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Spalling Reduction Methods of Ultra High-Strength Reinforced Concrete Columns  

Shin, Sung-Woo (한양대학교 건축학부)
Yoo, Suk-Hyeong (한양대학교 친환경건축 연구센터)
Kim, In-Ki (한양대학교 건축공학과)
Publication Information
Journal of the Korea institute for structural maintenance and inspection / v.10, no.5, 2006 , pp. 171-178 More about this Journal
Abstract
It was presented that the spalling of high strength concrete exposed to high temperature could be reduced by using polypropylene fiber. However, as the concrete strength increase, the demanded quantity of PP fiber increase and this results in the loss of workability of ultra high strength concrete. The silica fume which is essentially mixed in ultra high strength concrete decrease the permeability of concrete, and this will increase the degree of spalling. In this study the effect of silica fume on the spalling of ultra high strength concrete and the fire resisting efficiency of PP fiber and poly vinyl alchol, instead of PP fiber, for the security of workability were experimentally examined.
Keywords
Spalling; Fire damage; Fire endurance material; Residual strength; Polypropylene fiber;
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  • Reference
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