. For decades, fibers of all origins have been hawked as cure-alls for pavement problems. […]
August 29, 2014
At Jackson Hole Airport in Teton County, Wyoming, thin asphalt overlay containing synthetic fibers is placed in this runway project.
Roadbuilding
The Magic of Rubberized Asphalt
Agencies and contractors are looking for ways to hold the line on the costs of asphalt pavements.
March 7, 2014
This rubber blending equipment is set up on an asphalt plant owned by Diamond B in Louisiana. The blending equipment was built by D&H Equipment Ltd.
Roadbuilding
Loss of Cover
Decoding the secrets of asphalt stripping and raveling.
July 5, 2013
Raveling describes the loss of aggregate from the driving surface of a bituminous concrete pavement.
Roadbuilding
Road Science
What percentage of RAP is best? It depends.
November 13, 2011
Processed, ground reclaimed asphalt shingles await addition to asphalt mix near Waco, Tex., and are a low-volume adjunct to RAP.
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