磷渣超细粉混凝土的流动性、抗压强度与耐久性研究(英文)

Fluidity,Compressive Strength and Durability of Concrete with Ultrafine Phosphorus Slag

磷渣超细粉的比表面积大于６０００ｃｍ２／ｇ，它和矿渣细粉一样都是玻璃态物质。通过对磷渣超细粉和矿渣细粉的比较研究发现，磷渣超细粉取代部分水泥后可以改善混凝土的流动性、强度和耐久性。按磷渣超细粉２７５ｋｇ／ｍ３、普通硅酸盐水泥２７５ｋｇ／ｍ３、水胶比０．２６、超塑比剂９．７ｋｇ／ｍ３配制的混凝土坍落度为２４０ｍｍ，２８ｄ抗压强度为１０１ＭＰａ，氯离子扩散系数较普通水泥混凝土降低１／３。

Ultrafine phosphorus slag(UFPS) with surface area greater than 6000cm2/g is a vitreous powder similar to granulated blastfurnace slag(GBFS)The comparative investigation of UFPS and GBFS in this paper showed that UFPS could improve the fluidity,strength and durability of concrete at partial replacement of cementWith 275kg/m3 compound UFPS,275kg/m3 Grade 525# ordinary Portland cement,026 waterbinder ratio,and 97kg/m3 superplasticizer,a concrete had been prepared with a slump of 240mm,28d compressive strength 101MPa,and diffusion coefficient of Cl about one third lower than that of the control Portland cement concrete