Abstract

Carbonation of lightweight aerated concrete (AAC) is a reaction in which Tobermorite, a major mineral, decomposes into calcium carbonate and silica gel, causing cracks in the AAC. It is important to understand the progress of carbonation in order to determine the maintenance and replacement time of AAC. In this study, Rietveld analysis was applied to AAC to quantify the major minerals including Tobermorite and to clarify the changes in the content of Tobermorite and calcium carbonate due to carbonation.

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