More Articles for asphalt cement

Why repair cracks when you can avoid them altogether?

Tom Kuennen - Sep 10, 2014

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 ...

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Rubber Expands

Tom Kuennen - Sep 05, 2014

Rubber Expands

Asphalt containing rubber continues to stretch its way into more state Departments of Transportation.   By Tom Kuennen, Contributing Editor   After years of promotion, pavements using asphalt rubber, or rubberized asphalt (there’s a difference), are spreading far and wide in the United States. Formerly ...

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A crack-resistant road? You better believe it!

Tom Kuennen - Sep 04, 2014

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 ...

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A road without fibers is a road soon to be in need of repair

Tom Kuennen - Aug 29, 2014

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 ...

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The Magic of Rubberized Asphalt

Better Roads Staff - Mar 07, 2014

The Magic of Rubberized Asphalt

As prices for asphalt cement (AC) and polymer have shot up dramatically, agencies and contractors are looking for ways to hold the line on the cost of asphalt pavements.   By Daniel C. Brown   The number of transportation agencies that use recycled tire ...

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Loss of Cover

Better Roads Staff - Jul 05, 2013

Loss of Cover

Decoding the secrets of asphalt stripping and raveling   By Tom Kuennen, Contributing Editor     Raveling describes the loss of aggregate from the driving surface of a bituminous concrete pavement. Loss of aggregate through raveling encourages pothole formation and cracking, which can introduce water ...

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Road Science

Better Roads Staff - Nov 13, 2011

Road Science

?%# What percentage of RAP is best? It depends. T here are powerful inducements today to reuse reclaimed asphalt pavement (RAP) in a variety of applications. And the big question about RAP has shifted from whether it belongs in mixes at all, ...

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