石膏(SO_3)对大掺量粉煤灰水泥性能的影响研究  

The Study on the Influence of SO_3 on the Performance of High Added Quantity Fly Ash Cement

作　　者：陈冬梅[1] 张日华[1] 

机构地区：[1]洛阳理工学院科研处,洛阳471023

出　　处：《硅酸盐通报》2008年第4期881-884,887,共5页Bulletin of the Chinese Ceramic Society

基　　金：洛阳市重大科技攻关项目(020109)

摘　　要：粉煤灰作为水泥混合材料不仅可以降低水泥的生产成本,而且能够改善水泥的使用和施工性能,具有水化热低,干缩小等特点,因此在很多工程中被广泛应用;本研究开发一种掺量为50%粉煤灰、15%矿渣微粉的微膨胀水泥,应用于公路基层等领域,同时研究了石膏掺加量对这种水泥有关性能影响。结果表明:石膏掺加量对此水泥的物理性能、强度、微膨胀性都有影响。Fly ash, being widely used as mixed material of cement, and characterized as low hydration heat and expansion, cannot only reduce the cost of cement production but also improve the use and construction performance of cement. The slight expansion cement with 50% fly ash and 15% slag powder developed in this study has been applied for the high way base. Meanwhile,the influence of SO3 on the performance of this kind of cement has also been studied. The result shows ： the amount of SO3 added in this cement influences its physical performance, strength and slight expansion.

关 键 词：粉煤灰 强度 水化热 钙矾石 膨胀系数 

分 类 号：TQ172.12[化学工程—水泥工业] TV431[化学工程—硅酸盐工业]