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Title |
State-of-the-Art Research and Experimental Assessment on Fire-Resistance Properties of High Strength Concrete
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Keywords |
고강도 콘크리트 ; 내화 특성 ; 하이브리드 섬유 High strength concrete ; Fire-resistance properties ; Hybrid fiber |
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Abstract |
This paper reviews past literatures relevant to fire-resistance properties of high strength concrete and investigates spalling mechanism of high strength concrete in fire. First, literatures were reviewed on spalling occurrence and fire-resistance methods. Second, a chemical change of concrete components in an elevated temperature was presented. Finally, the mechanism of the spalling occurrence and spalling resistance were examined in terms of hybrid fiber content. The focus of the experimental study as part of this research is to investigate the effects of fire on the variation of thermal properties of high strength concrete, which tends to be used in super tall buildings. This experimental study was devised to investigate the fire-resistance performance of high strength concrete containing hybrid fibers. A total of 48 test specimens were exposed to high temperature ranging from 100℃ to 700℃, including room temperature (~20℃). Test results provide valuable information regarding fire-resistance properties of strength concrete with 100 MPa or greater.
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