DRYING SHRINKAGE OF EXPANSIVE CEMENTS

被引：9

作者：

COHEN, MD

MOBASHER, B

机构：

[1] Purdue Univ, West Lafayette, IN, USA, Purdue Univ, West Lafayette, IN, USA

来源：

JOURNAL OF MATERIALS SCIENCE | 1988年 / 23卷 / 06期

关键词：

CONCRETE - Expansion - MATERIALS TESTING;

D O I：

10.1007/BF01115759

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Drying shrinkage behaviour of expansive cement pastes were studied and compared with those of portland cements. Results indicate that the shrinkage behaviour of these two cements is significantly different from each other. Generally, expansive cements shrink more than portland cements, and especially more so if they have not been adequately cured, i. e. curing period of at least 7 days is necessary to ensure good performance against shrinkage. Internal damage caused by large amounts of expansion leads to a large magnitude of shrinkage. In that event curing does not seem to have any beneficial impact on shrinkage performance. Steel reinforcement also seems to decrease shrinkage magnitude, but it has no effect on the shrinkage characteristic.

引用

页码：1976 / 1980

页数：5