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Mechanical and Repair Performance of Sprayed Ductile Fiber Reinforced Cememtitious Composite(ECC)
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 Title & Authors
Mechanical and Repair Performance of Sprayed Ductile Fiber Reinforced Cememtitious Composite(ECC)
Kim, Yun-Yong;
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 Abstract
This paper presents an experimental study on the potential durability enhancement of infrastructures repaired by a sprayed high ductile fiber-reinforced cementitious composite (ECC). For this study, a PVA-ECC which exhibits sprayable properties in the fresh state and tensile strain-hardening behavior in hardened state was sprayed and tested. The experimental results show that the sprayed ECC exhibits mechanical properties with strain capacity comparable to the cast ECC with the same mix design. During loading, the crack widths of ECC are tightly controlled with an average of 30. It is also revealed that when sprayed ECC is used as a repair material, ductility represented by deformation capacity at peak load of repaired beams in flexure are obviously increased in comparison to those of commercial prepackaged mortar (PM) repaired beams. In addition to high delamination resistance, the significant enhancement of energy absorption capacity and crack width control in ECC repair system suggest that sprayed ECC can be effective in extending the service life of rehabilitated infrastructures.
 Keywords
sprayed ECC;concrete repair;tensile strain-hardening behavior;crack width control;energy absorption capacity;
 Language
Korean
 Cited by
1.
거더교의 슬래브 연속화를 위하여 도입한 고인성 콘크리트 (ECC) 연결슬래브의 거동 특성,김윤용;;

대한토목학회논문집, 2003. vol.23. 6A, pp.1143-1154
2.
미세역학이론과 레올로지 제어에 의한 습식스프레이용 고인성 섬유보강 모르타르(ECC)의 개발,김윤용;

한국콘크리트학회논문집, 2003. vol.15. 4, pp.557-565 crossref(new window)
3.
고로슬래그미분말이 혼입된 ECC(Engineered Cementitious Composite)의 개발,김윤용;김정수;하기주;김진근;

한국콘크리트학회논문집, 2006. vol.18. 1, pp.21-28 crossref(new window)
4.
마이크로역학에 의하여 설계된 ECC (Engineered Cementitious Composite)의 역학적 특성,김윤용;김정수;김희신;하기주;김진근;

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5.
섬유보강 고인성 시멘트 복합체 패널의 2축 전단 비선형 모델,조창근;김윤용;

한국전산구조공학회논문집, 2009. vol.22. 6, pp.597-605
6.
압출성형 ECC 패널의 섬유분포 특성과 휨 성능,이방연;한병찬;조창근;권영진;김윤용;

한국콘크리트학회논문집, 2009. vol.21. 5, pp.573-580 crossref(new window)
7.
폴리에틸렌 단일섬유를 혼입한 SHCC로 휨 보강된 콘크리트 보의 균열손상 제어 및 휨 성능,김준수;이영오;심영용;윤현도;

한국콘크리트학회논문집, 2012. vol.24. 4, pp.361-368 crossref(new window)
8.
비정질강섬유 보강콘크리트 작업성 및 섬유 분산성 비교분석,김병일;이세현;

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1.
Comparison Analysis of Fiber Distribution and Workability for Amorphous Steel Fiber Reinforced Concrete, Journal of the Korean Institute of Resources Recycling, 2014, 23, 4, 47  crossref(new windwow)
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