ASRにより劣化したコンクリート橋脚の補修・補強工法による抑制効果  [in Japanese] ASR Mitigation-effect of Repair and Retrofitting Methods against ASR Damaged Reinforced Concrete Columns  [in Japanese]

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Abstract

我が国でASRにより損傷を受けた構造物が確認されて以来, 各種のASR抑制対策が確立されたが, その効果は十分に検証されたわけではない。最近では, ASR膨張が原因と考えられる鉄筋破断までも確認されている。著者らは, 長年にわたりASR損傷橋脚に対する補修・補強工法のASR抑制効果に関する一連の調査・研究を行ってきた。本報告は, ASR対策工法として樹脂塗装工法, 鋼板巻き立て工法, PC鋼材巻き立て工法に注目し, 大型RC試験体の長期暴露試験, 実橋脚での補強後の追跡調査に基づき, 各工法のASR抑制効果, 特徴, 今後の課題などを考察したものである。

In Japan, it became a great matter that a lot of RC columns have been suffering from the serious damage due to ASR. Although some countermeasures were established about 15 years ago, they could not always mitigate ASH completely. Recently, it was founded that reinforcing bars in ASH-damaged concrete structures were also failured. The authors carried out the series of study on ASR mitigation-effect and strengthing-effect of repair and retrofitting methods. The longterm exposure test using real-size specimens and inspection of retrofitted real columns was performed. This paper described their ASH. mitigation-effect.

Journal

  • Concrete Journal

    Concrete Journal 43(7), 42-50, 2005-07-01

    Japan Concrete Institute

References:  12

Cited by:  3

Codes

  • NII Article ID (NAID)
    10014349669
  • NII NACSIS-CAT ID (NCID)
    AN00094169
  • Text Lang
    JPN
  • Article Type
    Journal Article
  • ISSN
    03871061
  • NDL Article ID
    7412244
  • NDL Source Classification
    ZN1(科学技術--建設工学・建設業)
  • NDL Call No.
    Z16-89
  • Data Source
    CJP  CJPref  NDL  IR  J-STAGE 
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