Consequences of carbonation on microstructure and drying shrinkage of a mortar with cellulose ether

被引：53
|
作者：
Metalssi, Othman Omikrine [1 ]
Ait-Mokhtar, Abdelkarim [2 ]
Turcry, Philippe [2 ]
Ruot, Bertrand [3 ]
机构：
[1] IFSTTAR, F-75732 Paris 15, France
[2] Univ La Rochelle, LaSIE, F-17042 La Rochelle 1, France
[3] CSTB, F-77447 Marne La Vallee 2, France
来源：
CONSTRUCTION AND BUILDING MATERIALS | 2012年 / 34卷
关键词：
Cement mortar; Cellulose ether; Carbonation; Microstructure; Shrinkage; Cracking; IMPEDANCE SPECTROSCOPY; CONCRETE;
D O I：
10.1016/j.conbuildmat.2012.02.044
中图分类号：
TU [建筑科学];
学科分类号：
0813 ;
摘要：
This paper presents the consequences of the carbonation phenomenon in the case of a mortar with Cellulose ether as admixture on its mechanical properties, microstructure and length variations. Carbonation was found to improve mechanical strengths and decrease the global porosity with modifying the pore size distribution. The latter is beneficial regarding durability. However, carbonation also led to an increase of shrinkage, and thus to a probable increase of cracking. Carbonation and shrinkage kinetics could be slowed down by sheltering the material from carbonation during hardening. (C) 2012 Elsevier Ltd. All rights reserved.
引用
收藏
页码：218 / 225
页数：8
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