掺MgO膨胀剂水泥浆体不同养护制度下的变形特性  

The deformation properties of MgO expansion agent-mixed cement paste under different curing conditions

作　　者：闫战彪[1] 刘加平[1,2] 田倩[2] 张守治[2] 

机构地区：[1]南京工业大学,江苏南京210009 [2]江苏省建筑科学研究院,江苏南京210008

出　　处：《新型建筑材料》2010年第12期4-7,共4页New Building Materials

摘　　要：研究了掺MgO膨胀剂水泥浆体在不同养护制度下的变形特性。结果表明,随着养护湿度的降低,MgO膨胀剂对水泥浆体的收缩补偿效果逐渐下降;提高养护温度,MgO膨胀剂对水泥浆体的收缩补偿增大,膨胀稳定所需时间缩短。This paper is concerned with the deformation properties of MgO expansion agent-mixed cement paste under different curing conditions. Results showed that with reducing of curing humidity,the effect of compensation shrinkage of cement paste containing MgO expansion agent decreased gradually. While raising the curing temperature,the effect of compensation shrinkage of cement paste containing MgO expansion agent increased,and time needed to obtain stable expansion shortened obviously.

关 键 词：MGO膨胀剂 水养 自收缩 干燥收缩 

分 类 号：TU528.042.4[建筑科学—建筑技术科学]