DAMAGE MODEL FOR PREDICTING TEMPERATURE CRACKING IN FLEXIBLE PAVEMENTS

A model for predicting temperature cracking has been developed. Temperature cracking as predicted by the model is the appropriate addition of low temperature cracking, which occurs when the thermal tensile stress exceeds the asphalt concrete tensile strength; and thermal-fatigue cracking, which occurs when the thermal-fatigue distress due to daily temperature cycling exceeds the asphalt concrete fatigue resistance. During model development, stochastic variations in material properties were considered. The model has since been computerized. Inputs to the program are the basic material properties and conventional weather variables that can be easily obtained. The major output from the program is the temperature cracking in ft/1,000 sq ft (m/1000 sq m) as a function of age from construction. Analysis of the Ontario test roads and the Ste. Anne Test Road has shown the model predictions to be reasonable. The model is in a modular form so that any change that may develop through the advancement of asphalt concrete technology can be added without major revision of the basic framework.

Media Info

  • Media Type: Print
  • Features: Figures; References; Tables;
  • Pagination: pp 30-46
  • Monograph Title: Asphalt concrete pavement design and evaluation
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00095730
  • Record Type: Publication
  • ISBN: 0309023661
  • Files: TRIS, TRB
  • Created Date: Jul 2 1975 12:00AM