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http://dx.doi.org/10.12652/Ksce.2010.30.4A.391

Evaluation of Fire Performance of RC Slabs with Half-Depth Precast Panels  

Chung, Chul-Hun (단국대학교 토목환경공학과)
Im, Cho-Rong (단국대학교 토목환경공학과)
Kim, Hyun-Jun (단국대학교 토목환경공학과)
Joo, Sang-Hoon ((주)케이씨산업개발 기술연구소)
Publication Information
KSCE Journal of Civil and Environmental Engineering Research / v.30, no.4A, 2010 , pp. 391-398 More about this Journal
Abstract
The fire performance of RC slabs with half-depth precast panel after exposure to the ISO-834 fire standard without loading has been experimentally investigated. During heating, according to the ISO 834 fire curve, concrete spalling was observed for concrete without PP(polypropylene) fibers. No spalling occurred when heating concrete containing PP fibers. The maximum temperature of RC slabs with PP fibers with half-depth precast panel was lower than that of concrete without PP fibers. The ultimate load after cooling of the RC slabs that were not loaded during the furnace tests was evaluated by means of 3 points bending tests. The ultimate load of the RC slabs without PP fibers showed a considerable reduction (around 32.5%) of the ultimate load after cooling if compared with of RC slabs with PP fibers. The ultimate load of the RC slabs with half-depth precast panel with PP fibers is higher than that of a full-depth RC slabs with PP fibers. Also, the addition of PP fibers and the use of half-depth precast panel improve fire resistance.
Keywords
fire performance; PP(polypropylene) fiber; explosive spalling; fire curve; half-depth precast panel; ultimate load;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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