PROGRESS AND PITFALLS FOR A DOT-DEVELOPED MECHANISTIC DESIGN PROCEDURE
Last year, North Carolina Department of Transportation reported on efforts to develop a mechanistic-empirical design procedure (Corley-Lay 1996). That initial effort was based on falling weight deflectometer (FWD) testing and pavement condition evaluations at 24 test sections taken over a three year period. Since the initial effort, additional work has been done to improve the procedure and to test whether the method selected to estimate the pavement response under loading is giving reasonable results. This paper describes the comparison of strain calculations from the earlier effort with several other methods. In addition, work has been done on implementation of Miner's hypothesis to consider seasonal variations. Finally, some comments on the types and amounts of data required to develop a calibrated mechanistic-empirical pavement design procedure are provided to assist other agencies as they plan to implement mechanistic design. This result is particularly important in light of the current efforts by the American Association of State Highway and Transportation Officials to produce a mechanistic empirical design procedure for implementation in 2002.
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Supplemental Notes:
- This conference was arranged by the International Society for Asphalt Pavements. The ninth conference will be held in Copenhagen, Denmark in August 2002.
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Corporate Authors:
University of Washington, Seattle
Department of Civil and Environmental Engineering, P.O. Box 352700
Seattle, WA United States 98195-2700 -
Authors:
- Corley-Lay, J B
- Qian, Y
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Conference:
- Eighth International Conference on Asphalt Pavements
- Location: Seattle, Washington
- Date: 1997-8-10 to 1997-8-14
- Publication Date: 1997
Language
- English
Media Info
- Features: Figures; References; Tables;
- Pagination: p. 93-103
Subject/Index Terms
- TRT Terms: Asphalt concrete pavements; Design methods; Mechanical strain; Mechanistic design; Pavement design
- Uncontrolled Terms: Seasonal variations
- Geographic Terms: North Carolina
- Subject Areas: Design; Highways; Pavements; I22: Design of Pavements, Railways and Guideways; I23: Properties of Road Surfaces;
Filing Info
- Accession Number: 00764652
- Record Type: Publication
- Report/Paper Numbers: Volume I
- Files: TRIS
- Created Date: Jun 8 1999 12:00AM