United States Department of Transportation
i
Investigation of the inputs for the MEPDG for rigid pavements.
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2013-03-01
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[PDF-7.58 MB]
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Abstract:There are great advantages in the design of infrastructure if design procedures are used that are based
on mechanisms and variables that determine the performance of the element in service. The American
Association of State Highway and Transportation Officials (AASHTO) have recently published a new
mechanistic and empirical pavement design guide (MEPDG) for flexible and rigid pavements which
aims to accomplish this. This design guide is implemented through the use of computer software that
provides an analysis of the performance of a given concrete pavement over time. The Oklahoma
Department of Transportation (ODOT) is investigating the implementation of the MEPDG and has
sponsored a research project at Oklahoma State University to help determine the recommended input
parameters for concrete pavements in the state.
This reports completes a sensitivity analysis of the MEPDG based on Oklahoma pavements, provides a
literature review of base material best practices, increases the Oklahoma weather data available for the
MEPDG, investigates the impact of curing on curling from drying shrinkage and from temperature
differentials in concrete pavements, provides regional input guidance for strength, coefficient of
thermal expansion, and shrinkage for Oklahoma concrete mixtures.
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