Analysis of Asphalt Pavement Rut Based on Elastic-viscoplastic Theory

Abstract

The elastic-viscoplastic theory was applied to research the permanent deformation of asphalt mixture, and a creep model was adopted for its good agreement with actual result. ABAQUS, the finite element modeling technique, were employed to simulate and investigate rut of the asphalt pavements with flexible base, and then the results were validated according to the circular track test. It is indicated that, rut increases fast in the early stage, but slow in later stage; pavement rut consists chiefly of absolute rut, and lateral upheaval only accounts for