In this article, the author addresses the ongoing research being conducted by the Indiana Department of Transportation (IDOT) to determine the efficacy of two newer porous asphalt surfaces, often known as permeable European mix (PEM), : stone-matrix asphalt (SMA) and porous friction course (PFC). A section of conventional Superpave hot-mix asphalt (HMA) is also scheduled to evaluated alongside for comparison purposes. The field tests are designed to measure performance in terms of tire/pavement noise generation, pavement distress, and surface texture. The two non-conventional PEMs were composed of between 80 and 90 percent steel slag, 10 percent sand or stone sand, and 10 percent mineral filler (for the stone-matrix asphalt). The hot mix asphalt (HMA) that was tested alongside the European mix was a 50 percent steel slag with 50 percent coarse dolomite. The SMA was designed to have about four percent air void with the PFC having between 18 and 22 percent void, and both used a MTD construction method. The National Center for Asphalt Technology (NCAT) has conducted the field measurements using the close-proximity method (CPX) trailer to gather sound data from vehicles running over the different surfaces. Tests found both of the PEMs to reduce sound in comparison to standard HMA, with the PFC producing even less than the SMA. Although research is still being conducted to determine the durability of PFC, the sound abatement benefits are economical with regard to more traditional methods.

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  • Corporate Authors:

    Scranton Gillette Communications

    380 E Northwest Highway, Suite 200
    Des Planes, IL  United States  60016-2282
  • Authors:
    • McDaniel, R S
  • Publication Date: 2005-9


  • English

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Filing Info

  • Accession Number: 01006929
  • Record Type: Publication
  • Source Agency: UC Berkeley Transportation Library
  • Files: BTRIS, TRIS
  • Created Date: Nov 8 2005 7:32AM