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초고강도 내화 콘크리트의 현장 적용을 위한 내화성능 평가에 관한 연구
백영운 ( Baek Young-woon ),육태원 ( Yuk Tae-won ),박동수 ( Park Dong-soo ),김한솔 ( Kim Han-sol ),이한승 ( Lee Hang-seung ) 한국건축시공학회 2023 한국건축시공학회 학술발표대회 논문집 Vol.23 No.2
The physical performance of high-strength concrete deteriorates when exposed to high temperatures such as fire. In particular, in the case of ultra-high-strength concrete, there is a high possibility of explosion due to internal water pressure and thermal expansion due to the tight internal structure. In this paper, a fire resistance certification test was conducted for field application of ultra-high-strength fire-resistant concrete, and the fire resistance performance (temperature rise of main rebar) was compared according to the structural concrete cover thickness. As a result, when the covering thickness was 40 mm, three structures did not meet the certification standards, and when the covering thickness was 50 mm, all structures met the fire resistance certification standards