Renewable Energy: More States Are Creating a Buzz by Allowing Higher Percentages of Reclaimed Asphalt Pavement

Asphalt pavements are the most recycled material in the U.S., according to the Federal Highway Administration. This article describes surveys undertaken by the FHWA RAP Expert Task Group, whose mission is to coordinate and improve guidance for the asphalt recycling program around the U.S. A survey conducted by the group in 2007 showed that while some state’s allowed the use of RAP at 20 percent of higher, the actual amount used was far less. Since then, additional surveys have shown that 22 states have increased the allowable percentage, and some states do not specify upper limits. Surveys conducted by the group also found that managing RAP stockpiles was the most common barrier to increasing the use of RAP; other issues in order of importance included long-term performance, binder issues, and availability of supply of RAP in some areas,. The author points out that while there is increasing use of RAP, there are opportunities to further increase its use.


  • English

Media Info

Subject/Index Terms

Filing Info

  • Accession Number: 01145332
  • Record Type: Publication
  • Source Agency: UC Berkeley Transportation Library
  • Files: BTRIS, TRIS
  • Created Date: Nov 23 2009 7:32PM