不同无机早强剂对钢渣胶凝材料早期强度的影响

Effect of Different Inorganic Accelerarors on Early Strength of Steel Slag Cementitious Materials

研究了不同无机早强剂对新余钢铁公司热泼钢渣早期强度的影响。结果表明:硫酸盐激发剂、碱激发剂均能提高钢渣胶凝材料的早期强度;复掺激发剂比单掺激发剂效果更好;碱激发和硫酸盐激发共同作用时,比单独的碱激发或硫酸盐激发更能提高钢渣胶凝材料的早期强度。效果最好的是CaSO4.1/2H2O和NaOH以1%∶0.4%的比例复掺,使钢渣胶凝材料的3d抗压强度比不掺早强剂时提高54.5%,7d强度提高15.2%。

Effects of different inorganic accelerators on early strength of steel slag cementitious materials are studied.The results showed that both sulfate-activators and alkali-activators can improve the early strength of steel slag cementitious materials;accelerating effect of compound agents on early strength of steel slag cementitious materials are better than single agent;combination of alkali-activating and sulfate-activating has better effect on steel slag cementitious materials than alkali-activating or sulfate-activating.The optimum combination of alkali-activator and sulfate-activator is CaSO4·1/2H2O and NaOH combinated in the proportion of 1%∶0.4%,3d compressive strength is increased by 54.5%,7d compressive strength is increased by 15.2%.