Rehabilitation of Reinforced Concrete Circular Columns with Sprayed-Glass Fiber–Reinforced Polymer Composites
Publication: Journal of Composites for Construction
Volume 23, Issue 6
Abstract
The seismic behavior of reinforced concrete (RC) circular columns rehabilitated with sprayed-glass fiber–reinforced polymer (GFRP) composites was investigated in this study. Six large-scale RC circular columns were constructed and tested under simultaneous reversed-cyclic lateral loads and a constant axial load. All columns had a diameter of 305 mm with 1,525-mm shear span and were deficient in lap-splice length at the footing-column joint. The six specimens were divided into two identical series. In each series, one specimen was rehabilitated after being fully damaged, one was rehabilitated after being partially damaged (up to 2.5% drift ratio), and one was strengthened without prior loading. The difference between the two series was the thickness of the sprayed-GFRP confinement: 3.0 and 6.0 mm. It was concluded that the 3-mm-thick sprayed GFRP was inadequate for rehabilitation of the fully damaged column; however, it can be used for the rehabilitation of undamaged and partially damaged columns. Sprayed GFRP of 6-mm thickness not only increased the drift capacity of the column but also significantly increased the lateral load capacity of seismically deficient RC circular columns.
Get full access to this article
View all available purchase options and get full access to this article.
Acknowledgments
The authors wish to express their gratitude and sincere appreciation for the financial support received from the University of Manitoba Graduate Fellowship (UMGF) and the Natural Science and Engineering Research Council of Canada (NSERC). Also, the help received from Dr. A. Parghi, Vector Corrosion Technologies, and the technical staff of McQuade Heavy Structures Laboratory of the University of Manitoba is acknowledged.
References
ACI (American Concrete Institute). 2005. Acceptance criteria for moment frames based on structural testing and commentary. ACI 374.1. Farmington Hills, MI: ACI.
Ali, M. A., and E. El-Salakawy. 2016. “Seismic performance of GFRP-reinforced concrete rectangular columns.” J. Compos. Concr. Constr. 20 (3): 04015074. https://doi.org/10.1061/(ASCE)CC.1943-5614.0000637.
ASTM. 2018. Standard test method for compressive strength of cylindrical concrete specimens. ASTM C39/C39M. West Conshohocken, PA: ASTM.
Banthia, N., and A. J. Boyd. 2000. “Sprayed fiber-reinforced polymers for repairs.” Can. J. Civ. Eng. 27 (5): 907–915. https://doi.org/10.1139/l00-027.
Banthia, N., N. Nandakumar, and A. Boyd. 2002. “Sprayed fiber-reinforced polymers: From laboratory to a real bridge.” ACI Concr. Int. 24 (11): 47–52.
Boyd, A. J. 2000. “Rehabilitation of reinforced concrete beams with sprayed glass fiber reinforced polymers.” Ph.D. thesis, Dept. of Civil Engineering, Univ. of British Columbia.
CSA (Canadian Standards Association). 2012. Design and construction of building structures with fiber-reinforced polymers. CSA S8062. Toronto: CSA.
CSA (Canadian Standards Association). 2014a. Design of concrete structures. CSA A23.3. Toronto: CSA.
CSA (Canadian Standards Association). 2014b. Canadian highway bridge design code. CSA S6. Toronto: CSA.
FHWA (Federal Highway Administration). 2017. National bridge inventory ASCII-2016. Washington, DC: FHWA.
Haroun, M. A., and M. H. Elsanadedy. 2005. “Fiber-reinforced plastic jackets for ductility enhancement of reinforced concrete bridge columns with poor lap-splice detailing.” J. Bridge Eng. 10 (6): 749–757. https://doi.org/10.1061/(ASCE)1084-0702(2005)10:6(749).
Harries, K. A., and S. C. Young. 2003. “Sprayed-fiber-reinforced composite materials for infrastructure rehabilitation.” Concr. Int. 25 (1): 47–51.
Lee, H. K., and L. R. Hausmann. 2004. “Structural repair and strengthening of damaged RC beams with sprayed FRP.” Compos. Struct. 63 (2): 201–209. https://doi.org/10.1016/S0263-8223(03)00156-9.
Lee, H. K., L. R. Hausmann, and W. C. Seaman. 2008. “Effectiveness of retrofitting damaged concrete beams with sprayed fiber-reinforced polymer coating.” J. Reinf. Plast. Compos. 27 (12): 1269–1286. https://doi.org/10.1177/0731684407087687.
Lee, K. S., B. Y. Lee, and S. Y. Seo. 2016. “A seismic strengthening technique for reinforced concrete columns using sprayed FRP.” Polymers 8 (4): 107–128. https://doi.org/10.3390/polym8040107.
Naqvi, S., and E. El-Salakawy. 2017. “Lap splice in GFRP-RC rectangular columns subjected to cyclic-reversed loads.” J. Compos. Constr. 21 (4): 04016117. https://doi.org/10.1061/(ASCE)CC.1943-5614.0000777.
NRC (National Research Council). 2015. National building code of Canada. NBC 2015. London: NRC.
Pan, A., and J. P. Moehle. 1989. “Lateral displacement ductility of reinforced concrete flat plates.” ACI Struct. J. 86 (3): 250–258.
Paulay, T., T. M. Zanza, and A. Scarpas. 1981. Vol. 81 of Lapped splices in bridge piers and in columns of earthquake resisting reinforced concrete frames. Christchurch, NZ: Univ. of Canterbury.
Peng, Y., Q. Gu, R. Gao, and G. Bitewlgn. 2014. “Experimental research on seismic behavior of seismically damaged RC frame column strengthened with sprayed hybrid BF/CFRP.” In Vol. 501–504 of Applied mechanics and materials, 1592–1599. Zurich, Switzerland: Trans Tech Publications.
Information & Authors
Information
Published In
Copyright
©2019 American Society of Civil Engineers.
History
Received: Sep 18, 2018
Accepted: Mar 15, 2019
Published online: Aug 28, 2019
Published in print: Dec 1, 2019
Discussion open until: Jan 28, 2020
Authors
Metrics & Citations
Metrics
Citations
Download citation
If you have the appropriate software installed, you can download article citation data to the citation manager of your choice. Simply select your manager software from the list below and click Download.