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http://dx.doi.org/10.11112/jksmi.2006.10.2.83

An Experimental Study of Spalling Characteristics of High-Strength Reinforced Concrete Columns with PP Fibers  

Sin, Sung-Woo (한양대학교 건축학부)
Yu, Suk-Hyeong (한양대학교 친환경건축 기술혁신 연구센터)
Publication Information
Journal of the Korea institute for structural maintenance and inspection / v.10, no.2, 2006 , pp. 83-90 More about this Journal
Abstract
A spalling is defined as the damages of concrete exposed to high temperature during the fire by causing cracks and localized bursting of small pieces of concrete. It is reported that spalling is caused by the vapor pressure and polypropylene(PP) fiber has an important role in protecting from spalling. The characteristics of fire resistance of high-strength reinforced concrete columns with various concrete strength and various contents of PP fiber were investigated in this study. In results, the ratio of unstressed residual strength of columns increases as the concrete strength increases and the ratio of unstressed residual strength of columns exposed to fire decreases as the content of PP fiber increases from 0% to 0.2%.
Keywords
Spalling; Fire Resistance; High-Strength Concrete; Polypropylene Fiber;
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