STUDY ON CORROSION OF REINFORCING BAR DUE TO CONCRETE NEUTRALIZATION UNDER ALTERNATE DRYING AND WETTING CONDITIONS
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- QI Lukuan
- 社団法人 土木学会 早稲田大学 理工学部土木工学科
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- SEKI Hiroshi
- 社団法人 土木学会 早稲田大学 理工学部土木工学科
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- TAKAGI Kotoyoshi
- 社団法人 土木学会 東日本旅客鉄道株式会社 総合企画本部
Bibliographic Information
- Other Title
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- 中性化したコンクリートにおける乾湿繰返し作用による鉄筋腐食に関する研究
- チュウセイカ シタ コンクリート ニ オケル カンシツ クリカエシ サヨウ ニ ヨル テッキン フショク ニ カンスル ケンキュウ
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Abstract
In this paper, the two models are proposed so as to estimate corrosion rate of reinforcing bar embedded in concrete due to neutralization. In order to clarify mechanisms of reinforcing bar corrosion, the experiment that corrosion of reinforcing bar due to concrete neutralization under alternate drying and wetting conditions was carded. Measured corrosion potential, corrosion area ratio and specific resistance of concrete were used in these models. Through this analysis, it is confirmed that corrosion of reinforcing bar is oxygen control in high temperature and high humidity, specific resistance control of concrete in low temperature and low humidity. The amounts of corrosion on the theoretical analysis not only show the same tendency, but also show almost the value compare with experimental results. It is confirmed that these corrosion models of reinforcing bar is useful for calculation of corrosion amounts.
Journal
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- Doboku Gakkai Ronbunshu
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Doboku Gakkai Ronbunshu 2002 (697), 1-11, 2002-02-20
Japan Society of Civil Engineers