EFFECTS OF AGGREGATE SHAPE ON THE FATIGUE BEHAVIOR OF AN ASPHALTIC SURFACE MIXTURE

INVESTIGATION WAS CONDUCTED TO COMPARE THE FATIQUE BEHAVIOR OF ASPHALT CONCRETE MIXES CONTAINING FLAT, ELONGATED AGGREGATE PARTICLES TO MIXES CONTAINING EQUIDIMENSIONALLY SHAPED PARTICLES. THE COMPARISON WAS CARRIED OUT ON MIXES CONTAINING AGGREGATES WITH THREE DISTINCT PARTICLE SHAPES BY PERFORMING CONSTANT-DEFLECTION FATIGUE TESTS ON BEAMS USING A FLEXURAL-FATIGUE DEVICE. FLEXURAL STRENGTH TESTS WERE ALSO CONDUCTED AT DIFFERENT TEMPERATURES TO ISOLATE THE POSSIBLE EFFECT OF PARTICLE INTERLOCK. THE INVESTIGATION WAS LIMITED IN SCOPE BUT IT WAS FOUND THAT THE MIXES WITH FLAT, ELONGATED PARTICLES WERE MORE SUSCEPTIBLE TO FATIGUE CRACKING WHEN TESTED IN THE CONSTANT DEFLECTION MODE. /BPR/

  • Supplemental Notes:
    • Hpr-1(3), BPR-9, STATE NO 0362
  • Corporate Authors:

    Virginia Highway Research Council

    Charlottesville, VA  United States 

    Bureau of Public Roads /US

    400 7th Street, SW
    Washington, DC  United States  20590
  • Authors:
    • Maupin, G W
  • Publication Date: 1968-6

Subject/Index Terms

Filing Info

  • Accession Number: 00210401
  • Record Type: Publication
  • Source Agency: Bureau of Public Roads /US
  • Files: TRIS
  • Created Date: Nov 29 1994 12:00AM