Development of Modulus-to-Temperature Relations for HMA Mixtures in Wisconsin

This report presents the findings of a research study conducted to develop modulus-to-temperature relations for Hot Mix Asphalt (HMA) mixtures used in Wisconsin. Surface deflection data gathered from in-place HMA pavements was used to estimate the resilient modulus of the HMA layer at the various test temperatures. Laboratory resilient modulus testing was also conducted on recovered HMA cores to establish trends of HMA resilient modulus as a function of test temperature and load frequency. Prediction equations for estimating modulus-to-temperature trends were developed from laboratory testing to account for mixture-specific parameters, including fines content, air voids and binder content. Estimations of HMA modulus-to-temperature trends based solely on nondestructive deflection data were found to correlate with laboratory trends for some, but not all of the projects tested. Observed estimation errors were deemed due to variations in the thickness and/or stiffness of lower pavement layers which were not measured during field testing. A simple process for developing site-specific variations in HMA resilient modulus in response to monthly air and pavement temperature changes is presented. These monthly variations represent valuable inputs for mechanistic-empirical performance analysis.

• Record URL:
  http://wisdotresearch.wi.gov/wp-content/uploads/03-14modtotemp-f.pdf
• Record URL:
  http://minds.wisconsin.edu/bitstream/handle/1793/53877/WHRP_05-11_Modulus_to_Temp_Relations.pdf
• 
• Corporate Authors:

  Marquette University

  Department of Civil and Environmental Engineering, P.O. Box 1881
  Milwaukee, WI  United States  53201-1881

  Wisconsin Department of Transportation

  4802 Sheboygan Avenue, P.O. Box 7910
  Madison, WI  United States  53707-7910

  Federal Highway Administration

  1200 New Jersey Avenue, SE
  Washington, DC  United States  20590
• Authors:
  • Crovetti, James A
  • Hall, Kathleen T
  • Williams, Christopher
• Publication Date: 2005-9

Language

• English

Media Info

• Media Type: Print
• Edition: Final Report
• Features: Figures; References; Tables;
• Pagination: 72p

Subject/Index Terms

• TRT Terms: Air voids; Asphalt pavements; Binder content; Core samples; Deflection; Equations; Fines (Materials); Hot mix asphalt; Laboratory tests; Mechanistic design; Modulus of resilience; Temperature
• Geographic Terms: Wisconsin
• Subject Areas: Design; Highways; Materials; Pavements; I22: Design of Pavements, Railways and Guideways; I23: Properties of Road Surfaces; I31: Bituminous Binders and Materials;

Filing Info

• Accession Number: 01013383
• Record Type: Publication
• Report/Paper Numbers: WHRP 05-11
• Contract Numbers: WHRP Project 0092-03-14
• Files: TRIS, USDOT, STATEDOT
• Created Date: Dec 22 2005 10:11AM