Characterizing Existing Hot-Mix Asphalt Layer Damage for Mechanistic Pavement Rehabilitation Design

The increasing focus on existing hot-mix asphalt (HMA) pavement rehabilitation by State departments of transportation (DOTs) as HMA pavements are the predominant pavement type in the United States, State DOTs require local calibration of the Mechanistic-Empirical Pavement Design Guide (MEPDG) HMA overlay of existing HMA pavement methodology. Although this methodology is a great improvement on the 1993 American Association of State Highway and Transportation Officials (AASHTO) HMA overlay design procedure, it has significant shortcoming, such as: (1) The Level 1 procedure for characterizing existing HMA pavement structural capacity/condition based on falling weight deflectometer (FWD) deflection testing, coring, extraction of cores, and lab characterization of the HMA cores binder and volumetric properties has to date not been calibrated. (2) The Level 2 and 3 procedures, though calibrated, are based on pavement surface distress and condition rating making it at best highly subjective. The need to review, enhance as needed, and calibrate the MEPDG Levels 1, 2, 3 procedures for characterizing existing HMA pavement structural capacity/condition.  The purpose of this research is as follows: (1) Develop and calibrate objective methodologies for characterizing existing HMA pavement damage for HMA and portland cement concrete (PCC) overlay design that will, as a minimum, be enhancements to current MEPDG Level 1, 2, and 3 methodologies. (2) The new methodologies must be compatible with the Interim AASHTO MEPDG Level 1, 2, and 3 methodologies. (3) The new methodologies must be practical and implementable within the current AASHTO Interim MEPDG framework.

• Supplemental Notes:
  • Program Information: Surface Transportation Research, Long-Term Pavement Performance

Language

• English

Project

• Status: Active
• Funding: $249771
• Sponsor Organizations:

  Federal Highway Administration

  Turner-Fairbank Highway Research Center
  6300 Georgetown Pike
  McLean, VA  United States  22101
• Project Managers:

  Wiser, Larry

• Performing Organizations:

  Applied Research Associates, Incorporated

  115 West Main Street, Suite 400
  Urbana, IL  United States  61801
• Principal Investigators:

  Sadasivam, Suri

• Start Date: 20170721
• Expected Completion Date: 20160720
• Actual Completion Date: 0

Subject/Index Terms

• TRT Terms: Hot mix asphalt; Overlays (Pavements); Pavement design; Pavement distress; Portland cement concrete; Rehabilitation (Maintenance); State departments of transportation
• Identifier Terms: Mechanistic-Empirical Pavement Design Guide
• Geographic Terms: United States
• Subject Areas: Highways; Pavements;

Filing Info

• Accession Number: 01577151
• Record Type: Research project
• Source Agency: Department of Transportation
• Files: RIP, USDOT
• Created Date: Sep 28 2015 12:02PM