Abstract: The influences of each component dosage on the fluidity and compressive strength of reactive powder concrete (RPC) are researched. And the effect of curing modes on strength of RPC is also investigated. Results indicate that when water-binder ratio is 0.21 and cement: silica fume: fly ash: quartz sand: quartz powder=0.7: 0.35: 0.3: 0.78: 0.27, the fluidity and strength of RPC will be better. And the compressive strength of the specimens subjected to a 90℃ steam curing is a little higher than those cured in hot water at 90℃. Compared to the specimens cured in hot water at 90℃, the compressive strength of specimens subjected to a 90℃ steam curing increases 2.2% after 3 days curing.