Abstract The effect of different configurations of normal contact stresses on the rutting performance of asphalt concrete overlays on a soft and stiff Crushed Aggregate Base (CAB) layer is investigated. A three-dimensional (3-D) finite element model of a pavement structure is generated. The effect of different types of simplified normal contact stresses and a realistic 3-D normal stress on the rutting performance is investigated. Since the failure mechanism of asphaltic materials at high temperature is mainly related to the flow of the material, the viscoelastic and viscoplastic constitutive relationships coupled with the hardening-relaxation mechanisms are utilized to represent the behavior of asphalt concrete layer. This constitutive relationship is part of the PANDA (Pavement Analysis using Nonlinear Damage Approach) model developed by the authors and their collaborators. As the result of simulation, the magnitude of the rut depth on the asphalt concrete layer is generally determined to be inversely proportional to the stiffness of the CAB layer, and the rut depth on the asphalt concrete layer under the realistic 3-D normal stress is about 1.5 times greater than the rut depth under uniformly distributed normal stress.
Effect of the Realistic Tire Contact Pressure on the Rutting Performance of Asphaltic Concrete Pavements
KSCE Journal of Civil Engineering ; 22 , 6 ; 2138-2146
2018-05-18
9 pages
Article (Journal)
Electronic Resource
English
Heavy Load, Low Tire Pressure Rutting of Unbound Granular Pavements
Online Contents | 1997
|Heavy Load, Low Tire Pressure Rutting of Unbound Granular Pavements
British Library Online Contents | 1997
|Improving the Performance of Heavy Duty Asphaltic Concrete Pavements
British Library Conference Proceedings | 1992
|Asphaltic pavements at ashokan
Engineering Index Backfile | 1919
|