Migration of CO2, gas and diffusion of moisture are the most dominant factors for the carbonation of concrete. Although many previous studies reported about the influence of mix proportion and type of cement on carbonation of concrete, the carbonation speed is influenced also by curing condition and age of the specimens. Moreover, Some studies reported that the carbonation speed became slower and slower as the testing duration was longer.
In this paper, mortar specimens with various types of mix proportion were tested by an accelerated carbonation tests to study the influence of the Mix proportion. The test data was analyzed from the view point of the micro structure measured by mercury porosimeter.
