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http://dx.doi.org/10.11112/jksmi.2010.14.1.141

Prediction of Carbonation Progress Using Diffusion Coefficient of $CO_2$ in the Atmosphere  

Kang, Suk-Pyo (우석대학교 건축.인테리어디자인학과)
Publication Information
Journal of the Korea institute for structural maintenance and inspection / v.14, no.1, 2010 , pp. 141-147 More about this Journal
Abstract
The rate of carbonation is usually low in the natural environment due to the low $CO_2$ concentration in the atmosphere. Therefore, investigation of carbonation is usually conducted under accelerated testing conditions so as to speed up the process. This study is to predict carbonation progress by mathematical model, based on the diffusions of $CO_2$ and its reaction with $Ca(OH)_2$ in carbonation progressing region, in the atmosphere. To predict of carbonation progress in the atmosphere, we adopted a diffusion coefficient of $CO_2$ that agreed well the experimental value obtained by the accelerated carbonation test. Consequently the model can predict the rate of carbonation of concrete exposed in the atmosphere regardless of finishing materials.
Keywords
Prediction of carbonation progress; Mathematical model; Diffusion of $CO_2$; Calcium hydroxide; Atmosphere;
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