Study on effects of heterogeneity on current propagetaion of reinforced concrete

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  • 鉄筋コンクリートにおける非均一性が電流伝導特性に及ぼす影響に関する研究
  • テッキン コンクリート ニ オケル ヒキンイツセイ ガ デンリュウ デンドウ トクセイ ニ オヨボス エイキョウ ニ カンスル ケンキュウ

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Abstract

Recently, the polarization resistance method is highly noticed as a non-destructive test method to evaluate the corrosion rate of rebar in concrete structures. The corrosion rate can be estimated from the apparent polarization resistance and the polarized area. The polarized area is often evaluated by numerical methods such as boundary element method. The material heterogeneity such as rebar corrosion or altered concrete is one of the most important affectors on the current propagation in a reinforce concrete. However, it is not well evaluated by boundary element method. Thus, in this study, finite element method is employed to evaluate the current propagation. In the results, the properties of current propagation are strongly affected by the material heterogeneity.

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