INITIAL EVALUATION OF THE EFFECT OF SYNTHETIC RUBBER ADDITIVES ON THE THERMORHEOLOGICAL PROPERTIES OF ASPHALT MIXTURES

RESULTS ARE PRESENTED OF THE INITIAL INVESTIGATION OF LINEAR VISCOELASTICITY PROPERTY AND THE OTHER RELATED MECHANICAL PROPERTIES OF 8 DIFFERENT KINDS OF ASPHALT MIXTURES (6.1 PERCENT AND 5.0 PERCENT ASPHALT CONTENT BY WEIGHT, HIGH AND LOW VISCOSITY, WITH AND WITHOUT ADDED RUBBER). AT 70 F THE VISCOSITY SHOWS THE MOST SIGNIFICANT EFFECT WHERE MIXTURES WITH LOW-VISCOSITY ASPHALT (AS MEASURED AT 77 F) YIELD HIGH CREEP COMPLIANCE, LOW ULTIMATE COMPRESSIVE STRENGTH AND LOW ULTIMATE TENSILE STRENGTH. MIXTURES WITH HIGH-ASPHALT CONTENT YIELD MODULUS, HIGH CREEP COMPLIANCE FOR THE HIGH VISCOSITY MIXTURES. AT 20 F, ASPHALT CONTENT AND HIGH VISCOSITY CONTRIBUTE TO THE HIGH ULTIMATE COMPRESSIVE STRENGTH AND HIGH ULTIMATE STRAIN. ALSO, AT 20 F, HIGH VISCOSITY AND VISCOSITY-ASPHALT CONTENT INTERACTION CONTRIBUTE TO THE HIGH CREEP COMPLIANCE. THE FINDING ALSO INDICATE THAT THE ASSUMPTION OF LINEAR VISCOELASTIC BEHAVIOR OF THE ASPHALT MIXTURES IS APPROXIMATELY HELD. RUBBER ADDITIVES DO NOT SHOW SIGNIFICANT EFFECT ON CREEP COMPLIANCES, ULTIMATE COMPRESSIVE STRENGTHS AND STRAINS, AND TENSILE STRENGTHS OF THE ASPHALT MIXTURES AT THE INITIAL PERIOD. /AUTHOR/

Media Info

  • Media Type: Print
  • Features: Appendices; Figures; References; Tables;
  • Pagination: pp 18-31
  • Monograph Title: Bituminous materials, mixes and compaction
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00211561
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Oct 26 1970 12:00AM