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Spalling Reduction Effect of PP Fibers and Silica Fume on High Strength Reinforced Concrete Columns  

Yoo, Suk-Hyeong (진주산업대학교 건축학부)
Publication Information
Fire Science and Engineering / v.23, no.4, 2009 , pp. 1-6 More about this Journal
Abstract
High Strength Concrete has a disadvantage of the brittle failure under fire due to the spalling. It is reported that spalling is caused by the vapor pressure under fire and polypropylene (PP) fiber has an important role in protecting from spalling. The silica fume which is essentially mixed in high strength concrete decrease the permeability of concrete, and this will increase the degree of spalling. The fire resistance characteristics of high-strength reinforced concrete columns with various contents of PP fiber and silica fume were investigated in this study. In results, the ratio of unstressed residual strength of columns increases as the content of PP fiber increases from 0% to 0.2% and the ratio decreases as the content of silica fume increases from 7% to 21%.
Keywords
Spalling; Fire resistance; High-strength concrete; Polypropylene fiber; Silica fume;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
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