养护制度对特种水泥砂浆性能影响研究  

Influence Research of Curing System on Performance of Special Cement Mortar

作　　者：宋福 兰英静[2] 孙成晓[2] 高萌[2] 

机构地区：[1]神华新准铁路公司,鄂尔多斯017000 [2]内蒙古科技大学,包头014010

出　　处：《建材世界》2013年第1期15-17,共3页The World of Building Materials

摘　　要：论文主要研究了养护制度对特种水泥砂浆性能的影响。研究表明:烘养时间增加,水泥砂浆强度迅速增长,6h后强度增长减缓,在总养护时间相同时,烘养时间增加砂浆抗折强度下降;砂浆自然养护的收缩率是先标养后自然养护的2倍;先烘养后标养的试件膨胀率小,后期收缩率大;表面密封养护可以明显减少水泥砂浆的收缩率。This article studies the impact of curing system on the performance of special cement mortar. The results show that with the increase of baking raising time the strength of cement mortar grows rapidly, and the growth of strength slow down after 6 hours. With the increase of baking raising time the flexural strength of cement mortar de- creases when the total curing time is same. The shrinkage of cement mortar with natural curing is as twice as the ce- ment with standard and natural curing. The expansion rate of the cement with baking and standard curing is small, and its late shrinkage is big. The shrinkage of cement mortar with surface sealing curing reduces significantly.

关 键 词：烘养时间 收缩 养护 

分 类 号：TU528[建筑科学—建筑技术科学]