Literature review of reactive powder concrete

This paper introduces the proportioning principles and technology of reactive powder concrete (RPC), and then summarizes RPC durability and high temperature resistance. It is found that in the calculation of bond-anchorage length, the appearance coefficient of steel bar is higher in RPC than in ordinary concrete. The flexural cracking strain of RPC beam is 705×10^-6-864×10^-6, higher than that of ordinary concrete beam, which is 80×10^-6-120×10^-6. The normal section limit compressive strain of RPC beam is 4 100×10^-6-5500×10^-6, higher than that of ordinary concrete beam, which is 3300×10^-6. The plastic influence coefficient for sectional resisting moment of RPC beam increases with the longitudinal reinforcement ratio; the test value of inclined section shearing load-bearing capacity is lower than the calculated value due to lack of coarse aggregate interlock effect on both sides of inclined cracks in RPC beam. Compared with ordinary concrete, RPC possesses excellent performance of chloride ion permeability resistance, carbonation resistance, frost thawing resistance and sulfate resistance; RPC mixed with fiber appropriately can prevent thermal spalling effectively. Finally, this paper briefly introduces the pilot projects of RPC and manifested its broad application prospects.