고내구성 재료를 사용한 해양 콘크리트 부재의 휨 거동 특성
haracteristics of Flexural Behaviors for Marine Concrete Members Using High-Durable Materials
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The durability of marine concrete structure is severely degraded by corrosion due to penetration and diffusion of chloride. So, many researches have been performed to improve the durability in marine concrete structure. In this study, the concrete members mixed with the mineral admixtures(SF and BFS), the epoxy-coated steel, and corrosion inhibitors are prepared, and four-point bending test of specimens are performed to investigate the flexural behaviors and the applicability for marine concrete structure. From the test results, the mineral admixtures and inhibitors are useful for safety against the initial cracking and the bending resistance in specimens. When the durable material is used in specimen, the tensile stress of reinforcing rod was less variable in same bending span length, and the durable member showed a stable behavior. And it is evaluated that the crack spacing is not larger in specimen used the durable material.
Abstract
The durability of marine concrete structure is severely degraded by corrosion due to penetration and diffusion of chloride. So, many researches have been performed to improve the durability in marine concrete structure. In this study, the concrete members mixed with the mineral admixtures(SF and BFS), the epoxy-coated steel, and corrosion inhibitors are prepared, and four-point bending test of specimens are performed to investigate the flexural behaviors and the applicability for marine concrete structure. From the test results, the mineral admixtures and inhibitors are useful for safety against the initial cracking and the bending resistance in specimens. When the durable material is used in specimen, the tensile stress of reinforcing rod was less variable in same bending span length, and the durable member showed a stable behavior. And it is evaluated that the crack spacing is not larger in specimen used the durable material.
참고문헌 (13)
- 고경택, "해양 콘크리트 구조 물의 재료 및 시공", 콘크리트 학회지, pp.26~30 (2004)
- 김동석, "무기질 혼화재가 염수침지한 콘크리트의 염화물 확산에 미치는 영향에 관한 연구", 콘크리트학회 논문집, 17(5), pp.679~686 (2005), 한국콘크리트학회
- 김영진, "혼화재 종류 및 치환율이 콘크리트의 내염성능 향상에 미치는 영향에 관한 연구", 콘크리트학회 논문집, 16(3), pp.319~326 (2004), 한국콘크리트학회
- 문한영, "해양환경하에 위치한 콘크리 트 구조물의 내구성 저하", 한국콘크리트학회 연구위 원회 발표집, pp.57~71 (2002)
- 배수호, "방청제를 사용한 콘크리트의 성능 평가", 대한토목학회 논문집A, 23(5A), pp.815~822 (2003), 대한토목학회
- 송하원, "고로슬래그 미분말 콘크리트의 염화물 침투 저항성에 관한 연구", 콘크리트학회 논문집, 15(3), pp.400~408 (2003), 한국콘크리트학회
- 양은익, "해양환경에 노출된 고내구성 콘크리트의 전기화학적기법을 이용한 부식저항성 평가", 한국해안·해양공학회논문집, 19(4), pp.320~328 (2007), 한국해안,해양공학회
- C. Andrade, "Some laboratory experiments on the inhibitor effect of sodium nitrite on reinforcement corrosion", pp.110~116 (1986), Cem. Con. Agg.
- H.W. Chung, "Epoxy Repair of Bond in Reinforced Concrete Members", ACI Journal, 78, pp.79~85 (1981)
- P. Rodriguez, "Methods for studying corrosion in reinforced concrete", Magazine of Concrete Research, pp.81~90 (1994)
- A. Ababneh, "Chloride Penetration in Non-saturated Concrete", Journal of Materials in Civil Engineering ASCE, pp.183~191 (2003)
- ATENA, "Cervenka Consulting", ~ (2001)
- K.Y. Ann, "Effect of calcium nitrite- based corrosion inhibitor in preventing corrosion of embedded steel in concrete", pp.530~535 (2006), Cement and Concrete Res