Research on the Fatigue Damage of the Asphalt Pavement

Abstract:

Abstract: Fatigue cracking is a main form of structural damage of asphalt pavements. In general, there are four approaches to characterize the fatigue behavior of asphalt concrete. The methods including Phenomenological Approach, damage–energy fatigue approach, fatigue fracture mechanics and fatigue damage mechanics. Based on continuum damage mechanics, fatigue cycles of structural members in test can be greatly reduced and a unified approach of predicting fatigue crack initiation and fatigue crack propagation can be constructed. Generally, one damage variable is defined to account for the relative decrease of Young’s modulus with loading and, therefore, the change of Poisson ratio can not be considered. To accurately describe the coupling relationship between damage and stress fields, a bi-variable damage model to describe the variations of shear modulus and bulk modulus is the direction of future research.

• Periodical: Applied Mechanics and Materials (Volumes 256-259)
• Pages: 1776-1779
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.256-259.1776
• Online since: December 2012
• Authors: Zhe Fu Yu
• Keywords: Asphalt Pavement, Damage-Energy Approach, Fatigue Damage Model, Fatigue Fracture Mechanics

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DOI: 10.1007/s10409-011-0447-1