Research on RPC Preparation Technology of Stone Powder by Multi-index Orthogonal Test
In order to promote the high value utilization of tuff stone powder and optimize the mix ratio and curing process of RPC prepared from tuff stone powder,with RPC mix ratio of water binder ratio 0.18 as matrix,based on the design theory of multi-index orthogonal experiment,with the 28d cube compressive strength and flexographic strength as evaluation indexes,the range analysis results of multi-index orthogonal test are evaluated by comprehensive balance method,and the optimization plan of preparation process is obtained,and the influence degree and variation rule of curing temperature(A),curing time(B),water-binder ratio(C)and other factors on the mechanical properties of RPC doped with stone powder are revealed.The results show that the preparation of RPC with tuff stone powder as part of fine aggregate has the effect of densification enhancement,high value utilization of tuff stone powder is realized,the preparation cost of RPC is reduced,and the ecological environment is improved.The water-binder ratio has the most significant effect on the compressive strength of the cube,and the curing time has the most significant impact on the bending strength.The optimization scheme of RPC preparation process of tuff stone powder is curing temperature 85℃,curing time 24h,and water-binder ratio 0.18.
reactive powder concretetuff stone powderpreparation technologyorthogonal testrange analysis
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