SIZE AND THERMORHEOLOGICAL RELATIONSHIPS OF ASPHALTIC CONCRETE

A STUDY WAS CONDUCTED TO INVESTIGATE THE INFLUENCE OF THE LENGTH TO DIAMETER RATIO (L/D) OF THE FIELD CORES ON THE ULTIMATE COMPRESSIVE STRENGTH AND THE DYNAMIC AND STATIC RHEOLOGICAL STRENGTH PROPERTIES OF BITUMINOUS CONCRETE SPECIMENS ON THE PHENOMENOLOGICAL LEVEL. THE OBJECTIVE IS TO DETERMINE THE RELATIONSHIPS BETWEEN THE RATIO OF SAMPLE HEIGHT TO DIAMETER AND THE STRENGTH PARAMETERS OF BITUMINOUS MIXES AT DIFFERENT EXPERIMENTAL TEMPERATURES. THE BITUMINOUS CONCRETE SAMPLES INVESTIGATED WERE PREPARED USING TWO PENETRATION GRADES OF ASPHALT. SUGGESTIONS ARE MADE AS TO PRACTICAL MEANS FOR INCORPORATING THE RESULTS OF THIS STUDY INTO HIGHWAY TESTING PROCEDURES. TABLES AND CHARTS DEVELOPED FOR THE EXPERIMENTAL DATA ARE PREPARED SO THAT THEY HAVE A DIRECT APPLICATION TO HIGHWAY MATERIAL TESTING PROGRAMS. SUCH DATA IS NEEDED AS THE MECHANICAL PROPERTIES OF BITUMINOUS CONCRETE ARE SIGNIFICANTLY CHANGED BY THE TESTING CONDITIONS UTILIZED. BECAUSE BOTH TYPES OF EXPERIMENTS ARE USED BY HIGHWAY TECHNOLOGISTS, THE L/D CORRECTION CHARTS FOR THE CONVENTIONAL FAILURE TESTS AND NON-FAILURE RHEOLOGIC STRENGTH PARAMETERS EXPERIMENTS HAVE BEEN DEVELOPED FOR SEVERAL OHIO ASPHALTIC MIXTURES OVER A RANGE OF TEMPERATURES. THE CREEP AND DYNAMIC RHEOLOGICAL PARAMETERS ARE EVALUATED AT SMALL DEFORMATIONS OVER A WIDE TEMPERATURE RANGE COMPARABLE TO FLEXIBLE PAVEMENT SERVICE CONDITIONS, WHILE THE DESTRUCTIVE TESTS YIELD VALUES OF COMPRESSIVE STRENGTH AND ELASTIC MODULI OF THE MATERIALS OVER A RANGE OF IMPOSED STRAIN AND TEMPERATURES.

  • Supplemental Notes:
    • Hpr-1/3/, BPR-29, STATE EES-258
  • Corporate Authors:

    Ohio State University, Columbus

    190 North Oval Drive
    Columbus, OH  USA  43210

    Bureau of Public Roads /US

    400 7th Street, SW
    Washington, DC  USA  20590
  • Authors:
    • Pagen, C A
  • Publication Date: 1968-2

Subject/Index Terms

Filing Info

  • Accession Number: 00210391
  • Record Type: Publication
  • Source Agency: Bureau of Public Roads /US
  • Files: TRIS
  • Created Date: Apr 12 1994 12:00AM