Microdamage healing in asphalt and asphalt concrete, Volume 2 : laboratory and field testing to assess and evaluate microdamage and microdamage healing

Details

• Creators:
  Williams, D. ; Little, D. N. ; Lytton, R. L. ; Kim, Y. R. ; Kim, Y.
• Corporate Contributors:
  Texas Transportation Institute ; University of Wyoming Research Corporation. Western Research Institute ; United States. Federal Highway Administration. Wyoming Division
• Subject/TRT Terms:
  • Asphalt
  • Asphalt concrete
  • Pavement cracking
  • Evaluation and assessment
  • Laboratory tests
  • Field tests
  • Asphalts
  • Bituminous concretes
  • Crack propagation
  • Evaluation
  More +
• Publication/ Report Number:
  FHWA-RD-98-142;Research report 7229
• Resource Type:
  Tech Report
• Geographical Coverage:
  Wyoming
• Edition:
  Final May 1998
• Corporate Publisher:
  Turner-Fairbank Highway Research Center
• Abstract:
  Volume 2 documents laboratory and field testing that provides the evidence that microdamage healing is real and measurable and that it has a significant impact on pavement performance. Part of the laboratory experiments to evaluate the impact of rest periods were performed at North Carolina State University (NCSU). The experiment included two very different asphalt binders: AAD and AAM. The experiment cleaarly demonstrated that the rest periods introduced after fatigue damage allowed significant recovery in the flexural and dynamic modulus. The recovery was attributed to the healing of microcracks within the sample.
• Format:
  PDF
• Funding:
  DTFH61-92-C-00170
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/15431/dot_15431_DS1.pdf
• File Type:
  [PDF - 6.97 MB]
• Collection(s):
  Federal Highway Administration ; US Transportation Collection
• Main Document Checksum:
  urn:sha-512:c7207dd35a378d65156b2ceffc2d654e34ee5f4a1b1e884c62e680c39fa8ce49a6e04afaafaa9299254bdb93cfbfea683be6bd49a9dc398086821f91a786c536