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Keywords |
폭렬해석 ; 내화성능 ; 고강도 콘크리트 ; 폴리프로필렌 섬유 Spalling analysis ; Fire resistance ; High-strength concrete ; Polypropylene fiber |
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Abstract |
The spalling analysis of high strength concrete columns needs a very complex and difficult process accounting for peeling of cover concrete as well as thermal, thermo-stress and hygro-transfer phenomena. However. the study on the spatting analysis method is insufficient. The practical spatting analysis algorithm is developed in this study which formulates a vapor pressure equation as the parameter of temperature and cover depth and uses the compatibility condition In results of the spatting analysis. as the concrete strength increases and the content of PP fiber decreases the degree of spatting increases. This shows a similar result as the previous experimental study. Therefore the developed algorithm suggested in this study is expected to be useful in predicting the spalling of high strength concrete columns.
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