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Title |
Evaluation of Material Properties of Fire-damaged Concrete Under Post-fire Curing Regimes Using Impact Resonance Vibration Method
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Authors |
박선종(Sun-Jong Park) ; 임홍재(Hong Jae Yim) |
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DOI |
https://doi.org/10.11112/jksmi.2017.21.5.042 |
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Keywords |
손상 회복 ; 동탄성계수 ; 화재 손상 콘크리트 ; 충격공진기법 ; 재양생 조건 ; 인장강도 Damage recovery ; Dynamic elastic modulus ; Fire-damaged concrete ; Impact resonance vibration method ; Post-fire curing regimes ; Tensile strength |
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Abstract |
When concrete structures expose to fire, the structures were damaged accompanied with degradation of material properties of concrete. In order to determine the reuse of fire-damaged concrete structures, it is needed a careful determination considering conditions of fire damage, such as exposure temperature and exposure time, and also potential to restore fire damage. This study investigates on the evaluation of residual material properties of fire-damaged concrete under different post-fire curing regimes. An experimental study was performed on concrete samples to measure the dynamic elastic modulus by the impact resonance vibration method. Upon the experimental results, the evidence of restoration of material properties was confirmed on specific post-fire curing regimes, higher humidity conditions. Additionally, a correlation analysis was performed on the dynamic elastic modulus with the tensile strength for identifying the effects of post-fire curing regimes on both material properties of fire-damaged concrete.
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