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A Study on the Effects of Fire-Resistant Coating Materials for Prevention of Concrete Spalling  

Jeong, Eui-Dam (충북대학교 대학원 도시공학과)
Song, Myong-Shin (강원대학교 화학공학연구소)
Kang, Hyun-Ju (강원대학교 화학공학연구소)
Kang, Seung-Min (강원대학교 화학공학과)
Publication Information
Journal of the Korean Society of Hazard Mitigation / v.10, no.5, 2010 , pp. 9-15 More about this Journal
Abstract
Recently, the high-compressive strength concrete where the use is extending was weak in fire because of spalling that was occurring with rise of internal vapor pressure by high temperature. For preventing spalling of high-strength concrete in fire, Organic fibers have been using in concrete generally. By melting of organic fibers in concrete in fire, the internal moistures of concrete moves quickly to the outside, and so, preventing of spalling of high-strength concrete. But this method will be able to prevent the spalling of high-strength concrete, but makes the decrease of the concrete strength after fire. This study make a comparison between properties of preventing of spalling and remaining compressive strength of concrete using intumescence Alkali-Silicates fire-resistant material and that of concrete with organic fibers. Using organic fibers for preventing of spalling of concrete are P.P and Nylon fibers, and anti-fire intumescence material for protection of concrete surface is alkali-silicate materials. Fire resistance test executed as long as 3 hr under the flame temperature $1,200^{\circ}C$ over. In the case of concrete with P.P fibers, don't occurred the spalling, but the remaining compressive strength will not be able to measure, the concrete using intumescence Alkali-Silicates system fire-resistant material is not only preventing of the spalling but also the remaining compressive strength maintained until the maximum 96%.
Keywords
High-Strength Concrete; Spalling; Organic fiber; Intumescence; Alkali-Silicates; Remains compressive strength;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
연도 인용수 순위
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