中文摘要：

利用X射线衍射分析、扫描电子显微镜、化学结合水量测定以及胶砂实验等方法研究了钢渣粉和钢渣水泥复合粉的活性和水化机理,研究结果表明：钢渣硬化浆体中的矿物组成含有水化产物C-S-H凝胶和Ca（OH）2,钢渣残余矿物C2F、Ca2（Fe,Al）2O5、CaCO3和RO相,和一些未反应的胶凝矿物C2S和C3S;钢渣、水泥和钢渣-水泥浆体三者的水化产物种类类似,微观结构形貌存在差异;14 d后掺钢渣水泥净浆试样的化学结合水量与水泥差距缩小,28 d后化学结合水量实测值大于计算值;钢渣掺量（质量分数）小于30%时,钢渣水泥胶砂的28 d强度高于水泥胶砂的28 d强度。

英文摘要：

The cementitious behavior and hydration mechanism of steel slag and steel slag-cement complex powders have been investigated by X-ray diffraction,scanning electron microscopy,determination of non-evaporable water content and activity index tests. The results show that the mineral composition of a hardened paste of steel slag includes some predominant hydration products（ C-S-H gel and Ca（ OH）2）,some residual minerals from the steel slag（ C2 F,Ca2（ Fe,Al）2O5,CaCO3 and RO phases）,and some unhydrated C2 S and C3 S. The hydration products of steel slag,cement and steel slag-cement are similar,while the microstructures are different. The non-evaporable water content of the steel slag cement-based complex binder paste approaches,or even exceeds,that of pure cement after 14 days,and the measured values are greater than the calculated value after aging for 28 days. The strength of steel slag-cement mortar is higher than that of cement mortar when the content of the steel slag is less than 30%.