热活化黄土胶凝性能研究  

Study on Cementitious Properties of Thermal Activated Loess

作　　者：万建华[1] 孙恒虎[2] 冯向鹏[2] 孙文标[1] 牛雪莲[1] 王岩[1] 

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

出　　处：《稀有金属材料与工程》2007年第A02期577-579,共3页Rare Metal Materials and Engineering

摘　　要：借助TG、DTA、XRD等手段研究了黄土在100℃～1000℃的物相组成和热分解特征,采用凝石技术制备了以黄土为主要原料的胶凝材料,测定其力学性能并研究了赤泥掺量对其胶凝材料的力学性能影响。研究结果表明,黄土在600℃煅烧胶凝性能良好;黄土掺量达到40%时,可获得28 d抗压强度超过42.5 MPa的胶凝材料。而且赤泥的掺入对胶凝材料的早期强度有良好的改善作用。The phase composition and thermal dissociation characteristics of the loess in the range from 100 ℃ to 1000 ℃ were investigated by TG, DTA and XRD method. Cementitious material with loess as main raw material was prepared by Sialite technology and its physical and mechanical properties were tested. The content of red mud affects physical and mechanical properties of the cementitious material. The results show the cementitious properties are excellent at 600 ＊C. The compression strength exceeds 42.5 MPa when the percentage composition ofloess is 40%. In addition, red mud improves the early strength of cementitious material.

关 键 词：黄土 赤泥 热活化 胶凝性能 凝石技术 

分 类 号：TB302[一般工业技术—材料科学与工程]