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논문 기본 정보

자료유형
학술저널
저자정보
박민재 (고려대) 민정기 (한국건설생활환경시험연구원)
저널정보
대한건축학회 대한건축학회논문집 大韓建築學會論文集 第37卷 第9號(通卷 第395號)
발행연도
2021.9
수록면
179 - 187 (9page)

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초록· 키워드

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Explosive spalling is one of the significant considerations of concrete structures, despite the great fire resistance performance of the concrete. In general, explosive spalling of HSC (Hign Strength Concrete) was variously investigated due to the higher possibility of spalling rather than its of NSC (Normal Strength Concrete). However, in a specific condition such as higher than 4% w/c, explosive spalling of NSC can be occurred and concrete structures with NSC should be considered to preventing them. Due to several cases for spalling of NSC, the importance of investigating them was consolidated. In this study, the spalling of NSC under construction conditions was surveyed by large-scale fire tests, and the damage of concrete structures such as section loss was investigated. Due to violent spalling of NSC at early stages after heating, the cover of concrete was removed, and most of the reinforcements were exposed. These damages weakened the structural performance of concrete structures, and the temperatures of reinforcements dramatically rose. In other words, these damages can make the structures collapse. Also, connections such as anchors and splice sleeves can be failed due to section loss. For this reason, the capacities of the anchors in this study with intact section and damaged sections were investigated according to Korea Design Standard. The reduction ratios for capacities of the anchors under tension and shear were obtained.

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Abstract
1. 서론
2. 실화재 실험
3. 실험 결과
4. 결론
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