Journal of the Korea Institute of Building Construction (한국건축시공학회지)

The Korean Institute of Building Construction (한국건축시공학회)
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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 (Advanced Material R& D Team, Hyundai Engineering & Construction) ;
  • Gong, Min-Ho (Research & Development Center, Hyundai Engineering) ;
  • Kwon, Hae-Won (Research & Development Center, Hyundai Engineering)
  • Received : 2016.07.27
  • Accepted : 2016.10.11
  • Published : 2016.12.20
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Abstract

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.

본 연구에서는 PET섬유(혼입율: 0.05vol.%)로 보강된 60MPa 고강도 콘크리트의 내화특성을 검토하였다. 특히 원형 기둥에 대한 내화실험 결과가 아직까지 없기 때문에 콘크리트 원형기둥을 대상으로 내화시험을 실시하였다. 그 결과 PET섬유가 고강도 콘크리트 폭렬 제어에 효과가 있는 것을 확인할 수 있었다. 하지만 피복두께 30mm 시험체에서는 주철근 온도규정을 만족시키지 못하는 것으로 나타났고 피복두께 40mm 시험체에서는 주철근 온도규정을 만족하는 것으로 나타났다. 따라서 내화성능을 만족하기 위해서는 40mm 이상의 피복두께가 필요할 것으로 판단된다.

Keywords

References

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