More Articles for RAP

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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RoadScience

Brooke Wisdom - Feb 01, 2011

RoadScience

Hot, Cold and Green (and the 3Es) In-place pavement recycling meets a variety of needs. By Tom Kuennen, Contributing Editor Green construction now is the No. 1 theme in roadbuilding, and hot-in-place pavement recycling (HIR) and cold-in-place pavement recycling (CIR) have taken on the ...

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Highway Contractor

Brooke Wisdom - Dec 01, 2010

Highway Contractor

Half and Half One year later, a mat with 50-percent RAP looks really good. by P. Michael Harnsberger, Western Research Institute All photos courtesy of Western Research Institute. A stretch of asphalt in Canada, laid down in September 2009, is beginning to reveal its secrets. Initial ...

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INDOT new paving specs allow more RAP

Tina Grady Barbaccia - Apr 22, 2010

In honor of Earth Day, the Indiana Department of Transportation (INDOT) announces new paving specifications that allow for additional use of recycled materials. By increasing the amount of reclaimed asphalt pavement and recycled roofing shingles within asphalt mixes, INDOT anticipates ...

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New ASTM standard proposed for RAP highways base, sub-base

Tina Grady Barbaccia - Feb 24, 2010

A new ASTM standard is being proposed for recycled asphalt pavement materials for base and sub-base for highways and airports. The proposed standard (WK26824) -- New Specification for Standard Specifications for Recycled Asphalt Pavement Materials for Base or Subbase for Highway ...

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Highway Contractor: RAP -- Making new fans across the country

Brooke Wisdom - Feb 01, 2010

Highway Contractor:  RAP -- Making new fans across the country

by Daniel Brown, Contributing Editor With workability, environmental benefits and solid performance reports,Reclaimed Asphalt Pavement — RAP — is becoming a bigger part of the mix.   It’s a trend that’s sweeping the nation: using more reclaimed asphalt pavement (RAP) in hot-mix asphalt. ...

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Featured Articles: The Power of Milling

Brooke Wisdom - Oct 01, 2009

Featured Articles: The Power of Milling

 With a struggling economy gripping virtually every country in the world, there is a greater need than ever for a good pavement management program. Milling is a vital option. Transportation agencies have a variety of tools available for routine and ...

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Featured Articles: Keys to Managing RAP Variability

Brooke Wisdom - Oct 01, 2009

Featured Articles: Keys to Managing RAP Variability

Specifying agencies sometimes say that they limit the amount of reclaimed asphalt pavement (RAP) in asphalt mixes because these stockpiles are highly variable. Therefore, the agencies reason that allowing higher percentages of RAP could have a negative impact on the ...

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