More Articles for hot-mix asphalt (HMA)

Plant Management of RAP/RCA

Better Roads Staff - Nov 06, 2013

Plant Management of RAP/RCA

Processing and storage makes reclaimed asphalt pavement and recycled concrete aggregate useful as aggregate.   By Tom Kuennen, Contributing Editor   In the past two decades, reclaimed asphalt pavement (RAP) and recycled concrete aggregate (RCA) have taken their places among materials commonly used for ...

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Long Live Asphalt Pavements

Better Roads Staff - Oct 02, 2013

Long Live Asphalt Pavements

The perpetual pavement project on California’s I-5 has sparked a trend in the state for asphalt pavements designed to last 40 years with minimal maintenance. As traffic whizzed nearby on busy Interstate 5 in California, Shirley Choate and Chris Cummings watched an asphalt ...

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Beware Premature Aging of Binder

Better Roads Staff - Jun 06, 2013

Beware Premature  Aging of Binder

Take care with liquid asphalt binder to avoid thermal crack failure   Thermal cracking – also known as low temperature cracking – in bituminous pavements appears as a series of transverse cracks that extend across the pavement surface in response to cold ...

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Special Transportation Research Board 2013 Report

Better Roads Staff - Apr 03, 2013

Special Transportation Research Board 2013 Report

‘Bio-Binder’ Green Modifiers Star at TRB   By Tom Kuennen, Contributing Editor   The emerging universe of biologically based modified asphalts got significant exposure at the 92nd annual meeting of the Transportation Research Board (TRB) in Washington, D.C. Better Roads was there. More than 11,700 ...

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Road Science

Better Roads Staff - Mar 20, 2012

Road Science

Eureka! Research that makes a difference Intelligent compaction . . . application of reclaimed asphalt pavement (RAP) and recycled concrete aggregate (RCA) . . . prefabricated bridges and pavements. They’re just a few of the themes of research papers presented at the ...

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Cracking Cold

Better Roads Staff - Feb 17, 2012

Cracking Cold

Solving the Riddle of RAP and Thermal Cracking   By Tom Kuennen, Contributing Editor Use of reclaimed asphalt pavement (RAP) in hot-, warm- and cold-mix asphalt is growing dramatically, as tests validate its use in ever-increasing quantities. But there are fears that higher quantities ...

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Highway Contractor

Better Roads Staff - Aug 02, 2011

Highway Contractor

Warm Mix Asphalt Rolls into Place Technologies taking form under the watchful eyes of the National Asphalt Pavement Association and the Federal Highway Administration By Mike Anderson There is little doubt that even the most staid and traditional of road agencies and contractors ...

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