Establishment of Evaluation System for Concrete Repair Materials Suitable for Subway Tunnels

  • Taguchi M.
    東京地下鉄(株) 工務部土木課
  • Ogura N.
    (株)CORE技術研究所 技術部
  • Ueda H.
    (財)鉄道総合技術研究所 材料技術研究部
  • Kishi T.
    国立大学法人東京大学 生産技術研究所

Bibliographic Information

Other Title
  • 地下鉄トンネルに適したコンクリート補修材料の評価システムの構築
  • チカテツ トンネル ニ テキシタ コンクリート ホシュウ ザイリョウ ノ ヒョウカ システム ノ コウチク

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Description

<p>The soundness of box type tunnels is maintained by ongoing repair of water leakage, flaking as such issues occur. However, the methods defined as standard methods by Tokyo Metro Co., Ltd. had not been updated in many years, and new materials that had become available in intervening years were not introduced. Further, instances of re-degradation of some repaired locations occurred. Therefore, to enable the selection of repair methods suitable for box type tunnels such as water cutoff work and cross-section repair work, and a method for the evaluation of repair methods considering the degradation level of the concrete base material was developed after the required performance and evaluation items were defined. In addition, an operation flow for introducing the method into actual construction work was established. These innovations have made possible the rapid introduction of new technologies.</p>

Journal

  • Concrete Journal

    Concrete Journal 58 (8), 589-596, 2020

    Japan Concrete Institute

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