Investigation of stress-strain models for confined high strength concrete

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Husem M., Pul S.

SADHANA-ACADEMY PROCEEDINGS IN ENGINEERING SCIENCES, vol.32, no.3, pp.243-252, 2007 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 32 Issue: 3
  • Publication Date: 2007
  • Doi Number: 10.1007/s12046-007-0021-y
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.243-252
  • Keywords: high strength concrete, confined concrete, stress-strain models, ductility toughness, COLUMNS, DUCTILITY, BEHAVIOR, COMPRESSION
  • Karadeniz Technical University Affiliated: Yes


The effects of confinement reinforcement on the behaviour of high strength concrete columns are investigated for which prismatic experimental specimens were prepared. In the experiment specimens, four longitude reinforcement and confinement reinforcement were used. For each experiment, stress-strain relationship of concrete was obtained and compared with models proposed earlier. The results show that confinement reinforcement improved the ductility of high strength concrete. The ascending branch of stress-strain curves depended on the ratio of confinement reinforcement was similar to the modified Kent-Park model and the descending branch similar to the Nagashima model.