矿渣-粉煤灰混合材料水化产物、微观结构和性能  

MICROSTRUCTURE AND PROPERTIES OF HYDRATION PRODUCTS OF SLAG-FLY ASH MIXED CEMENTITIOUS MATERIALS

作　　者：张景富[1] 丁虹[1] 代奎[1] 孙超[1] 

机构地区：[1]大庆石油学院提高油气采收率教育部重点实验室,黑龙江大庆163318

出　　处：《硅酸盐学报》2007年第5期633-637,共5页Journal of The Chinese Ceramic Society

基　　金：黑龙江省青年骨干教师创新能力资助项目

摘　　要：用X射线衍射仪和扫描电子显微镜等对矿渣、粉煤灰混合材料的水化产物、硬化体微观结构及强度进行了检测和分析,确定了水化产物的组成及微观结构特点,揭示了矿渣粉煤灰材料的水化作用特点及强度特征。结果表明:矿渣在激发剂作用下使玻璃体首先发生表面水解,产生水化反应,进而引发粉煤灰的火山灰作用;混合材料的水化产物组分以水化硅酸钙凝胶为主,硬化体具有与油井水泥相类似的网络状微观结构;随养护时间增长,混合材料后期强度持续增加。The hydration products, microstructure and strength of slag-fly ash mixed cementitious materials were measured and analyzed by X-ray diffraction and scanning electron microscopy. The composition and microstructure of the hydration products were determined, and the hydration and strength characteristics of slag-fly ash mixed cementitious materials were studied. The results indicate that under the action of an excitation agent, surface hydrolysis of slag takes place on the glass body first and the hydration reaction occurs. Then the pozzolanic reaction of fly ash takes place. The main compositions of hydration products for slag-fly ash mixed cementitious materials consist ofgelating hydrated calcium silicate. The net-shaped microstructure in the cementitious stone is similar to hardened oil well cement. With the increase of curing time, the strength of hardened cement increases continually in the later of the reaction period.

关 键 词：矿渣 粉煤灰 水化产物 微观结构 强度 

分 类 号：TQ172.44[化学工程—水泥工业] TE256[化学工程—硅酸盐工业]