Optimization Design Research on the Mix Proportion of Persulphated Phosphogypsum-slag Cement Concrete
Persulphated phosphogypsum-slag cement (PPSC) is a kind of new unfired environmental protection cementing materials.It's mixed and ground with 40％ ～50％ phosphogypsum,40％ ～50％ ground granulated blast-furnace slag (GGBFS),2％ steel slag and 4％ portland cement clinker.In order to realize resourceful utilization of phosphogypsum,optimization design on the mix proportion of PPSC are studied.The mix proportion design method for C30 are systematically studied and a design optimization was carried out.According to the design regulations of mix proportion of ordinary concrete and the characteristics of PPSC,the C30 high flowing concrete is prepared,and the optimum water-cement ratio is obtained based on revised Bowromi formula.According to the mix proportion optimization design,the 28 d strength is up to 38.5 MPa.The results of research on the water-cement ratio of C30 concrete and the simple mix proportion method of high-performance concrete are adopted to determine the optimum water-cement ratio and sand ratio.
NETL
NSTL
万方数据
维普
