Road Science

Better Roads Staff - Jan 01, 2013

Preserving the Unpaved Road ‘Gravel,’ stone-surfaced and dirt road preservation helped by new techniques, guidelines, RAP By Tom Kuennen, Contributing Editor A clogged corrugated drainpipe under this Texas road results in water flowing across it, eroding the surface and creating a ford ...

Better Roads 2012 Top Rollouts

Better Roads Staff - Dec 01, 2012

Difference-Makers Better Roads editors choose the year’s top products. This year we’ve spent some great times clambering over and operating equipment. Tires were usually too big to kick but we fiddled with any dials and levers we could fiddle with. We went ...

Road Science

Better Roads Staff - Nov 13, 2011

?%# 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, ...

Highway Contractor

Brooke Wisdom - Dec 01, 2010

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 ...

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 ...

Highway Contractor: RAP — Making new fans across the country

Brooke Wisdom - Feb 01, 2010

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. ...