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Damage Degradation of Concrete due to Compressive Fatigue Loading

Abstract. An anisotropic damage model for concrete subjected to compressive fatigue loading is developed based on continuum damage mechanics with the concept of bounding surface. The damage and stress-strain relationships for concrete between monotonic and fatigue loading are obtained by means of the assumption of uniqueness deformation. The related parameters of the model are regressed by the test results of monotonic, single stage fatigue and the combination of multi-stage fatigue and monotonic of the paper. The comparison indicates a good agreement between the theory and the experiment results.