高钛矿渣对水泥基复合材料性能的影响  

Impact of high-titanium slag on performance of cement-based composites

作　　者：石妍[1] 杨华美[1] 王迎春[1] 杨华全[1] 李家正[1] 

机构地区：[1]长江水利委员会长江科学院,水利部水工程安全与病害防治工程技术研究中心,湖北武汉430010

出　　处：《新型建筑材料》2009年第9期1-4,共4页New Building Materials

基　　金：国家自然科学基金重点项目(50539010);948项目(200606);中央级公益型科研院所基金项目(YWF200814)

摘　　要：采用宏观、微观测试方法,研究了高钛矿渣作为矿物掺合料对水泥基材料性能的影响及其水化机理。结果表明,高钛矿渣属于CaO-Al2O3-SiO2-TiO2四元体系,活性较低;增加高钛矿渣的掺量,水泥净浆的标准稠度减小、凝结时间稍延长;掺入高钛矿渣的砂浆早期强度低、后期强度发展较快但仍不高;高钛矿渣与纯水泥的水化产物及生成量稍有差别,且水泥石孔隙增多、孔尺寸增大;高钛矿渣在高碱环境下能被激发,从而使后期强度增长。A macro and micro testing method is employed to study on the impact of high-titanium slag as additive on the peribrmance of cement-based composites, and to analyze its hydration mechanism. The results show that high-titanium slag belongs to quaternary system CaO-Al2O3--SiO2-TiO2 and its activity is quite low. When the content of high-titanium slag increases, standard consistency of cement paste will decrease, and the setting time will prolong a little. The early strength of mortar mixing with high- titanium slag is low, however, the development of the latter strength is rather fast but the strength is still not too high. There are slight differences on types and content of hydrated products between high-titanium slag and pure cement, but more pores and bigger size of holes for hardened cement paste. Under the circumstance of high-alkali, high-titanium slag can be excited to improve strength at latter stage.

关 键 词：高钛矿渣 水泥基复合材料 水泥胶砂强度 微观结构 水化产物 

分 类 号：TQ172.44[化学工程—水泥工业]