Journal of the Korean Crystal Growth and Crystal Technology (한국결정성장학회지)

The Korea Association of Crystal Growth (한국결정성장학회)
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Mechanical properties of carbon fiber sheet and carbon fiber strand sheet based on carbon fibers for the reinforcement of highway bridge RC slabs

도로교 RC 상판 보강을 위한 탄소섬유 기초 carbon fiber sheet와 carbon fiber strand sheet의 역학특성

  • Won, Chan Ho (The Research Institute of Industrial Science, Hanyang University) ;
  • Abe, Tadashi (Dept. of Civil Engineering, College of Industrial Technology, Nihon University) ;
  • Ahn, Tae-Ho (International Sustainable Engineering Materials (ISEM) Center, Ceramic Materials Institute & Division of Advanced Materials Sci. Eng., Hanyang University)
  • 원찬호 (한양대학교 부설산업과학연구소) ;
  • ;
  • 안태호 (한양대학교 신소재공학과, 세라믹연구소 국제지속가능공학소재(ISEM)센터)
  • Received : 2015.11.16
  • Accepted : 2015.11.27
  • Published : 2015.12.31
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Abstract

Recently, a lot of interest has been shown in structural maintenance managements of civil infrastructures. Many researchers have been conducted on various maintenance techniques and repair materials. Among other fiber materials the carbon fiber materials are especially focused on maintenance management of Highway Bridges. Extensive work has been done on Carbon Fiber Sheet (CFS). Nevertheless, Carbon Fiber Strand Sheet (CFSS) is a newly developed material, on which limited work has been done until now. Therefore, in this study bonding the CFSS to RC slab specimen and fatigue resistance evaluation has been conducted. The results demonstrated an increase of 25.3 times more reinforcement of RC slab compared to non-reinforced RC slab. Moreover, compared to CFS-bonded RC slab, The CFSS-bonded RC slab showed 1.2 times greater reinforcement.

최근 사회기반시설물의 구조물 유지관리 분야의 관심이 높아짐에 따라 새로운 유지관리 공법 및 신소재에 관한 연구가 활발히 진행되어지고 있다. 그중에서도 유지관리의 주요 대상인 교량 유지관리에는 탄소섬유를 이용한 공법이 주목을 받고 있다. 탄소섬유시트(Carbon Fiber Sheet, 이하 CFS)는 이미 여러 연구자들이 국내에서도 재료시험 및 보강공법에 관한 연구를 진행하여 연구결과가 보고되고 있지만, 탄소섬유 스트랜드 시트(Carbon Fiber Strand Sheet, 이하 CFSS)는 최근 새롭게 개발된 재료로써 아직까지 국내에는 연구 성과가 없는 실정이다. 따라서, 본 연구에서는 CFSS를 RC 상판 공시체에 접착보강하여 내피로성을 평가하였다. 그 결과, 무보강 RC 상판 공시체에 비해 약 25.3배의 보강 효과가 확인되었고, CFS 접착보강 RC 상판 공시체에 비교하여 약 1.2배의 보강 효과가 확인되었다.

Keywords

References

  1. M. Takano, T. Abe, T. Kida, A. Komori, T.Kodama and Y. Ogawa, "Fatigue resistance by the CFSS bottom reinforcement and SFRC upper overlaid of RC slabs used for 47 years", J. Struc. Eng. 57A (2010) 1286.
  2. C.H. Won, T. Abe, T. Kida, M. Takano and A. Komori, "The effect of reinforcement and fatigue resistance of the CFS- and CFSS-reinforced RC slabs", J. Struc. Eng. 58A (2012) 1189.
  3. C.H. Won, T. Abe, T. Kida and A. Komori, "Evaluation of the fatigue resistance of RC slabs strengthened by bonding CFS, CFSS lattices, and proposal of an S-N curve equation", Cem. Sci. & Conc. Tech. 66 (2013) 576.
  4. T. Abe, K. Minakuchi, C.H. Won and Y. Kawai, "Evaluation of fatigue resistance of RC slabs with fatigue damage given primary and secondary strengthen", J. Struc. Eng. 59A (2013) 1101.
  5. W.C. Oh, B.S. Kim, C.S. Lim and W.C. Jang, "Preparation and properties of antibacterial activated carbon fiber", J. Korean Cryst. Growth Cryst. Technol. 12 (2002) 165.
  6. T. Abe, H. Suzuki, Y. Kishi and K. Nomoto, "The effect of adhesive on the fatigue resistance of RC slabs strengthened by SFRC upper surface thickness increasing method", J. Struc. Eng. 59A (2013) 1084.
  7. K. Ito, T. Abe, M. Sugano and T. Kodama, "Evaluation of fatigue resistance of highway bridge RC slabs that have been strengthened by partial replacement", J. Struc. Eng. 59A (2013) 1092.
  8. Public Works Research Institute, "Joint research report on the repair, reinforcement of concrete member, - The design and construction guidelines (plan) for the repair and reinforcement of highway bridge concrete parts using adhesive-bottom side carbon fiber sheets (CFS) -", Public Works Research Institute, (Public Works Research Institute, Miyagi, 1999).
  9. Japan Road Association, "Specifications for highway bridges . commentary", Japan Road Association, Part I. Common, Part II. Steel bridge (Maruzen, Tokyo, 2002).
  10. M. Shigeyuki, "Highway bridge slab design.construction and maintenance", M. Shigeyuki (Morikita, Tokyo, 2007).

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  1. Reinforcing effects of carbon fiber sheet by compressive strength differences on the RC slabs vol.26, pp.1, 2016, https://doi.org/10.6111/JKCGCT.2016.26.1.023