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http://dx.doi.org/10.5695/JKISE.2020.53.6.300

Enhancement of Corrosion Resistance of Steel Reinforcement in Concrete by Hydrophobic Surface Treatments  

Jo, Hyunbin (Department of Metallurgical Engineering, Pukyong National University)
Shin, Dongmin (Department of Metallurgical Engineering, Pukyong National University)
Seo, Eunhye (Department of Metallurgical Engineering, Pukyong National University)
Lee, Wookjin (Korea Institute of Industrial Technology)
Lee, Junghoon (Department of Metallurgical Engineering, Pukyong National University)
Publication Information
Journal of the Korean institute of surface engineering / v.53, no.6, 2020 , pp. 300-305 More about this Journal
Abstract
Corrosion of reinforcement steel rebar is a serious problem in a wide range of concrete application for buildings and infrastructures. Hydrophobizing surface treatments, such as self-assembled monolayer coating, edible oil-impregnation and silicone oil-impregnation were applied to solidified concrete. The hydrophobizing of concrete significantly reduces an absorption and transportation of water toward a steel rebar in concrete, so that the corrosion resistance of the steel rebar. In particular, the silicone oil-impregnation not only forms the hydrophobic monolayer on the concrete but also fills the inter-connected pores of concrete, thus the corrosion of steel rebar is significantly inhibited compared to the self-assembled monolayer coating and edible oil-impregnation. Therefore, the silicone oil-impregnation can be a promising candidate for preventing corrosion of steel rebar in concrete for durable performance and safety.
Keywords
Corrosion; Concrete; Hydrophobicity; Oil-Impregnation;
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