Experimental study of non-circular concrete elements actively confined with shape memory alloy wires

Qiwen Chen, Moochul Shin, Bassem Andrawes

Research output: Contribution to journalArticlepeer-review

Abstract

This study focuses on developing a novel scheme for applying external active confinement to non-circular concrete elements that lack ductility using shape memory alloys (SMAs). A total of 13 concrete elements (prisms) are tested under monotonic and cyclic uniaxial compression load. The compressive stress-strain relationships of the SMA confined concrete elements are examined and compared with the behaviors of elements confined with conventional glass fiber reinforced polymer (GFRP) jackets. The results clearly show a significant improvement in the ultimate strain and residual (post-peak) strength of concrete elements actively confined with SMA compared to that of GFRP confined elements.

Original languageEnglish (US)
Pages (from-to)303-311
Number of pages9
JournalConstruction and Building Materials
Volume61
DOIs
StatePublished - Jun 30 2014

Keywords

  • Active confinement
  • Concrete
  • Ductility
  • Recovery stress
  • Shape memory alloys

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Building and Construction
  • Materials Science(all)

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