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At the beginning of 2009, the Indiana Department of Transportation (INDOT) adopted the MechanisticEmpirical Pavement Design Guide (MEPDG) method to study long-term pavement performance. The implementation of this new design approach led to difficulties for the pavement to pass the INDOT performance criteria: in particular, pavement roughness (International Roughness Index (IRI)) for hot-mixed asphalt (HMA) and faulting for jointed plain concrete pavement (JPCP) when A-6 or A-7-6 soils were considered as foundation soils. This study focuses on investigating the influence of the soil input parameters in the Enhanced Integrated Climatic Model (EICM) on the prediction of the soil resilient modulus (MR) in the MEPDG. A total of four sites located around the state of Indiana are used to propose/validate the observations and conclusions made in the research.

Verification of the Enhanced Integrated Climatic Module Soil Subgrade Input Parameters in the MEPDG