Study on the Carbonation Behavior of Cement Mortar by Electrochemical Impedance Spectroscopy

被引：68
|
作者：
Dong, Biqin [1 ]
Qiu, Qiwen [1 ]
Xiang, Jiaqi [1 ]
Huang, Canjie [1 ]
Xing, Feng [1 ]
Han, Ningxu [1 ]
机构：
[1] Shenzhen Univ, Sch Civil Engn, Guangdong Prov Key Lab Durabil Marine Civil Engn, Key Lab Durabil Civil Engn Shenzhen, Shenzhen 518060, Guangdong, Peoples R China
来源：
MATERIALS | 2014年 / 7卷 / 01期
基金：
中国国家自然科学基金;
关键词：
electrochemical impedance spectroscopy; mortar; electrochemical model; parameter; carbonation depth; prediction; MICROSTRUCTURAL CHARACTERIZATION; CORROSION BEHAVIOR; PORE STRUCTURE; HIGH-VOLUME; CONCRETE; MODEL; STEEL; PREDICTION; DIOXIDE;
D O I：
10.3390/ma7010218
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
A new electrochemical model has been carefully established to explain the carbonation behavior of cement mortar, and the model has been validated by the experimental results. In fact, it is shown by this study that the electrochemical impedance behavior of mortars varies in the process of carbonation. With the cement/sand ratio reduced, the carbonation rate reveals more remarkable. The carbonation process can be quantitatively accessed by a parameter, which can be obtained by means of the electrochemical impedance spectroscopy (EIS)-based electrochemical model. It has been found that the parameter is a function of carbonation depth and of carbonation time. Thereby, prediction of carbonation depth can be achieved.
引用
收藏
页码：218 / 231
页数：14
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