ON THE STRESS RELAXATION OF CONCRETE IN EARLY AGES AND ITS ESTIMATION METHOD

• MORIMOTO Hiroaki

  THE JAPAN SOCIETY OF CIVIL ENGINEERS

• HIRATA Masanari

  THE JAPAN SOCIETY OF CIVIL ENGINEERS

• KOYANAGI Wataru

  THE JAPAN SOCIETY OF CIVIL ENGINEERS

Bibliographic Information

Other Title

• 若材令コンクリートのリラクセーション特性とその評価法に関する研究
• ジャクザイレイ コンクリート ノ リラクセーション トクセイ ト ソノ ヒョウ

Abstract

Stress relaxation of concrete, especialy in early ages, is one of an important property for thermal stress analysis in concrete structure. But, the information on the relaxation is very small because of an experimental difficulty in maintaining a specimen at a constant deformation. This paper describes the results of compression and tension relaxation tests on concrete in early ages. Test were performed by electro-hydraulic closed-loop testing machine system for compression and by loading frame with high rigidity for tention. Based on the test results, the influences of the age of loading and stress level upon the compression and tension relaxations are fully discussed and estimating equations for the relaxations at various ages are proposed.

Journal

• Doboku Gakkai Ronbunshu

  Doboku Gakkai Ronbunshu 1988 (396), 59-68, 1988-08-20

  Japan Society of Civil Engineers

Keywords

• concrete
• stress relaxation
• tensile stress
• compressive stress
• age

Details

• CRID: 1390001205603112960
• NII Article ID: 40004506022
• NII Article ID: 130003980843
• NII Article ID: 10004100032
• NII Book ID: AN10014020
• DOI: 10.2208/jscej.1988.396_59
• ISSN: 18827187
• ISSN: 02897806
• NDL BIB ID: 3192052
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I3192052
• Web Site: https://www.jstage.jst.go.jp/article/jscej1984/1988/396/1988_396_59/_pdf
• Data Source:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
• Abstract License Flag: Disallowed