STRESS RELAXATION OF BITUMINOUS CONCRETE IN TENSION

ASPHALTIC CONCRETE HAS BEEN LARGELY STUDIED IN COMPRESSION THE EVALUATION OF RHEOLOGICAL PROPERTIES OF ASPHALTIC CONCRETE IN TENSION AIDS IN COMPLETING A PICTURE OF THIS COMPLICATED MATERIAL SYSTEM. A SIMPLE TEST METHOD, EMPLOYING A CONSTANT RATE OF EXTENSION WAS USED TO DETERMINE THE RELAXATION BEHAVIOR OF CERTAIN ASPHALT-AGGREGATE MIXTURES. EXPERIMENTAL RESULTS WERE THEN COMPARED WITH COMPRESSION TEST RESULTS CONDUCTED IN THE SAME MANNER. NONLINEAR VISCOELASTIC BEHAVIOR WAS EXPERIENCED IN BOTH TYPES OF TESTS AND THE EFFECT OF TEMPERATURE AND STRAIN ON NONLINEARITY WAS DETERMINED. IN TENSION THE NONLINEARITY INCREASED WITH DECREASING TEMPERATURE, WHEREAS IN COMPRESSION THE REVERSE WAS TRUE. A POSSIBLE EXPLANATION FOR REVERSAL OF THE TEMPERATURE DEPENDENCE OF THE NONLINEARITY INVOLVES INTERPARTICLE FRICTION AND LOW-TEMPERATURE "STRESS-RISER" EFFECTS.

Media Info

  • Media Type: Print
  • Features: Figures; Photos; References;
  • Pagination: pp 38-58
  • Monograph Title: Bituminous materials and mixes
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00210527
  • Record Type: Publication
  • Files: TRIS, TRB
  • Created Date: Dec 12 1994 12:00AM