Analysis of load-induced strains in a hot mix asphalt perpetual pavement : final report, April 2009.

Details

• Creators:
  Crovetti, James A.
• Corporate Creators:
  Marquette University. Transportation Research Center
• Subject/TRT Terms:
  • Hot mix asphalt
  • Perpetual pavements
  • Load tests
  • Pavements, Asphalt--Wisconsin--Testing
• Publication/ Report Number:
  FEP 01-09
• Resource Type:
  Tech Report
• Geographical Coverage:
  Wisconsin
• Edition:
  Final report; June 2005-Apr. 2009.
• Corporate Publisher:
  Wisconsin. Dept. of Transportation. Bureau of Technical Services
• Abstract:
  This report presents the findings of a research study conducted to investigate the structural performance of a 275 mm hot ; mix asphalt perpetual pavement constructed as part of the WIM bypass lane at the Kenosha Safety & Weigh Station ; Facility. Two separate test sections were constructed using variable binder types and in-place air voids. Asphalt strain ; sensors were fabricated at Marquette University and installed during the construction of the HMA pavement. Sensors were ; positioned within the outer wheel path and located at the bottom of the 275 mm HMA pavement and at the interface ; between the lower layers at a depth of approximately 175mm from the surface. Strain sensors were oriented in both the ; transverse and longitudinal directions. A total of 16 strain sensors were installed during construction. Of these, only three ; survived to provide strain data under traffic loadings. ; Deflection data obtained from FWD testing was used as comparative measures to strain measurements obtained during ; testing and to estimate the combined dynamic HMA layer moduli at the time of testing and to develop monthly trends of ; dynamic HMA layer moduli as a function of the expected mean monthly mid-depth pavement temperature. A comparative ; analysis of measured strains to those predicted from FWD measurements provided generally good agreement. A ; mechanistic appraisal of the constructed test sections was completed using the outputs of the EVERSTRESS pavement ; analysis program. This analysis computed the expected monthly damage induced by the application of 521,000 monthly ; ESAL loadings. The results of the mechanistic appraisal indicate the expected service life to 50% bottom-up fatigue ; cracking is in excess of 90 years for sections with air voids of 4% within the lower layers. If the air void content increases ; to 5% - 6% in the lower layers, the expected fatigue life may be significantly reduced to between 13 – 32 years.
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• Format:
  PDF
• Funding:
  FEP-02-02
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/17224/dot_17224_DS1.pdf
• File Type:
  [PDF - 864.50 KB]
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha256:b27112b57d46b2457b3193b2147d70c199d24a6b12c0ca44b65a77a5be5200c4