[1093] Carbonation and Chloride Penetration into Concrete After High Temperature Exposure
キーワード：Durability, Electrical resistance method, High temperature exposure, Moisture transfer
The aim of the research is to understand how carbon dioxide and chloride penetrate into post-fire concrete which can be used without repairing, by investigating the moisture transfer in concrete. Concrete specimens with water-to-cement ratios of 0.35 and 0.45 were heated up to 350 °C. Then, the moisture transfer, and accelerated carbonation and chloride penetration depths in the specimens were measured. As a result, the carbonation and chloride penetration depths of the heated specimen were larger than the unheated specimen because of low moisture content and micro-cracks.