TRANSVERSE CRACKING OF FLEXIBLE PAVEMENTS IN SASKATCHEWAN

AS THE INITIAL PHASE OF AN EXTENSIVE PROGRAM OF RESEARCH INTO TRANSVERSE CRACKING OF ASPHALTIC PAVEMENTS IN SASKATCHEWAN, THREE IN-SERVICE TEST SECTIONS WERE CONSTRUCTED IN 1963 TO EVALUATE THE EFFECT OF ASPHALT SOURCE, ASPHALT GRADE, AND PRIME RATE ON THE NUMBER AND PATTERN OF TRANSVERSE CRACKS. FROM OBSERVATIONS OF AIR PHOTOS OF THE CRACK PATTERNS, A SIGNIFICANT DIFFERENCE WAS FOUND BETWEEN THE NUMBER OF TRANSVERSE CRACKS PER MILE AND (1) ASPHALT SOURCE AND (2) ASPHALT GRADE. NO SIGNIFICANT CONCLUSIONS RESULTED FROM THE PRIME RATE TEST SECTIONS. A SECONDARY FINDING WAS THAT TRANSVERSE CRACKING BECAME EVIDENT AFTER PROLONGED COLD TEMPERATURES FOLLOWED BY A SUDDEN RISE IN TEMPERATURE RATHER THAN AFTER PROLONGED COLD TEMPERATURES ALONE. THIS INITIAL PHASE OF THE RESEARCH PROGRAM HAS POINTED THE DIRECTIONS THAT FUTURE, MORE SPECIFIC STUDIES OF THE FACTORS AFFECTING TRANSVERSE CRACKING SHOULD FOLLOW. /CGRA/RRL/

  • Supplemental Notes:
    • Technical REPT 3, PP 42, 4 FIG, 9 TAB, 9 PHOT, 5 REF
  • Corporate Authors:

    Saskatchewan Dept Hwys, Regina /Canada

    ,    
  • Authors:
    • CULLEY, R W
  • Publication Date: 1966-6

Subject/Index Terms

Filing Info

  • Accession Number: 00211052
  • Record Type: Publication
  • Source Agency: Road Research Laboratory /UK
  • Files: TRIS
  • Created Date: Sep 1 1970 12:00AM