MICRO-CRACKING AROUND DEFORMED RINFORCING BAR IN ULTRA HIGH-STRENGTH REINFORCED CONCRETE MEMBERS

• MARUYAMA Ippei

  Dept. of Environmental Engineering and Architecture, Nagoya Univ.

• SATO Ryoichi

  Dept. of Social and Environmental System, Hiroshima Univ.

Bibliographic Information

Other Title

• 超高強度コンクリートを用いたRC部材中の鉄筋近傍における微細ひび割れの発見
• チョウコウキョウド コンクリート オ モチイタ RC ブザイチュウ ノ テッキン キンボウ ニ オケル ビサイ ヒビワレ ノ ハッケン

Abstract

In this research, Several different ultra-high-strength concretes with water to binder ratio of 0.15 were developed and experimental results of basic physical data, self-induced stress of concrete with different restraint ratio and existence of crack around rebar due to autogenous shrinkage are reported. The major experimental results are: 1) The cracks around deformed reinforcing bar due to volume change of concrete experimentally confirmed, 2) Drying shrinkage of ultra-high-strength concrete affects restraint stress of concrete even it is believed to be close, 3) it is possible to add chemical pre-stress of the ultra-high strength concrete with belite-rich cement, expansive additive and reducing shrinkage admixture.

Journal

• Journal of Structural and Construction Engineering (Transactions of AIJ)

  Journal of Structural and Construction Engineering (Transactions of AIJ) 72 (617), 1-7, 2007

  Architectural Institute of Japan

Keywords

• Ultra high-strength concrete
• Autogenous shrinkage
• Self-induced stress
• Micro-crack

Details

• CRID: 1390001205670946048
• NII Article ID: 110006317787
• NII Book ID: AN10438559
• DOI: 10.3130/aijs.72.1_7
• ISSN: 18818153
• ISSN: 13404202
• ISSN: http://id.crossref.org/issn/13404202
• NDL BIB ID: 8882647
• Web Site: http://id.ndl.go.jp/bib/8882647
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I8882647
• Web Site: https://www.jstage.jst.go.jp/article/aijs/72/617/72_KJ00004621777/_pdf
• Text Lang: ja
• Data Source:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
  • KAKEN
• Abstract License Flag: Disallowed