膨胀剂对硅酸盐水泥性能的影响  

The effects of expanders on cement properties

作　　者：李相国[1] 杨海涛[1] 姬志屏 尹俊波 房锐 王新红 李智勇 

机构地区：[1]武汉理工大学硅酸盐建筑材料国家重点实验室,湖北武汉430070 [2]元绿二级公路建设指挥部,云南元阳662400 [3]云南省交通规划设计研究院,云南昆明650000

出　　处：《中国包装科技博览（混凝土技术）》2013年第2期48-51,共4页China Science and Technology Review

摘　　要：采用强度与收缩实验研究了膨胀剂对水泥性能的影响。表明：膨胀剂可起到一定的后期强度增强作用，使抗压强度接近空白样；湿养护条件下，膨胀剂对收缩起到部分补偿作用，但不能补偿水泥浆体的所有收缩；水中养护时，水泥浆体早期膨胀明显，后期膨胀量小，70天左右时基本稳定。The effects of expanders on the performance of cement were explored by strength and contraction experiments. Results showed that expanders can enhance the late strength of cement paste, the compressive strength close to the blank sample; Expanders can partly compensate cement shrinkage under wet curing conditions, but can not compensate all the shrinkages; Cement paste had obvious early expansion but not obvious late expansion which disappeared at 70 days under water curing condition.

关 键 词：膨胀剂 强度 收缩 钙矾石 

分 类 号：TU525[建筑科学—建筑技术科学]