VERTICAL MOVEMENTS AND CRACK WIDTH-CHANGES ON HIGHWAY PAVEMENT SURFACES

THE RESULTS OF PERIODIC PAVEMENT ELEVATION AND CRACK-WIDTH MEASUREMENTS TAKEN OVER A PERIOD OF THREE TO FOUR YEARS ARE PRESENTED. BOTH SURFACE ELEVATION AND CRACK-WIDTH CHANGES ARE SHOWN TO FOLLOW A SIMILAR SEASONAL CYCLE. RESULTS SHOW THAT THE SUBGRADES STUDIED WERE FROZEN AS CLOSED SYSTEMS. IT IS SHOWN THAT WITH CLOSED SUBGRADE FREEZING THE RESULTING VERTICAL DISPLACEMENT OF THE PAVEMENT MAY BE EITHER POSITIVE OR NEGATIVE DEPENDING ON THE MOISTURE CONTENT OF THE SUBGRADE. RESULTS ARE PRESENTED WHICH INDICATE THAT SEASONAL CHANGES IN THE WIDTH OF TRANSVERSE PAVEMENT CRACKS CANNOT BE FULLY EXPLAINED IN TERMS OF SIMPLE THERMAL EXPANSION AND CONTRACTION IN THE ASPHALTIC CONCRETE PAVEMENT. INDIRECT EVIDENCE IS PRESENTED WHICH SUGGESTS THAT HORIZONTAL FREEZING SHRINKAGE IN A SUBGRADE CONTRIBUTES TO THE SEASONAL CYCLE OF CRACK-WIDTH CHANGES. /AUTHOR/

  • Supplemental Notes:
    • Vol 6, No 3, PP 253-270
  • Authors:
    • Rix, H H
  • Publication Date: 1969-8

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Filing Info

  • Accession Number: 00207050
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Jan 12 1970 12:00AM