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.
Original language | English |
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Pages (from-to) | 397-404 |
Number of pages | 8 |
Journal | International Journal of Pavement Research and Technology |
Volume | 7 |
Issue number | 6 |
DOIs | |
State | Published - Nov 1 2014 |
Keywords
- Asphalt pavement
- Closed form solution
- Hot mix asphalt
- Permanent deformation
- Quality assurance