Temperature Prediction and Adjustment Procedures for Asphalt Concrete Pavements

Details

• Corporate Creators:
  United States. Federal Highway Administration
• Subject/TRT Terms:
  • Asphalt concrete pavements
  • Temperature
  • Adjustment factors
  • Deflection tests
  • Prediction
• Publication/ Report Number:
  FHWA-RD-01-081
• Resource Type:
  Brief
• Geographical Coverage:
  United States
• Corporate Publisher:
  Turner-Fairbank Highway Research Center
• Abstract:
  Deflection testing is used to evaluate a variety of pavement characteristics, including axle or vehicle load capacity, structural life, and uniformity. Deflection results from all pavements are dependent on seasonal variations that affect the underlying aggregate and subgrade. The results from asphalt pavements are also dependent on the temperature of the asphalt. To effectively analyze deflection results, they must be adjusted to account for seasonal and temperature variations. Over the years, a number of methods have been developed to measure the asphalt temperature and to adjust the deflection results for the effects of temperature. Deflection equipment and analysis methodologies have also continued to improve over the years, but the study of the effects of temperature on the deflection of asphalt pavement has generally been limited in scope or location. To address this issue, the Long Term Pavement Performance (LTPP) program developed a model for predicting the temperature within an asphalt layer from surface temperature data collected during routine deflection testing, along with procedures to adjust deflection testing results for temperature. The temperature prediction model and adjustment procedures were then used as the basis for proposed standards that have been submitted to the American Association of State Highway and Transportation Officials (AASHTO) Subcommittee on Materials for possible adoption.
• Format:
  PDF
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/14510/dot_14510_DS1.pdf
• File Type:
  [PDF - 223.03 KB]
• Collection(s):
  Federal Highway Administration ; US Transportation Collection
• Main Document Checksum:
  urn:sha-512:1a01b4671bac633e0a0c5ebec0de8453329c98516ed9461c5be447d87fce5e78bddbef5843c7b89a6436e700f0d417bb841d757c49f8ca48dd6253b5ae1b990d