ANALYSIS OF THE FLEXURAL FATIGUE PROPERTY OF REACTIVE POWDER CONCRETE

Based on the reactive powder concrete specimens static load and flexural fatigue test，the ultimate bearing capacity and flexural strength and fatigue life of the specimens could be obtained． The specimens failure mode and fracture process of evolution were analysed． The development of fatigue deformation of RPC specimens was divided into three stages． Compared to the normal concrete，the fatigue life of the fatigue deformation was increased by about 5% in the first stage． Based on the Weibull distribution test of RPC specimens fatigue life，the p － S － N curve equation taking account of failure probability was proposed． By the curve equation，the RPC's fatigue ultimate strength could take 58. 8% of its compressive strength．