Abstract
In this study, a material heating test was carried out and the results were analyzed. Various variables were employed to identify the limitations of the concrete discoloration discrimination method, a method for estimating the heating temperature. The material heating specimens did not use admixture additives, and various design compressive strengths were employed. After the heating experiment, surface color analysis was performed on the cooled specimens to quantitatively analyze the discoloration state of the concrete according to the exposure temperature. As a result, it was judged that the currently used concrete discoloration discrimination method is inadequate for estimating the heating temperature. Moreover, it was confirmed that the development of a new heating temperature estimation method is necessary.
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