[Updated on Apr. 18] Integration of CiNii Articles into CiNii Research

CORROSION MECHANISM OF REINFORCING BAR EMBEDDED IN CONCRETE DAMAGED DUE TO NEUTRALIZATION AND UNDER ALTERNATE DRYING AND WETTING CONDITIONS

  • NIHEI Tatsuya
    社団法人 土木学会 財団法人鉄道総合技術研究所 元 早稲田大学大学院理工学研究科建設工学専攻
  • IHARA Hirotomo
    社団法人 土木学会 早稲田大学大学院理工学研究科建設工学専攻
  • 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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Other Title
  • 中性化および乾湿繰返しを同時に受けるコンクリート中鉄筋の腐食機構に関する研究
  • チュウセイカ オヨビ カンシツ クリカエシ オ ドウジ ニ ウケル コンクリート チュウ テッキン ノ フショク キコウ ニ カンスル ケンキュウ

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Abstract

The paper discusses neutralization of concrete which causes corrosion of reinforcing bars based on the experimental work and the analytical approach. Acceleration that applied consists of the promoting neutralization and the alternate wet and dry conditions. The equation between the reinforcing neutralization depth of concrete and the electrical potential are experimentally obtained. Then, corrosion model of bars is analytically constructed mainly based on the equation which included the factor of passing time. Finally, the equation is proposed, which is able to estimate the corrosion amount of reinforcing bar exposed to simultaneous neutralization and wet and dry condition.

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