2022 Volume 76 Issue 1 Pages 299-306
In this study, hardened ordinary concrete is subjected to concentrated CO2 gas under a pressure of 0.5MPa and 1.0MPa respectively, using a high-pressure injection chamber and evaluated for the carbonation depth. In addition, the mass change during the process of carbonation of concrete was measured continuously. As a result, the relationship between carbonation depth and the mass increase rate of the concrete specimens, it was found that the mass increases linearly with the progress of carbonation and an increase in the carbonation depth. From this research work, it can be concluded that the measurement of mass change rate is an effective method for the evaluation of the progress of carbonation depth.
