The Effect of Jacket Area on The Behaviour of Repaired/Strengthened Reinforced Concrete Columns

Abstract

Jacketing is the most popular method for strengthening reinforced concrete columns under axial loading. This repair and strengthening technique is widely used not only in Türkiye but also in other technologically developed countries. In this study, the effectiveness of this method is investigated experimentally, by testing two test parameters which are column section geometry and jacket thickness. The specimens were enlarged on all four sides to understand how the thickness of the jacket layer affects the behavior of the column. Using the experimental data, load versus deformation curves were plotted for each test specimen. The parameters (strength, rigidity, ductility, and energy dissipation capacity) that determine the behaviour of the reinforced column were then analyzed. At the end of this study, the effects of column section geometry and jacket thickness on the jacketing method are discussed, providing valuable preliminary data for future experimental studies.

Keywords

• Strengthening
• Repair
• Jacketing
• Axial load
• Reinforced concrete
• Column

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