Piezoelectric effect of hardened cement paste

被引:47
|
作者
Sun, MQ [1 ]
Li, ZQ [1 ]
Song, XH [1 ]
机构
[1] Wuhan Univ Technol, Dept Engn Struct & Mech, Wuhan 430070, Hubei, Peoples R China
来源
CEMENT & CONCRETE COMPOSITES | 2004年 / 26卷 / 06期
基金
中国国家自然科学基金;
关键词
hardened cement paste; piezoelectric effect; electrokinetic phenomenon;
D O I
10.1016/S0958-9465(03)00104-5
中图分类号
TU [建筑科学];
学科分类号
0813 ;
摘要
The piezoelectric effect of hardened cement paste was studied in this paper. As compressive stress was applied on the specimen, an electrical current was observed. The electrical current increases nonlinearly with compressive stress. The average sensitivity constant reached is 1.0 x 10(-8) A/MPa. Through investigation of the variation of piezoelectric effect with absorbed water content in specimens, the mechanism of this phenomenon was analyzed. Piezoelectric effect of hardened cement paste is related to the transportation of mobile ions along with water in the hydrated cement product under stress. (C) 2003 Elsevier Ltd. All rights reserved.
引用
收藏
页码:717 / 720
页数:4
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