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Spalling Reduction Method of High-Strength Reinforced Concrete Columns Using Insulating Mortar  

Yoo, Suk-Hyeong (경남과학기술대학교 건축공학과)
Lim, Seo-Hyeong (경남과학기술대학교 건축공학과)
Publication Information
Fire Science and Engineering / v.25, no.6, 2011 , pp. 8-13 More about this Journal
Abstract
High Strength Concrete (HSC) has a disadvantage of the brittle failure under fire due to the spalling. The studies on spalling control method of new constructed HSC buildings were performed enough, but the studies on existing buildings are insufficient. The new inorganic refractory mortar is developed in this study. The insulating capacity is enhanced by using light weight fine aggregate and polypropylene (PP) fiber. In results of material test, the thermal conductivity of light weight fine aggregate get lower than general fine aggregate. And in results of column test, the fire resisting time is delayed 20 minutes by using light weight fine aggregate, 10 minutes by increasing finishing depth from 10 mm to 20 mm and 4 minutes by using 0.6 % PP fiber.
Keywords
Spalling; Fire resistance; High-strength concrete; Light weight fine aggregate; Polypropylene;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
연도 인용수 순위
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