Application of Middle-performance Concrete for Construction of Tunnel Lining

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  • Yanagimori Y.
    飛島建設（株） 土木事業本部 土木技術部 トンネル技術G
  • Douzono J.
    西日本高速道路（株） 九州支社 福岡工事事務所 苅田工事区
  • Hirama A.
    飛島建設（株） 土木事業本部 土木技術部 設計G
  • Tsutsui T.
    飛島建設（株） 西日本土木支社九州土木事業部 新津トンネル作業所

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Other Title
  • トンネル二次覆工への中流動コンクリートの適用
  • トンネル 2ジフクコウ エ ノ チュウリュウドウ コンクリート ノ テキヨウ

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Description

Several problems are often found in the construction of tunnel lining, such as reduction in concrete density due to improper compaction at the tunnel crown, lower concrete strength at construction joints, and void at the back of lining due to insufficient filling. In order to address these problems, the expressway companies in Japan have regulated “Mountain Tunneling Construction Management Guidance (for tunnel lining by means of middle-performance concrete)” in August 2008. Applications of middle-performance concrete for construction of tunnel lining could be expected not only to improve the concrete quality but also the workability, on the other hand solving the future problem of manpower shortage as consequence of aging population. Owing to these merits, the number of similar applications is anticipated to increase in the near future. This paper discusses the knowledge and problems pertaining to the middle-performance concrete through a series of trials, i.e. laboratory tests, field tests using a large mock form and in-situ application on the Aratsu Tunnel at the Higashi-Kyushu Expressway.

Journal

  • Concrete Journal

    Concrete Journal 49 (6), 6_11-6_17, 2011

    Japan Concrete Institute

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