Magnesia Modification of Alkali-Activated Slag Fly Ash Cement  

作　　者：沈卫国 

机构地区：[1]Key Laboratory of Silicate Materials Science and Engineering of Ministry of Education, Wuhan University of Technology [2]School of Materials Science and Engineering, Wuhan University of Technology

出　　处：《Journal of Wuhan University of Technology(Materials Science)》2011年第1期121-125,共5页武汉理工大学学报（材料科学英文版）

基　　金：Funded by the National Basic Research Program of China(No.2009CB23201);the Open Foundation of National Key Laboratory of Green Building Materials (No.CBM-08-KF103)

摘　　要：A new type of magnesia modification alkali-activated cement was prepared, the strength, setting time, shrinkage ratio and cracking behavior, as well as the composition and structure of the hydration product were investigated. The results indicate that the setting time of this cement is similar to that of the ordinary commercial cements; its strength reaches the standard of 42.5 degree cement, its cracking resistance has been remarkably improved because of the micro-aggregate effect of fly ash and shrinkage compensating of magnesia.A new type of magnesia modification alkali-activated cement was prepared, the strength, setting time, shrinkage ratio and cracking behavior, as well as the composition and structure of the hydration product were investigated. The results indicate that the setting time of this cement is similar to that of the ordinary commercial cements; its strength reaches the standard of 42.5 degree cement, its cracking resistance has been remarkably improved because of the micro-aggregate effect of fly ash and shrinkage compensating of magnesia.

关 键 词：alkali-activated cement CRACK MAGNESIA volume stability HYDRATION 

分 类 号：TU528[建筑科学—建筑技术科学]