碱矿渣水泥的激发性能与热激发工艺  

Performances and processes of thermal activation of alkali slag cement

作　　者：闫文涛[1] 张雄[1] 张永娟[1] 

机构地区：[1]同济大学材料学院,200092

出　　处：《新世纪水泥导报》2008年第4期21-24,共4页Cement guide for new epoch

基　　金：十一五国家科技支撑计划;编号:2006BAJ01B05

摘　　要：研究了碱矿渣水泥钠水玻璃复合激发剂中水玻璃掺量对碱矿渣水泥性能的影响,在降低水玻璃掺量的同时,通过蒸养手段,对碱矿渣水泥实施了"热激发"。结果表明:其硬化体12 h的强度已接近28 d强度,较之常温养护,硬化体碳化明显减少。通过不同蒸养制度的对比,得出"3+6+3;80℃"蒸养制度是适宜的热激发工艺;通过对常温养护与蒸养试样的XRD、SEM分析,表明蒸养后碱矿渣浆体中的水化物种类与常温下的相同,主要为C-S-H凝胶,但结晶度变差。The influence of dosing amount of sodium silicate used in the sodium composite activation agent on the mortar performance of ASC(alkali slag cement)is studied.By means of steam curing,'thermal activation'is applied to ASC with reduced sodium silicate dosage,and result shows that the 12h strength of ASC has been clesed to its 28d strength,and carbonization in hardened body is obviously diminished compared to natural curing.By analyzing different institutions of steam curing,the steam curing process of'3+6+3;80℃'would be the most suitable one for thermal activation.XRD and SEM analyzing result shows that main hydration products for both steam curing and natural curing are the same C-S-H cementitious materials, but the degree of crystallization by steam curing is a bit lower.

关 键 词：碱矿渣水泥 热激发工艺 蒸养制度 水化产物 

分 类 号：TQ172.71[化学工程—水泥工业] TQ172.12[化学工程—硅酸盐工业]