EVALUATION OF AIR-BLOWN ASPHALTS TO REDUCE THERMAL CRACKING OF ASPHALT PAVEMENTS

The relatively severe environment in Saskatchewan, Canada, provides thermal stresses which result in a major problem of transverse cracking in asphaltic concrete pavements. Approximately 60 percent of the highway system is constructed on glacial till soils, 30 percent on lacustrine clays, and the remainder on lacustrine silts and fluvio-lacustrine granular deposits. Climatic conditions range from semi-arid in the southwest to subhumid in the northeast with a wide temperature range. This paper describes the extent of the problem and an evaluation of air-blown asphalt cement as a means of alleviating it.

• Supplemental Notes:
  • Proceedings of the Association of Asphalt Paving Technoloists' Technical Session held in New Orleans, La on Feb 16-18, 1976.
• Authors:
  • Clark, M F
  • CULLEY, R W
• Publication Date: 1976

Media Info

• Features: References;
• Pagination: p. 530-555
• Serial:
  • Chemical Abstracts
  • Volume: 45

Subject/Index Terms

• TRT Terms: Asphalt; Asphalt pavements; Climate; Cracking; Evaluation; Lacustrine deposits; Pavement cracking; Pavements; Thermal stresses; Till; Ventilators
• Uncontrolled Terms: Crack propagation; Thermal effects
• Old TRIS Terms: Air blowing; Air-blown asphalts
• Subject Areas: Highways; Materials; Pavements;

Filing Info

• Accession Number: 00158344
• Record Type: Publication
• Source Agency: Engineering Index
• Report/Paper Numbers: Proceeding
• Files: TRIS
• Created Date: Oct 13 1977 12:00AM