Influence of water-to-cement ratio and curing period on pore structure of cement mortar

被引：250

作者：

Chen, Xudong ^{[1
]}

Wu, Shenxin ^{[1
]}

机构：

[1] Hohai Univ, Coll Civil & Transportat Engn, Nanjing, Jiangsu, Peoples R China

来源：

CONSTRUCTION AND BUILDING MATERIALS | 2013年 / 38卷

基金：

中国国家自然科学基金;

关键词：

Cement mortar; Pore structure; Water-to-cement ratio; Curing time; MERCURY INTRUSION POROSIMETRY; PORTLAND-CEMENT; SIZE DISTRIBUTION; MICROSTRUCTURAL DEVELOPMENT; COMPRESSIVE STRENGTH; NUMERICAL-SIMULATION; IMAGE-ANALYSIS; FLY-ASH; CONCRETE; PASTE;

D O I：

10.1016/j.conbuildmat.2012.09.058

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

The effect of water-to-cement ratio (w/c) and age on the pore structure of cement mortar was determined through mercury intrusion porosimetry (MIP). The cement mortar specimens were prepared with w/c of 0.4, 0.5 and 0.6, and were tested at different curing ages (14, 28, 180 days). The degree of hydration of the cement in cement mortar was obtained by determining the non-evaporable water content. Test results have shown that, the degree of hydration increased with increasing curing time and water-to-cement ratio of the cement mortar for the ages of cement mortar varying between 14 and 180 days. An increase in the water-to-cement ratio increases the total porosity. In addition, the existing models of pore size distribution of cement-based materials has been reviewed and compared with test results in this investigation. (C) 2012 Elsevier Ltd. All rights reserved.

引用

页码：804 / 812

页数：9

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