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In the present work, an attempt has been made to propose an analytical model to predict crack propagation in plain concrete member under the action of repetitive loading. The analytical formulation incorporates the influence of fracture process zone, which is considered to be evolved at the micro/meso-scale level together with other crack growth characterising parameters. These parameter includes the size dependent fracture energy, change in energy release rate, frequency, initial crack length, structural size. Generalised Barenblatt and Botvina dimensional analysis approach for fatigue crack growth problems has been adopted in conjunction with the theory of intermediate asymptotic. The scaling behaviour of various parameters has been explored for the fatigue crack propagation problem in plain concrete specimens. The proposed model has been calibrated and validated with the available experimental results from the literature

Effects of Fracture Process Zone on Fatigue Crack Growth in Concrete