Recycling concrete rubbles with reactive aggregates from ASR-affected bridge pier

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Abstract

金沢大学理工研究域環境デザイン学系A large number of bridge piers on the Noto highway are now suffering from serious damages caused by alkali-silica reaction (ASR). The Kashima Bridge with a 2-span steel girder structure was constructed in 1978. However, in the inspection carried out in 2004, it was found that half of stirrup steel bars in the pillow beam fractured at the bending corner of steel bar due to the excessive ASR expansion of concrete. For this reason, the pillow beam of the Kashima Bridge was completely reconstructed by removing all the concrete in 2005. In the first part of the paper, the execution procedure of reconstruction of pillow beam and the strengthening of column in ASR-affected RC pier were introduced. In the second part of the paper, in order to recycle concrete rubbles from the Kashima Bridge, the possibility of recycled aggregates for residual ASR reactivity and its some countermeasures were also discussed. © 2008 Taylor & Francis Group.全文公開200909

Journal

  • Proceedings of the 4th International Structural Engineering and Construction Conference, ISEC-4 - Innovations in Structural Engineering and Construction

    Proceedings of the 4th International Structural Engineering and Construction Conference, ISEC-4 - Innovations in Structural Engineering and Construction (1), 605-611, 2008-09-01

    Taylor & Francis

Codes

  • NII Article ID (NAID)
    120006655902
  • Text Lang
    ENG
  • Article Type
    conference paper
  • Data Source
    IR 
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