早强剂对钢渣胶凝材料早期强度的影响  

Effect of accelerators on the early strength of steel slag cementitious materials

作　　者：罗珣[1] 刘家祥[1] 王博[1] 朱桂林[2] 卢忠飞[2] 

机构地区：[1]北京化工大学资源有效利用国家重点试验室,北京100029 [2]中冶建筑研究总院有限公司,北京100088

出　　处：《北京化工大学学报（自然科学版）》2011年第1期83-86,共4页Journal of Beijing University of Chemical Technology(Natural Science Edition)

摘　　要：研究了若干早强剂对新余钢铁公司热闷钢渣早期强度的影响。结果表明:硫酸钠和半水硫酸钙对钢渣有一定激发作用,但28天强度下降明显,甲酸钙、三乙醇胺、醋酸钠和尿素对钢渣几乎没有激发效果,将它们两两复掺后仍然没有激发效果。将半水石膏/亚硝酸钠(1%/0.67%,质量分数,以下同)和尿素(0.22%)复掺后,使钢渣3天强度有一定提高,并且钢渣的28天强度下降幅度比掺半水石膏/亚硝酸钠(1%/0.67%)的钢渣强度要小11%。The effect of different accelerators on the early strength of steel slag cementitious materials has been studied. The results show that though inorganic accelerators can improve early strength of steel slag cementitious materials, 28d strength of the steel slag cementitious materials decreased. Calcium formate, triethanolamine, sodium acetate and urea had almost no effect on the early strength of steel slag cementitious materials, and combinations of these organic accelerators also had no effect. A combination of semi-hydrated gypsum/sodium nitrite （1%/ 0. 67% ） and urea （0.22%） afforded some increase in 3 d strength of steel slag cementitious materials, and 28 d strength of steel slag cementitious materials declined by less by 11%.

关 键 词：钢渣 早强剂 抗压强度 

分 类 号：TU528.042[建筑科学—建筑技术科学]