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Title |
Estimation Method of Residual Performance for Hollow Slab at Elevated Temperature
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DOI |
https://doi.org/10.4334/JKCI.2014.26.5.643 |
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Keywords |
중공슬래브 ; 내화성능 ; 잔존강도 ; 처짐 ; hollow slab ; fire resistance performance ; residual strength ; deflection |
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Abstract |
Generally, the reinforced concrete slab has great fire resistance performance because concrete has excellent thermal material properties under fire. But, in the case of hollow slab, it will be expected that hollow slabs have different temperature distribution and fire endurance performance compare to reinforced concrete slab. Because hollow slab has internal void space that occurs decreasing regenerative effect of concrete and formation of internal air layer. Evaluation method for fire resistance performance of hollow slabs was proposed using wickstrom's method. For the casual use of evaluation, simplified method was proposed which was limited to solid slab and donut type hollow slab which was developed by authors of this research paper. Also, verification on proposed method was performed by comparing results of fire experiment for hollow slab and evaluation results. Proposed method of the results of this study was possible to predict the residual strength and temperature distribution of slabs under fire.
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