ABSTRACT
The objective was to model rutting of long life asphalt concrete pavement subjected to non-uniform traffic loading and ever-changing temperature cycles during its service life. Critical stress states within the pavement had been evaluated using ABAUQS finite element program based on long life asphalt concrete concept. A Burger-based rut prediction model had been developed and programmed by taking into account the prevailing traffic loading spectrum and the fluctuation of the temperature likely to happen across the depth of pavement. The finite element analyses showed that critical vertical and shear stresses are developed within the surface and binder layer, respectively. An increase the E-moduli of the binder yielded reduction in vertical stresses at the mid-depth of the binder and base layers. The rut prediction model indicated that the rate of rutting had been influenced by the viscous parameter and temperature of the asphaltic layers, wander effect and speed of the vehicles.
