OXIDATION CRACKING OF ASPHALT PAVEMENT

AN INVESTIGATION IS MADE INTO THE WEATHERING EFFECTS OF AMBIENT AIR, HOT AIR, AND WATER ON AN ASPHALT-AGGREGATE MIXTURE, IN ORDER TO DETERMINE THE MECHANISM OF DETERIORATION OF SUCH A SYSTEM. CHANGES IN SONIC MODULUS AND PERMEABILITY WERE STUDIED. RESULTS SHOW THAT THE SONIC TEST METHOD CAN BE USED TO INVESTIGATE WEATHERING EFFECTS; WEATHERING WITH AMBIENT AIR OR WATER ALONE AT 70 DEGREES F HAS NO EFFECT ON THE SONIC MODULUS; PERMEABILITY INCREASES UPON WEATHERING WITH AIR AND DECREASES UPON WEATHERING WITH WATER; WEATHERING WITH HOT AIR CAUSES A SLIGHT DECREASE IN THE SONIC MODULUS; AND AFTER SUBJECTING THE ASPHALT- AGGREGATE SYSTEM TO A DESTRUCTIVE TEST, THE SYSTEM WILL "HEAL" UNDER THE APPLICATION OF A CONFINING PRESSURE. /RRL/

  • Supplemental Notes:
    • 55 Pp, 15 FIG, 9 TAB, 3 REF
  • Corporate Authors:

    Mississippi State University, Mississippi State

    Mississippi State, MS  United States  39762
  • Authors:
    • Boyd, H J
  • Publication Date: 1968-3

Subject/Index Terms

Filing Info

  • Accession Number: 00211199
  • Record Type: Publication
  • Source Agency: Road Research Laboratory /UK
  • Files: TRIS
  • Created Date: Jun 11 1971 12:00AM