LTPP Computed Parameter: Dynamic Modulus

Details

• Creators:
  Kim, Y. Richard ; Underwood, B. ; Far, M. Sakhaei ; Jackson, N. ; Puccinelli, J.
• Corporate Creators:
  Nichols Consulting Engineers
• Corporate Contributors:
  United States. Department of Transportation. Federal Highway Administration. Turner-Fairbank Highway Research Center
• Subject/TRT Terms:
  • Dynamic modulus of elasticity
  • Hot mix asphalt
  • Mathematical models
  • Neural networks
  • Pavement design
  • Performance measurement
  • Long-Term Pavement Performance Program
  • Mechanistic-Empirical Pavement Design Guide
  • Research Hub
• Publication/ Report Number:
  FHWA-HRT-10-035
• Resource Type:
  Tech Report
• Geographical Coverage:
  North America ; United States
• Corporate Publisher:
  United States. Federal Highway Administration
• Abstract:
  The dynamic modulus, |E*|, is a fundamental property that defines the stiffness characteristics of hot mix asphalt (HMA) mixtures as a function of loading rate and temperature. In spite of the demonstrated significance of |E*|, it is not included in the current Long-Term Pavement Performance (LTPP) materials tables because the database structure was established before |E*| was identified as the main HMA property in the Mechanistic Empirical Pavement Design Guide (MEPDG). The objective of this study was to use readily available binder, volumetric, and resilient material properties in the LTPP database to develop |E*| estimates. This report provides a thorough review of existing prediction models. In addition, several models have been developed using artificial neural networks for use in this project. This report includes assessments of each model, quality control checks applied to the data, and the final structure and format of the dynamic modulus data added to the LTPP database. A program was also developed to assist in populating the LTPP database, and the details of the program are provided in this report.
• Format:
  PDF
• Funding:
  DTFH61-02-D-00139
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/35741/dot_35741_DS1.pdf
• File Type:
  [PDF - 11.38 MB]
• Collection(s):
  Federal Highway Administration
• Main Document Checksum:
  urn:sha-512:c847453aaebb28afc5c3a328768291e0ac4446b0a9a322c2a94ac3fa66a1aeff27cd4ff24acedc94021beda029205dee48fd42e286371920c7c315e09b59ca7e