Assessment of Corrosion near Exposed Rebars in Reinforced Concrete Manhole

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  • Takeuchi Yosuke
    Access Network Service Systems Laboratories, NTT Corporation Device Technology Laboratories, NTT Corporation
  • Makino Ryou
    Access Network Service Systems Laboratories, NTT Corporation
  • Tamamatsu Junichirou
    Access Network Service Systems Laboratories, NTT Corporation

Bibliographic Information

Other Title
  • 鉄筋コンクリートマンホールの露筋部近傍の腐食評価
  • 材料と環境2023 講演大会論文 鉄筋コンクリートマンホールの露筋部近傍の腐食評価
  • ザイリョウ ト カンキョウ 2023 コウエン タイカイ ロンブン テッキン コンクリートマンホール ノ ロキンブ キンボウ ノ フショク ヒョウカ

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Abstract

<p>Reinforced concrete structures are generally repaired when cracks or exposed rebar are detected. However, considering the shortage of maintenance personnel for infrastructure facilities, it becomes necessary to continue monitoring even after rebar exposure and predict the optimal timing for repairs. Therefore, in this study, accelerated tests using simulated rebar exposure specimens and field investigations of actual structures were conducted to evaluate the progress of corrosion after rebar exposure. As a result, it was found that localized deterioration preceded the corrosion in the exposed rebar and that the expansion of the corrosion area was limited.</p>

Journal

  • Zairyo-to-Kankyo

    Zairyo-to-Kankyo 73 (2), 32-36, 2024-02-10

    Japan Society of Corrosion Engineering

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