DEVELOPMENT AND APPLICATION OF SULFURIC ACID-RESISTANT CONCRETE AIMING TO MAINTENANCE-FREE SEWAGE FACILITIES

DOI
  • MIYAHARA Shigeyoshi
    大成建設株式会社技術センター 社会基盤技術研究部
  • OWAKI Eiji
    大成建設株式会社技術センター 社会基盤技術研究部
  • FUJINO Yutaka
    宇部興産株式会社 建設資材カンパニー 技術開発研究所
  • ITO Tomoaki
    宇部興産株式会社 建設資材カンパニー 技術開発研究所

Bibliographic Information

Other Title
  • 下水道施設のメンテナンスフリーを目指した耐硫酸コンクリートの開発と展開

Abstract

<p> Concrete structures of sewage facilities have begun to exceed its standard service life of 50 years, and it is expected that the demands for renovation will increase in the future. In addition, concrete in the facilities often suffers from severe corrosion due to sulfuric acid produced by microorganisms and needs early repairs. In order to continue sewage services under the limited condition of financial sources and personnel, sulfuric acid-resistant concrete, which dramatically increases resistance to sulfuric acid and contributes to maintenance-free and longer service life, is effective. Sulfuric acid-resistant concrete that decreases corrosion rate to 1/10 or less of ordinary concrete, has been developed. Construction techniques and design method are also developed to optimize its quality, and we started application. This concrete is expected to contribute to the reduction of burden related to personnel and financial sources by making the concrete structures maintenance-free and extending service life.</p>

Journal

Keywords

Details 詳細情報について

  • CRID
    1390854717590133632
  • DOI
    10.11532/jsceim.1.1_180
  • ISSN
    2436777X
  • Text Lang
    ja
  • Data Source
    • JaLC
  • Abstract License Flag
    Allowed

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