This report documents the rationale for changes in carbonate-aggregate specifications enacted in 1969, and the effect that these changes have had on upgrading the skid resistance of bituminous pavements in New York. The new specification required a minimum of 10-percent sand-sized acid-insoluble residue or a minimum of 20-percent chert particles in crushed limestone coarse aggregate. Limestone aggregates not meeting one of these criteria were required to be blended with an aggregate composed of at least 20-percent non-carbonate constituents. Dolomitic aggregates were exempted. A total of 68 pavements placed in 1969 and 1970 under provisions of the new specification were skid tested in 1973, 1974, 1975, and 1979. The extent to which aggregate blending enhanced skid resistance of these pavements is evaluated. Also examined is the additional benefication that would result from extending the 10-percent insoluble-residue criterion to dolomitic aggregates, and from increasing the minimum blending ratio from 20:80 to 35:65. Also, a scheme is proposed that would relate long-term skid resistance needs of highways in different design classes to skid-resistance characteristics of various generic aggregate groups. This scheme, designed to maximize the potential use of all aggregates, is based on a comparison of the cumulative design-life traffic volume of each highway design class with the range of cumulative traffic volumes within which each aggregate group will assure an acceptable level of skid resistance 90 percent of the time. (FHWA)

  • Supplemental Notes:
    • Prepared in cooperation with the Department of Transportation, Federal Highway Administration. Study Title: Development of Skid Resistant Bituminous Surfaces.
  • Corporate Authors:

    New York State Department of Transportation

    Engineering Research and Development Bureau, 1220 Washington Avenue
    Albany, NY  United States  12232

    Federal Highway Administration

    1200 New Jersey Avenue, SE
    Washington, DC  United States  20590
  • Authors:
    • Miller, R W
    • Chamberlin, W P
  • Publication Date: 1980-4

Media Info

  • Pagination: 45 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00319130
  • Record Type: Publication
  • Source Agency: National Technical Information Service
  • Report/Paper Numbers: FHWA-NY-RR 77,, FCP 41H3-042,, Final Report
  • Created Date: Nov 19 2003 12:00AM