Behavior of damaged concrete columns repaired with novel FRP jacket

Mohammed, Ali A. and Manalo, Allan C. and Maranan, Ginghis B. and Zhuge, Yan and Vijay, P. V. and Pettigrew, John (2019) Behavior of damaged concrete columns repaired with novel FRP jacket. Journal of Composites for Construction, 23 (3 - Article 04019013). ISSN 1090-0268

Abstract

Jacketing using prefabricated fiber reinforced polymer (FRP) composite shells is an attractive repair system for deteriorating structures exposed to the marine environment. However, most available techniques lack an effective joining system capable of providing structural continuity along the hoop direction. This paper addresses the evaluation of the efficiency of a FRP jacket with an innovative joining system and the behavior of damaged concrete columns repaired with jackets considering several parameters, that is, level of steel corrosion, level of concrete cover damage, and the shape effect. The results showed that the jacket restored the load-carrying capacity by 99% and 95% for columns with 25% and 50% corrosion damage, respectively. Moreover, the jacket effectively restored the axial load capacity of columns with 50% and 100% concrete cover damage by 95% and 82%, respectively. The proposed system was more effective in circular columns because the axial load capacity of the repaired columns was 43% higher than the square columns. A theoretical analysis of the axial load capacity of the repaired columns indicated an excellent agreement with the experimental results.


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Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Additional Information: Permanent restricted access to Published version, in accordance with the copyright policy of the publisher.
Faculty/School / Institute/Centre: Current - Faculty of Health, Engineering and Sciences - School of Civil Engineering and Surveying (1 July 2013 -)
Faculty/School / Institute/Centre: Current - Institute for Advanced Engineering and Space Sciences - Centre for Future Materials (1 Jan 2017 -)
Date Deposited: 16 Jan 2020 02:57
Last Modified: 07 Feb 2020 01:58
Uncontrolled Keywords: damaged concrete columns, FRP joint, novel pile repair system, prefabricated FRP composite jacket
Fields of Research : 09 Engineering > 0905 Civil Engineering > 090506 Structural Engineering
URI: http://eprints.usq.edu.au/id/eprint/37464

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