EFFECT OF WATER ON BEHAVIOR OF SAND-ASPHALT MIXTURES UNDER REPEATED LOADING

THIS PAPER REVEIWS THE FUNDAMENTAL CONCEPTS RELATED TO ADHESION AND THE STRIPPING PHENOMENON IN BITUMINOUS MIXTURES. STRIPPING, WHICH MAY OCCUR IN ONLY A SMALL PORTION OF THE PAVEMENT, IS CONSIDERED A GREAT ECONOMIC LOSS AND ENGINEERING FAILURE IN TERMS OF PROPER MIXTURE DESIGN. THE FACTORS AFFECTING ADHESION AND ADHESION FAILURE ARE INNUMERALBE. THEY INCLUDE THE MATERIAL CHARACTERISTICS, CONSTRUCTION TECHNIQUES, AND DIVERSIFIED ENVIRONMENTAL CONDITIONS. DUE TO THE EXTREME COMPLEXITIES OF ADHESION AND ADHESION FAILURE PHENOMENA IN BITUMINOUS MIXTURES, A SPECIFIC ENGINEERING PROBLEM IS ANALYZED IN THIS REPORT AND THE VALIDITY OF THE ADHESION FAILURE CONCEPTS IS DISCUSSED. IN THE STUDY, A HOT-MIX SAND-ASPHALT MIXTURE THAT HAD SHOWN SEVERE DISTRESS AND DISINTEGRATION IN THE FIELD IS SUBJECTED TO NUMBEROUS LABORATORY TESTS TO EVALUATE THE CAUSES OF STRIPPING.THE RESULTS INDICATED THAT STANDARD TEST METHODS FOR EFFECT OF WATER ON COHESION OF COMPACTED MIXTURES DID NOT REVEAL ANY STRIPPING TENDENCIES. HOWEVER, THE APPLICATION OF DYNAMIC LOADING ON SATURATED MIXTURES RESULTED IN DRASTIC REDUCTION IN THE COMPRESSIVE STRENGTH. SIMILARLY, THE CREEP RESPONSE OF MIXTURES WAS AFFECTED BY THE NUMBER OF LOAD REPETITIONS. IT IS ALSO SHOWN THAT THE SOAKED SPECIMENS UNDER DYNAMIC LOADING EXHIBIT PERMANENT DEFORMATION THAT MAY LEAD TO FAILURE IN THE SAND-ASPHALT MIXTURE. /AUTHOR/

  • Digital Copy:
  • Supplemental Notes:
    • Paper sponsored by Committee on Effects of Natural Elements and Chemicals on Bitumen-Aggregate Combinations and presented at the 48th Annual Meeting.
  • Authors:
    • Majidzadeh, Kamran
    • Stander Jr, R R
  • Publication Date: 1969

Media Info

  • Media Type: Print
  • Features: Figures; References; Tables;
  • Pagination: pp 99-109
  • Monograph Title: Bituminous materials and mixes
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00211440
  • Record Type: Publication
  • Files: TRIS, TRB
  • Created Date: Sep 29 1994 12:00AM