THE TENSILE BEHAVIOR OF A BITUMINOUS CONCRETE MODEL

USING A PREVIOUSLY DEVELOPED ANALYSIS OF A SOLID PARTICLE- ELASTOMERIC MATRIX COMPOSITE MATERIAL, A STUDY OF THE TENSILE BEHAVIOR OF ASPHALT WAS PERFORMED. THE ANALYSIS WAS USED TO CALCULATE THE MAXIMUM TENSILE STRESS IN THE CENTER OF A JOINT COMPOSED OF TWO METAL HEMISPHERES ADHERED BY A THIN BRIDGING LIGAMENT OF ASPHALT; THE JOINT WAS BEING STUDIED AS A SIMPLIFIED MODEL OF BITUMINOUS CONCRETE IN TENSION. THE ULTIMATE TENSILE STRESS SO DETERMINED WAS COMPARED TO THE ULTIMATE TENSILE STRENGTH OF THE SAME ASPHALT MEASURED IN A BUTT JOINT WITH METALLIC, CYLINDRICAL ADHERENDS. NO CORRELATION BETWEEN THE TWO STRENGTH FIGURES WAS OBTAINED. THE SAME ANALYSIS WAS ALSO USED TO CALCULATE THE STIFFNESS OF THE ASPHALT-HEMISPHERES JOINT; AGAIN, THE CORRELATION BETWEEN CALCULATED AND MEASURED VALUES WAS POOR. IT WAS CONCLUDED THAT THE THEORETICAL ANALYSIS HAS SERIOUS INADEQUACIES WHICH ARE ACCENTUATED BY THE EXTREME RATE SENSITIVITY OF ASPHALT. THE USEFULNESS OF THE ASPHALT- HEMISPHERE SYSTEM AS A MODEL FOR STUDYING CERTAIN TENSILE PHENOMENA IN BITUMINOUS CONCRETE WAS NOT DEMONSTRATED THOUGH THE NEED FOR SUCH A MODEL CONTINUES. /AUTHOR/

  • Supplemental Notes:
    • Hps-hpr-1/21/, 8, R2-23
  • Corporate Authors:

    Massachusetts Institute of Technology

    Department of Civil Engineering, 77 Massachusetts Avenue
    Cambridge, MA  USA  02139
  • Authors:
    • Lavoie, R P
  • Publication Date: 1965-9

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Filing Info

  • Accession Number: 00210332
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Jan 1 1994 12:00AM