Evaluation of Mississippi Asphalt Mixture Thermal Properties for Pavement ME Design - Phase I

Details

• Creators:
  Heitzman, Michael ; Gatiganti, Surendra C ; Moraes, Raquel ; Gu, Fan
• Corporate Creators:
  Auburn University. National Center for Asphalt Technology
• Corporate Contributors:
  Mississippi Department of Transportation
• Subject/TRT Terms:
  • Asphalt mixtures
  • Climate
  • Evaluation and assessment
  • Mechanistic-empirical pavement design
  • Pavement cracking
  • Pavement performance
  • Rutting
  • Thermal conductivity
  • Thickness
  • Asphalt concrete
• Resource Type:
  Tech Report
• Geographical Coverage:
  Mississippi ; United States
• Edition:
  9 months
• Corporate Publisher:
  Auburn University. National Center for Asphalt Technology
• Abstract:
  This study compared AASHTOWare Pavement ME Design predicted performance of five Mississippi pavements using measured and default asphalt concrete thermal properties. Thermal conductivity and heat capacity values observed from literature vary over a wide range, but the measured values for the Mississippi pavements were similar to the default values. The measured heat capacity values had a 0% to 9% effect on asphalt rutting and 0% to 12% effect on total rutting for the Mississippi traffic, climate, and pavement inputs. Predicted thermal cracking was also affected. Latin square experimental design was adopted to study the individual effect of climate, pavement layer thickness, and measured thermal conductivity on predicted rutting performance. Results of the Latin square design showed that asphalt layer thickness dominated the predicted performance, and climate and asphalt mixture thermal properties were also significant.
• Format:
  PDF
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/61711/dot_61711_DS1.pdf
• File Type:
  [PDF - 966.14 KB]
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha256:4d27db184462664848bbb7b18df8ccf5b9cb2869b2f31b7ad4b06a80f72f77fa