期刊
MATERIALS
卷 7, 期 1, 页码 218-231出版社
MDPI
DOI: 10.3390/ma7010218
关键词
electrochemical impedance spectroscopy; mortar; electrochemical model; parameter; carbonation depth; prediction
类别
资金
- National Key Basic Research Program - MOST [2011CB013600, 2011CB013604]
- National Natural Science Foundation of China [51120185002/51272160]
- Foundation for technology innovation project in Higher Education of Guangdong, China [2012KJCX0091]
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.
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