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Applicability of Colormetric Method for Estimation of Chloride Penetration in Concrete Structures
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 Title & Authors
Applicability of Colormetric Method for Estimation of Chloride Penetration in Concrete Structures
Yang Eun-Ik; Kim Myung-Yu; Leem Young-Moon; Park Hae-Geun;
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When concrete structures are exposed under marine condition for a long time, the steel in concrete is corroded due to the ingression of chlorides in the seawater. Because the damages of corrosion resulting from the chloride ion are very serious, many researches have been performed. Silver nitrate colormetric method that can measure easily penetration depth of chloride ion has been executed, recent)y. However, characteristics of silver nitrate colormetric method were not fully examined. Therefore, the objective of this paper Is to study the applicability of colormetric method. For the purpose of this, effect factors and reaction mechanism of colormetric method were investigated, and the colormetric method is applied for marine concrete structures. According to the results of silver nitrate colored method, two reactions such as white reaction of AgCl and brown reaction of AgOH were shown when was sprayed in splited section. And velocity constant ratio(K) of two reactions appeared that white reaction, AgCl reacts with the fast speed by 3240. When the colormetric method was applied in concrete, it is reasonable that solution more than 0.05N concentration was sprayed. It is confirmed that the colormetric method is useful tool for estimating the chloride of concrete structures in situ. The average chloride amount of colored parts indicates per concrete unit weight.
corrosion;chloride ion;colormetric method;penetration depth;diffusion coefficient;
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한국구조물진단유지관리공학회 논문집, 2011. vol.15. 2, pp.79-87 crossref(new window)
한국콘크리트학회, 콘크리트 염해 및 탄산화로 인한 내구성 저하 방지대책 연구, 한국콘크리트학회, 2002, pp. 13-29

Gouda V. K., 'Corrosion and Corroston Inhibition of Reinforcing Steer, Br Corros Journal, Vol.5, 1970, 198pp crossref(new window)

오병환, 장승엽, 콘크리트 구조물의 염화물 확산거동 및 침투해석, 한국콘크리트학회, 연구소위원회보고서, 2001, pp.201-214

양은익, 김명유, 민석홍, '콘크리트 물성 및 시험법에 따른 콘크리트 염화물 확산', 콘크리트학회 논문집, Vol.16, No.2, 2004, pp.261-268

Otsuki N., Nagataki, S., and Nakashita K, 'Evaluation of $AgNO_{3}$ Solution Spray Method for Measurement of Chloride Penetration into Hardened Cementitious Matrix Materials', ACI Materials Journal, Vol.89, No.6, 1-2, pp.589-92

ASTM C 114, Standard Test Method for Chemical Analysis if Hydraulic Cement, Annual Book of ASTM Standards, 2000, pp.18-20

한국콘크리트학회, 콘크리트 진단 및 유지관리, 한국콘크리트학회, 2003, 254pp