赤泥大掺量用于胶凝材料的研究  

Study on the High Use Ratio of Red Mud in Cementitious Material

作　　者：冯向鹏[1] 刘晓明[2] 孙恒虎[1] 白雪[2] 牛雪莲[2] 

机构地区：[1]清华大学材料科学与工程系,北京100084 [2]中国矿业大学资源与安全工程学院,北京100083

出　　处：《矿产综合利用》2007年第4期35-38,共4页Multipurpose Utilization of Mineral Resources

基　　金：863计划项目(2003AA332020);国家自然基金(50474002)共同资助

摘　　要：由于赤泥具有潜在的胶凝性能,因此可用作胶凝材料的掺和料。但由于赤泥掺量的增加会使材料性能直线下降,故一直未能实现大宗利用。本文利用XRD、SEM、IR等测试手段对赤泥物质构成进行了分析,解释了对赤泥进行热激发处理的机理。并在赤泥掺量50%的基础上,配合各种固体废弃物以及自配的调节剂,考察了胶凝材料的强度。结果表明,该胶凝材料可达到42.5#水泥强度性能的要求,从而有望实现赤泥的大宗利用。It is generally believed that red mud is one of the useful solid wastes in cementitious material because of its latent cementitious performance. However, the allowable ration of red mud in cement is very low and the strength of hardened cement paste has decreased deeply along with the increasing of red mud, thus, large amount of use of red mud has never been able to achievement. In this paper,by use of several testing methods,such as XRD,SEM, IR etc ,the authors explained the mechanism of thermal activation of red mud. Combined red mud（50mass percent） with several other solid wastes and regulator which is produced by self, the strength of cementitious material sand grout can achieve the standard of 42.5^# cement. Consequently, the realization of the massive utilization of red mud is feasible.

关 键 词：赤泥 活性 热活化 胶凝材料 

分 类 号：TG31[金属学及工艺—金属压力加工]