LTPP Computed Parameter: Dynamic Modulus

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.

• Record URL:
  http://www.fhwa.dot.gov/publications/research/infrastructure/pavements/ltpp/10035/10035.pdf
• 
• Record URL:
  https://rosap.ntl.bts.gov/view/dot/35741
• Corporate Authors:

  Nichols Consulting Engineers, Chartered

  1885 South Arlington Avenue, Suite 111
  Reno, NV  United States  89509

  Federal Highway Administration

  Turner-Fairbank Highway Research Center, 6300 Georgetown Pike
  McLean, VA  United States  22101
• Authors:
  • Kim, Y Richard
  • Underwood, B
  • Far, M Sakhaei
  • Jackson, N
  • Puccinelli, J
• Publication Date: 2011-9

Language

• English

Media Info

• Media Type: Digital/other
• Edition: Final Report
• Features: Appendices; Figures; References; Tables;
• Pagination: 268p

Subject/Index Terms

• TRT Terms: Dynamic modulus of elasticity; Hot mix asphalt; Mathematical models; Neural networks; Pavement design; Pavement performance
• Identifier Terms: Long-Term Pavement Performance Program; Mechanistic-Empirical Pavement Design Guide
• Subject Areas: Design; Highways; Pavements; I22: Design of Pavements, Railways and Guideways;

Filing Info

• Accession Number: 01356762
• Record Type: Publication
• Report/Paper Numbers: FHWA-HRT-10-035, Report No. 1240.10
• Contract Numbers: DTFH61-02-D-00139
• Files: NTL, TRIS, ATRI, USDOT
• Created Date: Nov 9 2011 2:34PM