磷渣超细粉（比表面积＞６０００ｃｍ２／ｇ）是一种玻璃质粉体，与矿渣类似，取代砼中部分水泥，可以提高砼的流动性、强度与耐久性。单方砼中磷渣超细粉２７５ｋｇ、５２５＃硅酸盐水泥２７５ｋｇ、水胶比０．２６、高效减水剂９．７ｋｇ，砼坍落度２４ｃｍ，２８天强度１０１ＭＰａ，Ｃｌ－扩散系数比基准砼降低了１／３左右。 Phosphorus slag ultrafine powder (specific surface area > 6000cm2/g) is a kind of vitreous powder, similar to slag. Substituting some cement in concrete can improve the mobility, strength and durability of concrete. Single-side calcium phosphate slag superfine powder 275kg, 525# portland cement 275kg, water-binder ratio 0.26, superplasticizer 9.7kg, slump 24cm, 28-day strength 101MPa, Cl-diffusion coefficient ratio砼 is reduced by about 1/3.