PREDICTION OF LOW TEMPERATURE AND THERMAL-FATIGUE CRACKING IN FLEXIBLE PAVEMENTS

IN THIS RESEARCH EFFORT, A SYSTEM WAS DEVELOPED TO PREDICT THE AMOUNT OF TEMPERATURE CRACKING IN ASPHALT CONCRETE SURFACES THROUGHOUT THEIR SERVICE LIVES USING LABORATORY MATERIALS DATA AND AVAILABLE WEATHER INFORMATION. BASICALLY, FOUR MODELS WERE DEVELOPED TO FORM THE SYSTEM. THE CONSIDERATION OF THERMAL-FATIGUE CRACKING (MODEL IV) DUE TO DAILY TEMPERATURE CYCLING MAKES THE SYSTEM AN IMPROVEMENT OVER OTHER AVAILABLE TECHNIQUES IN THIS FIELD. IN ANALYZING THE SYSTEM, THE MOST IMPORTANT WEATHER PARAMETERS WITH RESPECT TO TEMPERATURE CRACKING WERE FOUND TO BE SOLAR RADIATION AND AIR TEMPERATURE. THE MOST IMPORTANT ASPHALT CONCRETE PROPERTIES WERE FOUND TO BE THE THERMAL COEFFICIENT OF CONTRACTION AND ASPHALT PENETRATION AND TEMPERATURE-SUSCEPTIBILITY. THE ADOPTION OF THE SYSTEM BY THE HIGHWAY AGENCIES WHO ARE CONCERNED WITH TEMPERATURE CRACKING SEEMS WARRANTED. THE SYSTEM IS MADE AVAILABLE IN THE FORM OF A SINGLE COMPUTER PROGRAM AND IS EASY TO ADOPT SINCE MOST OF THE NECESSARY INFORMATION FOR USING THE COMPUTER PROGRAM NEEDS TO BE COLLECTED ONLY ONE TIME. THE SYSTEM CAN BE A DECISION-MAKER TO ACCEPT OR REJECT AN ASPHALT SUPPLIER; IT CAN ALSO HELP THE ENGINEER IN DESIGNING AN ASPHALT CONCRETE MIXTURE THAT WILL BEST FIT THE SURROUNDING ENVIRONMENTAL CONDITIONS. ABOVE ALL, THE USE OF THE PROPOSED SYSTEM WILL REDUCE MAINTENANCE COSTS. /AUTHOR/

  • Corporate Authors:

    Texas State Department of Highways & Public Transp

    11th and Brazos Streets
    Austin, TX  USA  78701

    Texas Transportation Institute

    Texas A&M University System, 1600 E Lamar Boulevard
    Arlington, TX  USA  76011

    University of Texas, Austin

    Center for Highway Research, 200 West 21st Street
    Austin, TX  USA  78712

    Federal Highway Administration

    1200 New Jersey Avenue, SE
    Washington, DC  USA  20590
  • Authors:
    • Shahin, M Y
    • McCullough, B F
  • Publication Date: 1972-8

Media Info

  • Features: Figures; References; Tables;
  • Pagination: 225 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00206075
  • Record Type: Publication
  • Report/Paper Numbers: No 123-14 Res Rept
  • Files: TRIS, ATRI, USDOT, STATEDOT
  • Created Date: Aug 15 1973 12:00AM