Temperature Correction Factor for Pavement Moduli Back-Calculated from Falling Weight Deflectometer Test

Falling Weight Deflectometer (FWD) deflections were collected from four in-service pavements in Shanghai. Moduli backcalculated with MODULUS 6.0 from all sites were used to develop the temperature correction factor. For validation purposes, moduli were obtained from a newly reconstructed pavement. Resilient moduli conducted with MTS 810 were used to verify the correction factor. There is a good exponential relationship between the pavement layer modulus and the asphalt layer temperature. The temperature correction factor in Shanghai is proposed. Comparisons with other reported temperature correction factors show satisfying agreement. The maximal difference error for two correction factors is 6.788% at temperatures lower than 20°C. The differences between corrected moduli and measured moduli tested in August and December are 712MPa and 1503MPa, respectively. The discrepancies between two moduli are due to the FWD test time and test site, and the mechanic states of the field and laboratory test.

Language

  • English

Media Info

  • Media Type: Web
  • Features: References;
  • Pagination: pp 1080-1090
  • Monograph Title: CICTP 2014: Safe, Smart, and Sustainable Multimodal Transportation Systems

Subject/Index Terms

Filing Info

  • Accession Number: 01532946
  • Record Type: Publication
  • ISBN: 9780784413623
  • Files: TRIS, ASCE
  • Created Date: Jul 2 2014 3:02PM