• Title/Summary/Keyword: 내화학 콘크리트

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Fire Resistance Performance of Recycling PET Fiber Reinforced High Strength Concrete Circular Column (재생 PET섬유 보강 고강도 콘크리트 원형기둥의 내화성능)

  • Seo, Tae-Seok;Gong, Min-Ho;Kwon, Hae-Won
    • Journal of the Korea Institute of Building Construction
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    • v.16 no.6
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    • pp.513-518
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    • 2016
  • This study evaluates the fire resistance performance for 60MPa high strength concrete reinforced by recycling polyethylene-terephthalate(PET) fiber(fiber content : 0.05 vol.%). Because there is no fire resistance test results for circular concrete column, a fire resistance test was carried out for circular concrete column specimens. As a result, it was confirmed that PET fiber was effective against the spalling control of high strength concrete. However, the specimen with cover thickness 30mm did not satisfy the temperature standard of main reinforcement, and the specimen with cover thickness 40mm satisfied the temperature standard of main reinforcement. Therefore, more than 40mm cover thickness was demanded for stable fire resistance performance.

Design of Fire-Resistance in RC Structure Buildings (콘크리트 구조물의 내화설계)

  • 김화중
    • Magazine of the Korea Concrete Institute
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    • v.14 no.2
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    • pp.30-36
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    • 2002
  • 콘크리트가 화재에 노출될 경우 가열에 의한 재질의 노화 및 열팽창에 의한 열응력의 발생에 따라 주요구조부인 기둥 및 보에 큰 손상이 생기게 되어 그 내력은 크게 저하하게 된다. 철근 콘크리트 구조물의 화재 상황을 조사해 보면 (그림 1)과 같이 열응력에 의한 기둥의 전단파괴, 보의 휨파괴 및 부재의 폭열 등이 보여진다.(중략)