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Home > Publications > International Concrete Abstracts Portal
The International Concrete Abstracts Portal is an ACI led collaboration with leading technical organizations from within the international concrete industry and offers the most comprehensive collection of published concrete abstracts.
Title: Behavior of Reinforced Concrete Columns Confined by New Steel-Jacketing Method
Author(s): Eunsoo Choi, Young-Soo Chung, Joonam Park, and Baik-Soon Cho
Publication: Structural Journal
Appears on pages(s): 654-662
Keywords: external pressure; grouting; reinforced concrete columns; seismic retrofit; steel jacket
Abstract:This paper introduces a new steel-jacketing method for reinforced concrete (RC) columns using external pressure. Experimental tests of concrete cylinders and RC columns are performed to assess the effectiveness of the proposed method. Single- and double-layered jackets are introduced. The newly jacketed cylinders show good results in terms of increasing the compressive strength and ductility compared to plain cylinders. The double-layered jackets are estimated to show equal performance to that of a single steel jacket having the same thickness as the double-layered jacket. Four columns are prepared and two of them are confined by steel jackets with external pressure; one is a single-layered jacket and the other is a double-layered jacket. The proposed steel-jacketing method increases the ductility of lap-spliced RC columns. The doublelayered jacketed column produces more ductile behavior than the single-layered jacketed column.
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