A THERMAL STRESS RESISTANCE PARAMETER AS A MEASURE OF THE CRACK SUSCEPTIBILITY OF FLEXIBLE PAVEMENTS

THERMAL LOADINGS ARE AN IMPORTANT CAUSE OF STRESS AND FAILURE IN FLEXIBLE PAVEMENTS. WHEN A PAVEMENT IS SUBJECTED TO A TEMPERATURE GRADIENT, IT IS POSSIBLE FOR THE PAVEMENT TO DEVELOP CRACKS. IN ORDER TO PROVIDE AN INDEX THAT WILL EVALUATE A GIVEN PAVEMENT SURFACE, A THERMAL STRESS RESISTANCE PARAMETER CAN BE USED. THIS PARTICULAR PARAMETER INTERRELATES THE TENSILE STRENGTH, STIFFNESS MODULUS, COEFFICIENT OF THERMAL EXPANSION AND POISSON'S RATIO FOR MIXTURES. IT IS BASED ON THE CONCEPT OF THERMAL SHOCK EVALUATION OF MATERIALS ON A MACROSCOPIC SCALE. ALTHOUGH IT DOES NOT PREDICT PRECISELY WHEN A PAVEMENT WILL CRACK, IT DOES ILLUSTRATE THAT PAVEMENTS THAT HAVE CRACKED SHOW LOW VALUES OF THIS PARAMETER. /CGRA/

• Supplemental Notes:
  • Vol 13, pp 237-246, 4 FIG, 2 TAB, 10 REF
• Authors:
  • Breen, J J
  • Stephens, J E
• Publication Date: 1968-11

Media Info

• Serial:
  • Canadian Technical Asphalt Association, Proceeding
  • Publisher: POLYSCIENCE PUBLICATIONS INC.

Subject/Index Terms

• TRT Terms: Evaluation; Flexible pavements; Pavement cracking; Pavement performance; Pavements; Temperature gradients; Thermal stresses
• Uncontrolled Terms: Parameters
• Subject Areas: Highways; Materials; Pavements;

Filing Info

• Accession Number: 00210588
• Record Type: Publication
• Source Agency: CANADIAN GOOD ROADS ASSOCIATION
• Files: TRIS
• Created Date: Apr 16 1970 12:00AM