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Publication Details

Backcalculation of Layer Moduli of LTPP General Pavement Study (GPS) Sites

Research/Reference: useful for researchers doing further work in the pavement area as well as those developing improved testing and design procedures. Includes documents of historical value.

Primary Topic: Flexible Pavement

Description: This report details the activities and process by which the re-backcalculation of LTPP General Pavement Study (GPS) test sections were completed. These activities were completed under FHWA Contract DTFH61-95-C-00029 as part of Task B - "Backcalculate Resilient Modulus". This report details how the backcalculation program was selected, lists the GPS sections re-backcalculated, presents the results of the revised backcalculations and discusses the problem sections that were encountered. The report is also accompanied by a data base that contains results from the original SHRP backcalculation process and those sections that were re-backcalculated.

FHWA Publication Number: FHWA-RD-97-086

Publication Year: 1997

Document Links: HTML  PDF (file size: 3 mb)

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Updated: 02/20/2015

United States Department of Transportation - Federal Highway Administration