In this study, we evaluated the internal temperature history by ISO-834 Standard Heating Curve on unloaded condition to evaluate effect on temperature history of concrete column according to difference of water-cement ratio and concrete column size. T...
In this study, we evaluated the internal temperature history by ISO-834 Standard Heating Curve on unloaded condition to evaluate effect on temperature history of concrete column according to difference of water-cement ratio and concrete column size. The difference between the internal temperature history on the compressive strength is about 1-4% and big tendency was not observed. □300mm×300mm specimen``s average temperature 13.9%, maximum temperature 13.6% are higher than □ 400mm×400mm because of difference of thermal capacity due to difference of specimens``s size and the result of average temperature was above the national regulations. Thus, the scope of this study, we suggest as a range that 50mm more than the thickness of the coating and size of column □400mm×400mm is optimum fire safety design as a range.