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U.S. Department of Transportation U.S. Department of Transportation Icon United States Department of Transportation United States Department of Transportation
OFFICE OF RESEARCH, DEVELOPMENT, AND TECHNOLOGY AT THE TURNER-FAIRBANK HIGHWAY RESEARCH CENTER

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

Project Information

Project ID:
FHWA-PROJ-14-0126
Project Abstract:

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.

Goals

Develop a new calibrated existing flexible (new hot-mix asphalt (HMA) and HMA overlaid HMA) pavement damage model for use in ME design. The new model will be based on objective deflection-based in situ measurement of pavement condition rather than current procedures that mainly consider only distress/condition at the pavement surface. By using a deflection-based model, the condition of the entire pavement structure prior to rehabilitation is assessed.

Research HUB ID:
8869
Project Status:
Completed
Project Funding Amount (Contract Award Amount):
$249,771.00
Start Date:
End Date:
Public Access Plan:
No
Grant/Contract ID:
  • DTFH6114C00024
FHWA Program Area:
  • Infrastructure
FHWA AMRP Program:
  • Long-Term Infrastructure Performance
FHWA Activity:
  • Long-Term Pavement Performance

Contact Information

First Name:
Larry
Middle Initial:
J
Last Name:
Wiser
Phone Number:
(202) 493-3079
Email Address:
Team:
Long-Term Infrastructure Performance Team
Office:
Office of Infrastructure Research and Development
Office Code:
HRDI-30

Management Organizations

Sponsor Organization

Organization Role:
Sponsor Organization
Organization:
Federal Highway Administration: Office of Research, Development, and Technology - Office of Infrastructure Research and Development
Contact Role:
Project Lead

Managing Organization

Organization Role:
Project Managing Organization
Organization:
Federal Highway Administration: Office of Research, Development, and Technology - Office of Infrastructure Research and Development
Contact Role:
Project Contact

Performing Organization

Organization Role:
Performing Organization
Organization:
Federal Highway Administration: Office of Research, Development, and Technology - Office of Infrastructure Research and Development
Contact Role:
Project Contact

Partners and Other Sponsor/Managing/Performing Organizations

Organization Role:
Partner: Advisory
Organization:
Federal Highway Administration: Office of Research, Development, and Technology - Office of Infrastructure Research and Development
Organization Role:
Partner: Advisory
Organization:
Federal Highway Administration: Office of Infrastructure - Office of Asset Management, Pavement, and Construction
Organization Role:
Partner: Technical
Organization:
Federal Highway Administration: Resource Center
Organization Role:
Partner: Technical
Organization:
TRB Expert Task Group