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Title |
Evaluation on the Thermal Resistance Capacity of Fire Proof Materials for Improving Fire Resistance of Near-Surface-Mounted FRP in Concrete
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Keywords |
FRP ; 내화실험 ; NSM 보강 ; 보강방법 ; 내화재료 ; 에폭시 ; 유리전이온도 ; FRP ; Fire exposure test ; Near-surface-mounted retrofit ; Retrofit method ; Materials for fire resistance ; Epoxy ; Glass transit temperature |
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Abstract |
This paper presents a fire exposure test result to evaluate fire resistance capacity of retrofit method using FRP (Fiber Reinforced Polymer) in reinforcement concrete structure. Especially, this paper focused on near-surface-mounted retrofit method; FRP is mounted into the groove after making a groove in concrete. In the test, main parameters are retrofit method and materials for fire proofing. Spray type of perlite and board type of calcium silicate were considered as external fire proof on surface while particle of calcium silicate and polymer mortar as internal one in groove. By increasing the temperature of inside heating furnace, the transfer of temperature from surface of fire proofing material to groove in specimen was measured. As a result, fire proofing using the board of calcium silicate was more effective to delay the heat transfer from outside than spraying with perlite. It was found that the fire proofing could resist outside temperature of 820℃ at maximum to keep the temperature of epoxy below glass transit temperature (GTT).
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