SPR-4619: Back-calculated Dynamic Modulus Master Curve from the Time Histories of Falling Weight Deflectometer Surface Deflections

The analysis of deflection data collected by the falling weight deflectometer (FWD) provides a quick and reliable way of characterizing the properties of the asphalt layers as well as assessing the load-carrying capacity of existing pavement structures. This research will provide the back-calculation methodology of the |E*| master curve for the asphalt pavement layer using the time histories of FWD surface deflections and layered viscoelastic forward algorithms in an iterative dynamic back-calculation procedure.

Language

• English

Project

• Status: Active
• Funding: $243001
• Contract Numbers:

  SPR-4619

• Sponsor Organizations:

  Purdue University/Indiana Department of Transportation JHRP

  Purdue University
  1284 Civil Engineering Building, Room 4154
  West Lafayette, IN  United States  47907-1284
• Principal Investigators:

  Cho, Seonghwan

  Haddock, John

• Start Date: 20210908
• Expected Completion Date: 20250430
• Actual Completion Date: 0

Subject/Index Terms

• TRT Terms: Backcalculation; Bituminous overlays; Deflection tests; Dynamic modulus of elasticity; Falling weight deflectometers; Pavement layers
• Subject Areas: Highways; Pavements;

Filing Info

• Accession Number: 01782720
• Record Type: Research project
• Source Agency: Indiana Department of Transportation
• Contract Numbers: SPR-4619
• Files: RIP, STATEDOT
• Created Date: Sep 23 2021 3:18PM