硫铝酸钡钙矿物的早期水化  

EARLY HYDRATION OF BARIUM-CALCIUM SULFOALUMINATE MINERAL

作　　者：常钧[1] 黄世峰[1] 叶正茂[1] 王传平[1] 程新[1] 

机构地区：[1]济南大学材料科学与工程学院,济南250022

出　　处：《硅酸盐学报》2006年第7期842-845,共4页Journal of The Chinese Ceramic Society

基　　金：国家自然科学基金(50502017);"973"计划(2001CB610701)资助项目

摘　　要：利用水化热分析、环境扫描电镜和X射线衍射对2.75CaO·0.25BaO·3Al2O3·BaSO4(C2.75B1.25A3S)矿物的早期水化行为进行了研究。结果表明:C2.75B1.25A3S矿物水化放热速度迅速,早期水化反应剧烈。水化早期,水化产物均匀覆盖于熟料颗粒表面,至6h时,熟料颗粒周围形成大量的细针状水化产物晶体。水化至12h后,晶体逐渐长大,附着于熟料颗粒的四周并相互交织在一起,熟料颗粒表面的水化膜消失。C2.75B1.25A3S的早期水化过程在14h基本结束。The early hydration of the barium-calcium sulfoaluminate mineral 2.75CaO-0.25BaO-3A1203-BaSO4 （C2.75B1.25A3 S^- ） was studied by hydrated heat, environmental scanning electron microscope and X-ray diffraction. The analysis results indicate that the hydration is intensive and the exothermal rate of C2.75Bl.EsA3 S^- mineral is rapid in the early stage. The surface of clinker grain was covered by hydrated compounds in the early stage. After 6 h hydration, a great number of needlelike crystals of hydration products were formed and surrounded the clinker grains. After 12 h hydration, hydration product crystals grew gradually and the aqueous film on the grain surface of the clinker disappeared. On the whole, the early hydration of C2.75B1.25A3 S^- was finished within 14 h.

关 键 词：硫铝酸钡钙矿物 含钡硫铝酸盐水泥 水化热 

分 类 号：TQ174[化学工程—陶瓷工业]