硫铝酸盐水泥基胶凝材料的改性研究  

Study on modification of sulphoaluminate cement based materials

作　　者：马保国[1] 韩磊[1] 李海南[1] 谭洪波[1] 王允栋[1] 

机构地区：[1]武汉理工大学硅酸盐建筑材料国家重点试验室,武汉430070

出　　处：《功能材料》2015年第5期5062-5066,共5页Journal of Functional Materials

基　　金：国家自然科学基金资助项目(51178363);国家科技支撑计划资助项目(2011BAJ04B02)

摘　　要：根据结晶诱导、超细粉体、化学激发等效应,通过抗压强度测试、XRD、热重、SEM等分析手段对大掺量粉煤灰的硫铝酸盐水泥进行了研究。实验结果表明,引入增强组分M后,试块2h、3,7,28d最高抗压强度分别提高了140%,116%,80%和60%;钙矾石及铝胶生成量增多,体系变的更致密,2h就能达很高强度;M的引入,可能使钙矾石初始结晶度变差;随养护龄期的延长,钙矾石结晶度逐渐变好,M促使粉煤灰参与后续水化反应,使粉煤灰颗粒被水化物紧密包裹,体系变得更致密,试块后期强度变大。The composite cement of flyash and sulphatealuminium cement was studied by compressive strength XRD TG and SEM on the basis of induced crystallization effect particle effect and priming effect,etc.The results show that,after adding M,the compressive strength of 2h,3,7and 28 dhave improved 140%,116%,80%and 60%respectively;more AFt and alumina gel are produced in early age and samples become more compactness;early phase crystalline forms of AFt may get poor;with the prolong of hydration time,crystalline forms of AFt improves,flyash participates in the send hydration reaction and is tightly binded by its hydration products,the system gets more compactness,so the long-term strength increases.

关 键 词：硫铝酸盐水泥 粉煤灰 改性 抗压强度 

分 类 号：TU528.0[建筑科学—建筑技术科学]