Journal
ADVANCES IN STRUCTURAL ENGINEERING
Volume 16, Issue 4, Pages 593-603Publisher
MULTI-SCIENCE PUBL CO LTD
DOI: 10.1260/1369-4332.16.4.593
Keywords
axial load; confinement; FRP; reinforced concrete; strengthening; wall-like columns
Funding
- NSF Industry/University Cooperative Research Center for Integration of Composites into Infrastructure (CICI) at the University of Miami
- REte dei Laboratori Universitari di Ingegneria Sismica (RELUIS) at the University of Naples Federico II
- Directorate For Engineering
- Div Of Industrial Innovation & Partnersh [0933537] Funding Source: National Science Foundation
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This paper discusses the laboratory testing of wall-like reinforced concrete (RC) columns externally confined with glass fiber reinforced polymer (GFRP) laminates and subjected to pure axial load. Specimens were characterized by an overall length of 3.05 m (10 ft), cross-sectional dimensions of 356 by 1,041 mm (14 by 41 in). Three specimens were tested: one was unstrengthened (benchmark) and two were confined with GFRP laminates. Two different confining reinforcement ratios were considered. The experimental investigation aimed at characterizing: the confinement contribution in terms of axial strength and prevention of instability of longitudinal bars, and the sensitivity of any enhancement in performance to the confining reinforcement ratio. The experimental axial stress - axial strain curves are also discussed.
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