Study and Evaluation Material Response in Hot Mix Asphalt Based on Field Instrumentation (Phase 3)

Details

• Creators:
  Tarefder, Rafiqul A. ; Khan, Zafrul ; Biswas, B S Pushpendue
• Corporate Creators:
  University of New Mexico, Albuquerque. Department of Civil Engineering
• Corporate Contributors:
  New Mexico. Department of Transportation. Research Bureau ; United States. Department of Transportation. Federal Highway Administration
• Subject/TRT Terms:
  Calibration Falling Weight Deflectometers Hot Mix Asphalt Instrumentation Pavements Strain (Mechanics) Stresses Weather Conditions
• Publication/ Report Number:
  R9200400
• Resource Type:
  Tech Report
• Geographical Coverage:
  New Mexico ; United States
• Edition:
  Final Report
• Corporate Publisher:
  New Mexico. Department of Transportation. Research Bureau
• Abstract:
  This report documents the stress-strain responses from sensors embedded inside different layers of a pavement section on Interstate I-40, near Albuquerque, New Mexico, during the Phase 3 of this project. Pavement responses were measured under real time traffic loads and routine Falling Weight Deflectometer (FWD) test loads at various weather conditions. Field distress data were collected at regular intervals. Occasionally, field cores were collected and tested in the laboratory. Results show that the pavement responses initially increased after construction but continued to decrease over time due to damage. The backcalculated FWD modulus of asphalt concrete was also observed to decrease over the time due to damage. Damages in pavement layers were quantified by combining sensor data with the FWD modulus. The cross-anisotropic viscoelastic properties of asphalt layers were obtained directly from FWD and field sensor data. Good agreements were observed between the cross-anisotropic properties of asphalt concrete (AC) obtained from the field data and the laboratory core testing data. This study also evaluated the Pavement ME Design (PMED) guide distress model coefficients based on the field observed distresses. Distress coefficients of the bottom-up fatigue cracking, International Roughness Index (IRI), and Top-down cracking of PMED were compared to the default PMED coefficients. The I-40 calibration coefficients for rutting compare well to the default values but the I-40 coefficients for fatigue, top-down cracking, and IRI differ significantly from the default coefficients.
• Format:
  PDF
• Funding:
  CO6211
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha-512:49ac9bfaf012af49eb6421e12f9061a9b1d71beb008616dba72dfad352bbe55dcfd692c7dc35d2288a093b092164c4a219addafaf4f1d205dda9cad2dc1aa73d
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/85871/dot_85871_DS1.pdf
• File Type:
  [PDF - 9.92 MB ]