碱矿渣水泥的热激发研究  

Thermal Excitation Study of Alkali Slag Cement

作　　者：闫文涛[1] 郑雯 

机构地区：[1]同济大学材料学院,上海200092 [2]同济建设工程质量检测站,上海200092

出　　处：《水泥技术》2008年第1期27-30,共4页Cement Technology

摘　　要：研究了在热激发条件下,碱组分中的水玻璃掺量对碱矿渣水泥性能的影响及其规律。结果表明:通过蒸养手段实现了"热激发"的两个主要作用:(1)水玻璃的加入量在8.89%～18.45%范围内时,各配比激发时限可缩短为常温下十分之一左右;(2)水玻璃的掺量维持在≥12%～13%时,硬化体的强度变化不大,12h抗压强度可达到50MPa以上。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相同,主要为C-S-H凝胶,但结晶度变差。The paper presents the effect of sodium silicate amount on the property of alkali slag cement （ASC） under the condition of thermal excitation. The results shows that two important effects of ＂thermal excitation＂ were developed by means of steam curing： （1） when sodium silicate adding amount in the range of 8.89%-18.45%, the time limit of excitation would be shorten to 1/10 of normal curing; （2） when sodium silicate content keeps at 〉12%-13%, the strength of ASC keeps unchanged and 12h compression strength is over 50Mpa. XRD and SEM analysis shows that the hydration products in alkali slag paste is as same as under normal temperature when having steam curing, which is mainly composing C-S-H, but the crystallinity is low.

关 键 词：碱激发矿渣水泥 水玻璃掺量 激发时限 强度 水化产物 

分 类 号：TQ172.44[化学工程—水泥工业]