Laboratory investigation of a novel method to accelerate healing in asphalt mixtures using thermal treatment.

Details

• Creators:
  Bhasin, Amit ; Narayan, Atul ; Little, Dallas N.
• Corporate Creators:
  Texas Transportation Institute
• Subject/TRT Terms:
  • Asphalt concrete
  • Asphalt additives
  • Binders Asphalt concrete--Cracking--Testing
  • Asphalt--Additives--Testing
  • Binders (Materials)--Testing
• Publication/ Report Number:
  SWUTC/09/476660-00005-1
• Resource Type:
  Tech Report
• Geographical Coverage:
  Texas
• Corporate Publisher:
  Southwest Region University Transportation Center (U.S.)
• Abstract:
  Asphalt binders have an inherent ability to reverse damage in the form of micro-cracks that is caused ; due to the repeated action of external loads. This reversal occurs during rest periods between load ; cycles. The phenomenon of crack reversal is referred to as autogenous or self-healing. The main ; objective of this project was to apply established principles of healing to investigate a novel technique ; to accelerate reversal of accumulated micro-crack in asphalt mixtures. This technique was developed ; and evaluated using a laboratory scale set up. Laboratory tests were used to evaluate the impact of ; thermal treatment on the fatigue cracking life of asphalt mixtures. Results from this study indicate that ; for two out of the three different types of asphalt mixtures, intermittent application of the thermal ; treatment resulted in approximately 50% increase in the fatigue cracking life of the mixture.
• Format:
  PDF
• Funding:
  DTRT07-G-0006
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/17457/dot_17457_DS1.pdf
• File Type:
  [PDF - 1.86 MB]
• Collection(s):
  University Transportation Centers ; US Transportation Collection
• Main Document Checksum:
  urn:sha-512:a960742c6b8c1df2348634940098cb60dc3c35750c21bc47f23df9df84258f266fb52b4caa0dfc7e114bb6baeefdeb7f94c499577dc94cc75d97eb815cbed60c