SUPERPAVE ENTERS THE MODIFICATION ERA: WHY- AND HOW - SOME STATES ARE INCREASING THE BINDER CONTENT IN THEIR SUPERPAVE MIXES

In 1987. the federal Strategic Highway Research Program (SHRP) was created to develop Superpave, an attempt to correct rutting problems on high-volume asphalt roads by developing a new federal system for designing hot-mix asphalt. Now, however, critics say that Superpave itself needs fixing, claiming that some Superpave surface mixes do not have enough asphalt binder in them. This article describes efforts by various state departments of transportation (DOT) at fixing the mixes by reducing air voids or lowering design compaction levels. In Colorado, for example, the DOT decided on a case-by-case basis to lower air voids content from four to three percent.

  • Availability:
  • Supplemental Notes:
    • Page range: pp 30-31, 34-36
  • Corporate Authors:

    James Informational Media, Incorporated

    2720 South River Road, Suite 126
    Des Plaines, IL  United States  60018-
  • Authors:
    • Brown, D
  • Publication Date: 2005-9

Language

  • English

Media Info

  • Features: Figures; Photos;
  • Pagination: 5p
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 01006920
  • Record Type: Publication
  • Source Agency: UC Berkeley Transportation Library
  • Files: BTRIS, TRIS
  • Created Date: Nov 8 2005 7:32AM