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为了探讨高温养护时钢渣复合胶凝材料的早期水化性能,采用了化学结合水的测定、浆体显微观察、X射线衍射分析和孔隙分析等手段进行了研究。结果表明:高温养护能明显缩短复合胶凝材料的水化诱导期,加快其早期反应速率;能够同时促进水泥和钢渣的水化,提高钢渣复合胶凝材料的水化程度。高温养护能改善复合胶凝材料浆体在水化早期形成的孔结构,降低孔隙率,减小粗孔比例;但对水化产物种类的影响很小。
In order to investigate the early hydration performance of steel slag composite cementitious materials during high temperature curing, chemical bonding water determination, slurry microscopic observation, X-ray diffraction analysis and pore analysis were used to study. The results showed that the high temperature curing could significantly shorten the hydration induction period and accelerate the early reaction rate of the composite cementitious materials. It can also promote the hydration of cement and steel slag and improve the hydration degree of the steel slag composite cementitious material. The high temperature curing can improve the pore structure formed in the early hydration of composite cementitious slurry, reduce the porosity and reduce the proportion of coarse pores, but have little effect on the hydration product.