| Title |
A Study on the Change of Concrete Carbonation Depth Considering the Environmental Effect of the Carbon Dioxide Increase |
| Authors |
Park Dong-Cheon ; Song Hwa-Cheol |
| Keywords |
Carbon Dioxide Increase ; Prediction of Long-term Carbonation Depth ; Thickness of Concrete Cover ; Diffusion of Calcium Hydroxide ; Rate Coefficient of Reaction |
| Abstract |
To estimate the compatibility of concrete cover criterion, the change of carbonation depth was calculated by FEM model considering the effect of carbon dioxide increase of the earth which is from SRES(Special Report on Emission Scenario) published by ICCP. The period of carbonation calculation is from 2000 to 2100. The difference of carbonation depth between A1F1 scenario which is the severest among the SRES scenario and constant carbon dioxide concentration(369ppm) for 100 years is 0.0042m. The smaller difference than the result we expected is attributed to concrete pore decrement and the diffusion of calcium hydrate which is cement hydration product. The difference by water cement ratio is also small because of the increment of calcium hydrate according to the change of the amount of unit cement. |