DESIGN CONSIDERATIONS FOR ASPHALT PAVEMENTS TO MINIMIZE FATIGUE DISTRESS UNDER REPEATED LOADING

RESULTS ARE REPORTED ON RESEARCH IN FATIGUE DISTRESS ASSOCIATED WITH REPEATED DEFLECTIONS IN ASPHALT-CONCRETE PAVEMENTS. RESULTS OF RESEARCH ARE DESCRIBED TO ILLUSTRATE' /1/ THE BEHAVIOR CHARACTERISTICS OF BOTH TREATED AND UNTREATED PAVING MATERIALS UNDER TRANSIENT LOADING, /2/ THE APPLICABILITY OF ELASTIC THEORY TO THE ANALYSIS OF THE RESPONSE OF PAVEMENTS TO LOADING REPRESENTATIVE OF MOVING TRAFFIC, AND /3/ SOME OF THE FACTORS INFLUENCING THE FATIGUE BEHAVIOR OF ASPHALT CONCRETE TYPICAL OF THAT USED IN HEAVY- DUTY HIGHWAYS IN CALIFORNIA. SPECIFIC RESULTS ARE PRESENTED ILLUSTRATING /1/ THE INFLUENCE OF TIME-OF-LOADING AND TEMPERATURE ON THE STIFFNESS /OR RHOLOGIC/ CHARACTERISTICS OF ASPHALT CONCRETE, SINCE BOTH FACTORS INFLUENCE THE BEHAVIOR OF THIS MATERIAL IN THE PAVEMENT, /2/ THE BEHAVIOR OF UNTREATED AND TREATED AGGREGATES AND FINE-GRAINED SOILS IN REPEATED-LOAD TRIAXIAL COMPRESSION TESTS IN THE LABORATORY, /3/ THE BEHAVIOR OF SMALL PROTOTYPE PAVEMENTS WHEN SUBJECTED TO REPEATED-LOAD PLATE TEST, AND THE PREDICTION OF DEFLECTIONS IN THESE PAVEMENTS BY MEANS OF LABORATORY TEST RESULTS FOR THE MATERIALS USED IN THEM TOGETHER WITH THREE-LAYER ELASTIC THEORY, AND /4/ THE EFFECTS OF MIXED VARIABLES AND TEMPERATURE ON THE FATIGUE RESPONSE OF ASPHALT CONCRETE AND THE APPLICABILITY OF CUMULATIVE DAMAGE HYPOTHESIS TO REPRESENT THE MULTIPLICITY OF LOADING CONDITIONS ENCOUNTERED IN ACTUAL PAVEMENTS. A DESIGN PROCEDURE BASED ON THESE INVESTIGATIONS IS SUGGESTED TO INCORPORATE THE FATIGUE FACTOR IN ASPHALT-CONCRETE PAVEMENT DESIGN. THIS PROCEDURE IS BASED ON LABORATORY- DETERMINED RESILIENT OR ELASTIC CHARACTERISTICS OF THE MATERIALS COMPRISING THE STRUCTURAL PAVEMENT SECTION, THE USE OF ELASTIC THEORY TO ESTIMATE THE STRESSES AND STRAINS OCCURRING IN THE VARIOUS PAVING ELEMENTS, AND A KNOWLEDGE OF THE FATIGUE RESPONSE OF ASPHALT-CONCRETE PAVING MATERIALS.

  • Supplemental Notes:
    • pp 1-52, 40 FIG, 50 REF
  • Corporate Authors:

    University of New Mexico, Albuquerque

    Fourth Paving Conference Proceedings
    Albuquerque, NM  United States  87131
  • Authors:
    • Monismith, C L
  • Publication Date: 1966-12

Subject/Index Terms

Filing Info

  • Accession Number: 00205463
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Aug 30 1994 12:00AM