ABSTRACT
The objective was to model rutting of asphalt concrete pavement subjected to non-uniform traffic loading and ever-changing temperature cycles during its service life. Critical stress states within the pavement structural layers have been evaluated using ABAQUS finite element program. The analyses have shown that an increase the E-moduli of the binder twice has yielded 4.9% and 14.3% reduction in vertical stresses developed at the mid-depth of the binder and base layers, respectively. While increasing the same by forth fold has yielded as well 11.1% and 27.6% reduction in these layers. It has been obtained that thicker AC layers with a minimum of 2 × 103 GPa.s immediate viscous parameter (η1) at higher temperature would give promising long life to pavement structures. The structural geometry, traffic characteristics, wander effect and speed play major role on rutting. Optimum structural thickness and material parameter are vital to reduce the rate of rutting.
