Design Implications for Concrete Pavements from LTPP Analysesby Emmanuel Owusu-Antwi, ERES Consultants Inc, Savoy, United States,
Michael I. Darter, ERES Consultants Inc, Savoy, United States,
Riaz Ahmad, ERES Consultants Inc, Savoy, United States,
Abstract: Among the original objectives of the Long-Term Pavement Performance (LTPP) study of the Strategic Highway Research Program (SHRP) were the evaluation of existing design methods for pavements, and the development of improved design methods that would increase pavement life. The data collected from the over 2,000 inservice pavement sections in the LTPP study presents a unique opportunity to conduct such evaluations of current design methods. Based on the results from these evaluations, the design methods for new and reconstructed pavements can be improved to directly impact the performance of pavements. This paper presents the results of an initial evaluation of the American Association of State Highway and Transportation Officials (AASTHO) rigid pavement design equation, using data collected from some of the concrete pavement sections in the LTPP study. The implications of the initial results obtained on the design of concrete pavements are presented.
Subject Headings: Pavement design | Concrete pavements | Data collection | Data processing | Highways and roads | Transportation studies
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