Confinement of Reinforced Concrete Columns With Welded Wire Fabric

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Title: Confinement of Reinforced Concrete Columns With Welded Wire Fabric

Author(s): Salim R. RazviI and Murat Saatcioglu

Publication: Structural Journal

Volume: 86

Issue: 5

Appears on pages(s): 615-623

Keywords: columns (supports); confined concrete; earthquake resistant structures; reinforced concrete; reinforcing steels; structural design; tests; welded wire fabric; Design

Date: 9/1/1989

Abstract:
The behavior of reinforced concrete columns confined with welded-wire fabric was investigated. Thirty-four small-scale specimens with different reinforcement arrangements, including four corner bars as longitudinal reinforcement and various combinations of welded-wire fabric and tie steel as lateral reinforcement, were tested under concentric loading. The results indicate that welded-wire fabric can be effective in confining the core concrete, resulting in significant improvements in strength and ductility of columns. This improvement, which is achieved with a relatively small percentage of steel, is equivalent to that achieved with closely spaced tie and longitudinal reinforcement with a considerably larger steel percentage. Although some practical problems remain, welded-wire fabric can potentially be used in earthquake-resistant structures as confinement reinforcement.