Civil Engineering & Construction: Faculty Publications

Prediction of the MEPDG asphalt concrete permanent deformation using closed form solution

Document Type

Article

Publication Date

11-1-2014

Publication Title

International Journal of Pavement Research and Technology

DOI

10.6135/ijprt.org.tw/2014.7(6).397

Abstract

This research work focused upon the integration of the Mechanistic-Empirical Pavement Design Guide (MEPDG) methodology with the simple performance test to develop a rutting Closed Form Solution (CFS) for Asphalt Concrete (AC) layers to predict permanent deformation based on the Hot Mix Asphalt (HMA) dynamic modulus. The CFS would take only a few seconds to predict AC rutting instead of the significant MEPDG runtime. The rutting CFS can then be implemented in a probabilistic performance related specifications methodology for the Quality Assurance (QA) of HMA Construction. The main approach used to establish a rapid CFS for the AC MEPDG rutting distress module was to run the MEPDG for a large number of simulations using various combinations of inputs; and to develop an accurate CFS for the rutting distress prediction based on the dynamic modulus of HMA. To accomplishthis work, two major studies have been completed: (a) development of a rutting database based for different structures, climatic locations, traffic and vehicle speed; and (b) development of an AC effective dynamic modulus model and its relationship with the rutting. The developed methodology accurately predicts the rutting distress in the HMA layer close to that from the MEPDG.

Comments

Georgia Southern University faculty member, Myung Goo Jeong co-authored, "Prediction of the MEPDG asphalt concrete permanent deformation using closed form solution."

Copyright

Copyright @ Chinese Society of Pavement Engineering

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