RELATION OF VISCOSITY GRADED ASPHALT CEMENTS TO MIXTURE BEHAVIOR AND PAVEMENT PERFORMANCE

THE SCOPE AND TESTING METHODS ARE OUTLINED TO BE FOLLOWED IN A STUDY THAT WILL COMPARE THE PERFORMANCE OF BITUMINOUS PAVEMENTS USING ASPHALTS OF VARIOUS VISCOSITY AND PENETRATION GRADES. FOUR ADJACENT TEST SECTIONS WERE CONSTRUCTED: (1) AC 6 VISCOSITY GRADE, 150-200 PENETRATION GRADE; (2) AC 6 VISCOSITY GRADE, 85-100 PENETRATION GRADE; (3) AC 12 VISCOSITY GRADE, 60-70 PENETRATION GRADE; (4) AC 12 VISCOSITY GRADE, 85-100 PENETRATION GRADE. THE TEST SECTIONS WERE CONSTRUCTED UNDER SIMILAR CONDITIONS OF WEATHER, TERRAIN, CONSTRUCTION PROCEDURES, AND EQUIPMENT. EACH LANE IN EACH SECTION WILL BE SUBJECTED TO THE SAME VOLUME AND TYPE OF TRAFFIC. THE FOUR TEST SECTIONS WILL BE SAMPLED PERIODICALLY AND THE RECOVERED ASPHALT WILL BE TESTED FOR PENETRATION, VISCOSITY, AND DUCTILITY. THE PERFORMANCE AND SERVICEABILITY RATINGS OF THE PAVEMENTS WILL BE CHARACTERIZED BY TESTING WITH VARIOUS TYPES OF EQUIPMENT, NAMELY, THE ROAD LOGGER, DYNAFLECT, PROFILOGRAPH, NUCLEAR MOISTURE PROBE, AND THE VARIABLE LENGTH STRAIGHT EDGE. THE REPORT PRESENTS THE TEST RESULTS OF ORIGINAL ASPHALT CHARACTERISTICS, MARSHALL DESIGN DATA, CONSTRUCTION RECORDS AND TEST RESULTS OF PAVEMENT SAMPLES TAKEN ONE WEEK, THREE MONTHS, SIX MONTHS, AND NINE MONTHS AFTER CONSTRUCTION. NO CONCLUSIONS ARE DRAWN FROM THIS LIMITED DATA. THE STUDY WILL CONTINUE UNTIL ANALYSIS REVEALS SIGNIFICANT DATA FROM THE TEST SECTIONS. THE STUDY IS TENTATIVELY PROGRAMMED FOR FIVE YEARS. /BPR/

  • Supplemental Notes:
    • Hpr-1(8) ItEM 7, NO 905
  • Corporate Authors:

    Utah State Department of Highways

    757 West Second South
    Salt Lake City, UT  United States  84104

    Bureau of Public Roads /US

    400 7th Street, SW
    Washington, DC  United States  20590
  • Authors:
    • Delis, W R
  • Publication Date: 1969-8

Subject/Index Terms

Filing Info

  • Accession Number: 00210422
  • Record Type: Publication
  • Source Agency: Bureau of Public Roads /US
  • Files: TRIS
  • Created Date: Jan 5 1970 12:00AM