한국건축시공학회지 (Journal of the Korea Institute of Building Construction)

  • 제22권3호
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  • Pages.229-237
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  • 2022
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  • 1598-2033(pISSN)
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  • 2233-5706(eISSN)
한국건축시공학회 (The Korean Institute of Building Construction)
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UHPC를 활용한 건축용 외장 패널 특성에 관한 실험적 연구

Experimental Study of Exterior Panel Properties using Ultra High Performance Concrete

  • Park, Oh-Seong (Graduate School, Department of Materials Engineering, Pukyong National University) ;
  • Cho, Hyeong-Kyu (Carbon Neutrality & Materials Digitalization Division, Korea Institute of Ceramic Engineering and Technology)
  • 투고 : 2022.04.25
  • 심사 : 2022.05.26
  • 발행 : 2022.06.20
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초록

초고성능 콘크리트(UHPC)는 낮은 물-바인더비(W/B), 고성능 감수제(SP), 혼화재 및 강섬유(Steel Fiber)의 혼입으로 일반 콘크리트보다 유동성, 강도 등에서 월등히 우수한 성능을 지닌 건설 재료이다. 본 연구에서는 UHPC를 활용하여 기존의 석재 패널을 대체할 수 있는 건축용 외장 패널을 제작하였다. 또한, UHPC의 W/B비 배합별 동일한 혼화제 투입량, 충전재의 혼입량, 소포제 및 강섬유 혼입 유무의 차이로 변수를 가지고 실험을 진행하였다. 평가 항목으로는 콘크리트 압축강도, 휨강도, 충격강도, 흡수율, 내동해성 등 물성 및 내구성 테스트를 진행하였다. 실험결과, 압축강도 최대 115.5MPa, 휨강도 20.3MPa을 확보하였으며 흡수율 1%이내, 충격강도 및 내동해성 평가는 규격 내 겉보기 관찰 결과 이상 없음 결과를 만족하였다.

Ultra High Performance Concrete(UHPC) is a construction material that has a low water-binder ratio (W/B), a high-performance chemical admixture(SP), mixing material and steel fiber, and performance superior to that of regular concrete in terms of liquidity and strength. In the study, UHPC was used to prepare construction external panels that can replace existing stone panels. In addition, experiments were conducted to access the effects of differences in chemical admixture input amount, the number of fillers, antifoaming agent and steel fiber. An evaluation, was conducted, such of concrete compressive strength, flexural strength, impact strength, absorption rate, and frost resistance. The results showed compressive strength up to 115.5MPa, flexural strength of 20.3MPa, and an absorption rate of 1%. In this case, impact strength and frost resistance evaluation were satisfied with outward observed.

키워드

과제정보

This research was supported by Basic Science Research Program through the National Research Foundation of Korea(NRF) funded by the Ministry of Education(2021R1F1A1053209).

참고문헌

  1. Bae BI, Choi HK, Choi CS. Correlation between tensile strength and compressive strength of ultra high strength concrete reinforced with steel fiber. Journal of the Korea Concrete Institute. 2015 Feb;27(3):253-63. https://doi.org/10.4334/JKCI.2015.27.3.253
  2. Yang IH, Joh CB, Kim BS. Structural behavior of Ultra High Performance Concrete beams subjected to bending. Engineering Structures. 2010 Nov;32(11):3478-87. https://doi.org/10.1016/j.engstruct.2010.07.017
  3. Yoo HJ, Lee SS, Song HY. Physical properties of artificial interior stone using waste resources. Journal of the Korea Institute of Building Construction. 2014 Jun;14(3):237-43. https://doi.org/10.5345/JKIBC.2014.14.3.237
  4. Park JH, Pyeon SJ, Lee SS. A study on the properties of cementless artificial stone by recycled coarse aggregate and red mud according to replacement ratio. Journal of the Korean Recycled Construction Resources Institute. 2019 Mar;7(1):50-6. https://doi.org/10.14190/JRCR.2019.7.1.50
  5. Park JW, Lee GC. Effect of compressive strength and curing condition on the direct tensile strength properties of ultra high performance concrete. Journal of the Korea Institute of Building Construction. 2017 Apr;17(2):175-81. https://doi.org/10.5345/JKIBC.2017.17.2.175
  6. Letelier V, Tarela E, Moriconi G. Mechanical properties of concrete with recycled aggregates and waste brick powder as cement replacement. Procedia Engineering. 2017 Feb;171:627-32. https://doi.org/10.1016/j.proeng.2017.01.396
  7. Park JW, Lee GC, Koh KT, Ryu GS. Study on direct tensile properties and reliability review of steel fiber reinforced UHPC. Journal of the Korea Institute of Building Construction. 2018 Apr;18(2):125-32. https://doi.org/10.5345/JKIBC.2018.18.2.125
  8. Manzi S, Mazzotti C, Bignozzi MC. Self-compacting concrete with recycled concrete aggregate : Study of the long-term properties. Construction and Building Materials. 2017 Dec;157:582-90. https://doi.org/10.1016/j.conbuildmat.2017.09.129
  9. Park JB, Yoon HS, Yang KH. Fundamental tests on Compressive strength development and thermal conductivity of cement pastes including fumed silica. Journal of the Korea Institute of Building Construction. 2018 Oct;18(5):413-18. https://doi.org/10.5345/JKIBC.2018.18.5.413
  10. Kang SH, Hong SG. Performance of fresh and hardened ultra high performance concrete without heat treatment. Journal of the Korea Concrete Institute. 2014 Feb;26(1):23-34. https://doi.org/10.4334/JKCI.2014.26.1.023