Using AASHTOWare Pavement ME Design to Establish Pavement Thicknesses for Frost Protection in Different Climate Zones or Regions

AASHTOWare Pavement ME Design is a great tool that can be used to study many different aspects of pavements. The software uses structural, material, and climatic data to predict pavement distresses and performance. In addition to the distress predictions, the software performs several other intermediate analyses and calculates data that can be used to make design decisions. For instance, the enhanced integrated climatic model (EICM) within the software uses hourly climate data to model pavement temperature, resilient modulus adjustment factors, and freeze/thaw depths throughout the design life of a pavement. In this study, many Pavement ME Design projects were created to represent geographic locations throughout the U.S. The frost depth data were extracted from EICM outputs and used to establish a maximum frost depths cumulative distribution for the four long-term pavement performance (LTPP) climate regions. Pavement designers can use the cumulative distribution to determine the maximum total pavement thickness that is needed to protect any frost-susceptible subgrade materials beneath the pavement from frost, for a given level of reliability. Additionally, the mean and median frost depths were established for each climate region. Using these results, pavement engineers and designers can improve their decision making during the design stage, especially for regions or agencies that must account for frost.

Language

  • English

Media Info

  • Media Type: Web
  • Features: References;
  • Pagination: pp 43-51
  • Monograph Title: Airfield and Highway Pavements 2019: Design, Construction, Condition Evaluation, and Management of Pavements

Subject/Index Terms

Filing Info

  • Accession Number: 01717893
  • Record Type: Publication
  • ISBN: 9780784482452
  • Files: TRIS, ASCE
  • Created Date: Jul 18 2019 3:01PM