To optimize the main components of reactive powder concrete (RPC) for various curing methods, based on the fluidity and\ncompressive strength, an inclusive experimental research is conducted on 58 different mixture ratios. The results indicate that\nowing to the increase of the cement strength, the RPC fluidity decreases and the cement strength is not proportional to the\ncompressive strength. The addition of the fly ash and the nano-microbead is an effective way to improve the fluidity, and it is\nrequired at the low W/B ratio. However, the influence of the SF grade on the strength and fluidity is almost negligible. By\nconsidering the fluidity, strength, and economy of RPC as crucial design factors, SF90 is suggested. The contribution of the steel\nfiber to the compressive strength cannot be ignored. The upper envelope value of the steel fibers is required for the structure to\nresist appropriately against the fire. According to the test results, the mixture ratio formula is proposed through considering the\ncharacters of different compositions and curing methods. The strength coefficient k1 is introduced to verify the influence of the\nsteel fiber content, and the parameters............
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