SKID CHARACTERISTICS OF BITUMINOUS SURFACES

A DRAG FORCE TRAILER WITH CONTROLLED BRAKING OF ONE WHEEL WAS USED TO MEASURE THE COEFFICIENT OF FRICTION OF WET BITUMINOUS SURFACES. NEARLY ALL CRUSHED STONE AGGREGATES USED IN THE STATE WERE INCLUDED IN SURFACES MEASURED. A TECHNIQUE FOR MEASURING THE SKID RESISTANCE OF BITUMINOUS SURFACES CONSTRUCTED IN THE LABORATORY AND SUBJECT TO ARTIFICIALLY INDUCED TRAFFIC WEAR WAS TRIED BUT WAS NOT SUCCESSFUL. ANALYSIS OF DATA INDICATED THAT A COEFFICIENT OF FRICTION ABOVE 0.32 COULD BE ASSURED IF THE AGGREGATE RETAINED ON THE 1/4 IN. SIEVE FOR 1A MIXES /BITUMINOUS CONCRETE/ OR THE AGGREGATE RETAINED ON THE 1/8 IN. SIEVE FOR 1A-C AND 2A MIXES /SHEET ASPHALTS/ CONTAINS MORE THAN 12% HARD MINERALS EITHER AS IMPURITIES IN SOFTER AGGREGATES OR AS INDIVIDUAL STONES. AN ACID LEACHING TECHNIQUE WAS USED TO DETERMINE THE PERCENTAGE OF HARD IMPURITIES IN LIMESTONE AND DOLOMITE AGGREGATE. /AUTHOR/

  • Supplemental Notes:
    • Hpr-pr- 1/2/, STATE 16-3, BPR 13
  • Corporate Authors:

    New York State Department of Public Works

    ,    
  • Authors:
    • Gibson, J L
    • Kearney, E J
  • Publication Date: 1967-4

Subject/Index Terms

Filing Info

  • Accession Number: 00210375
  • Record Type: Publication
  • Source Agency: Bureau of Public Roads /US
  • Files: TRIS, STATEDOT
  • Created Date: Jul 28 1994 12:00AM