塩害環境に20年その後中性化環境に15年暴露されたPCはり試験体の劣化性状について

DOI Web Site Web Site
  • 濵田 秀則
    九州大学大学院 工学研究院　社会基盤部門
  • Rita Irmawaty
    Faculty of Engineering, Universitas Hasanuddin（元九州大学大学院　工学府　博士後期課程）
  • 山本 大介
    大分工業高等専門学校　都市環境工学科
  • 佐川 康貴
    九州大学大学院 工学研究院　社会基盤部門

書誌事項

タイトル別名
  • Deterioration of Prestressed Concrete Beam Specimens Exposed under Chloride (20 years) and Carbonation (15 years) Environments
  • エンガイ カンキョウ ニ 20ネン ソノゴ チュウセイカ カンキョウ ニ 15ネン バクロ サレタ PCハリ シケンタイ ノ レッカ セイジョウ ニ ツイテ

この論文をさがす

説明

<p>It is well known that corrosion of steel reinforcement is one of the important factors affecting long-term durability of reinforced concrete (RC) and prestressed concrete (PC) structures. Corrosion usually occurs due to either carbonation or chloride attack. This has been well studied for RC, but not yet for PC. This experimental work is a case study on the long-term performance of prestressed concrete beam. Four prestressed concrete beam specimens including both post-tension type and pre-tension type (pre-cracked or without crack before the exposure) were tested. All beams have been exposed to the real marine environment at Sakata Port, Yamagata prefecture for 20 years, then transferred to the laboratory and stored in a constant temperature and sheltered from the rain for 15 years. Then they were transported to Kyushu University, Ito campus, and tested. Experimental test was addressed for corrosion state of prestressing wires / tendons and load bearing capacity of the beam specimens. This report presents the test results and discussion on durability of PC beam specimens.</p>

収録刊行物

  • 材料

    材料 73 (7), 569-575, 2024-07-15

    公益社団法人 日本材料学会

キーワード

詳細情報 詳細情報について

問題の指摘

ページトップへ