A Basic Study on crack characteristics depending on the mixture rate and heating temperature of calcium hydroxide in high-strength concrete, containing a high percentage of blast-furnace slag

고로슬래그를 다량 치환한 고강도 콘크리트의 수산화칼슘 함유율 및 가열온도에 따른 균열성상에 관한 기초적 연구

This study is conducted to investigate the characteristics of cracks depending on the different mixture rates of calcium hydroxide and distilled water in high-strength concrete, which is substituted with a high percentage of blast-furnace slag, by using specimens produced under different heating temperatures: 600℃, 800℃, and 1000℃, respectively. According to the results of the study, the specimen heated under the temperature of 600℃ did not produce cracks; the specimen heated under 800℃ produced little cracks and showed no difference between calcium hydroxide and distilled water; whereas the specimen heated under 1000℃ produced cracks larger than 5mm on average in the case of calcium hydroxide, compared to distilled water.