Effective Repair for Corrosion Control Using FRP Wraps
Publication: Journal of Composites for Construction
Volume 14, Issue 4
Abstract
This paper presents results from a multiyear study to evaluate the role of prewrap substrate preparation on corrosion mitigation in a marine environment. Seventeen one-third scale prestressed piles were corroded to 20% metal loss to simulate severe corrosion. Subsequently, two types of prewrap substrate preparation were carried out: (1) full repair in which the delaminated concrete was removed and the section reformed and (2) epoxy injection repair in which the cracks were sealed and the surface cleaned. Specimens were then wrapped using carbon fiber-reinforced polymer (CFRP) and exposed to simulated tidal cycles at for 28 months. The postexposure wrap performance was evaluated from gravimetric testing in which the metal loss in all specimens was measured. Results showed that the performance of the full repair and the epoxy injection were comparable with relatively minor increased steel loss despite the severity of the exposure. In contrast, the steel in unwrapped controls exposed to the same environment was totally corroded in several regions. The findings provide compelling evidence that epoxy sealing of cracks followed by FRP wrapping is effective even when corrosion damage is severe.
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Acknowledgments
This study was performed in cooperation and funding from the State of Florida and U.S. Department of Transportation. This support is gratefully acknowledged. The assistance and guidance of Mr. Jose Garcia and Mr. Steve Womble from the FDOT is gratefully acknowledged. The writers thank SDR Engineering, Tallahassee for their contribution.
References
Aguilar, J., Winters, D., Sen, R., Mullins, G., and Stokes, M. (2009). “Improvement in FRP-concrete bond by external pressure.” Transp. Res. Rec., 2131, 145–154.
Andrade, C., Alonso, C., and Sarria, J. (2002). “Corrosion rate evolution in concrete structures exposed to the atmosphere.” Cem. Concr. Compos., 24, 55–64.
ASTM. (1994). “Standard practice for preparing, cleaning and evaluating corrosion test specimens.” G1-90, West Conshohocken, Pa.
Bazinet, S., Cereone, L., and Worth, F. (2003). “Composite FRP moves into underwater repair applications.” SAMPE J., 39(3), 8–16.
Emmons, P. (1993). Concrete repair and maintenance illustrated, R S Means, Kingston, Mass.
Grosvenor, A., Kobe, B., and McIntyre, N. (2005). “Activation energies for the oxidation of iron by oxygen gas and water vapour.” Surf. Sci., 574, 317–321.
Harichandran, R., and Baiyasi, M. (2000). “Repair of corrosion-damaged columns using FRP wraps.” Research Rep. No. RC-1386, Michigan State Univ., East Lansing, Mich.
Kessler, R., Powers, R., and Lasa, I. (2006). “Case studies of impressed current cathodic protection systems for marine reinforced concrete structures in Florida.” Paper No. 06330, Corrosion NACE 2006.
Minser, A., Schongar, G., and O’Connor, J. (2002). “Multi-year study to evaluate FRP wrapping of deteriorated concrete columns.” Structural materials technology V, Technomic Publishing Company, Inc., Atlantic City, N.J., 234–239.
Mullins, G., Sen, R., Suh, K., and Winters, D. (2005). “Underwater FRP repair of prestressed piles in the Allen Creek Bridge.” J. Compos. Constr., 9(2), 136–146.
Mullins, G., Sen, R., Torres-Acosta, A., Goulish, A., Suh, K., Pai, N., and Mehrani, A. (2001). “Load capacity of corroded pile bents.” Final Rep. Submitted to the Florida Dept. of Transportation.
Pantazopoulou, S., Bonacci, J., Sheikh, S., Thomas, M., and Hearn, N. (2001). “Repair of corrosion-damaged columns with FRP wraps.” J. Compos. Constr., 5(1), 3–11.
Sen, R. (2003). “Advances in the application of FRP for repairing corrosion damage.” Prog. Struct. Eng. Mater., 5(2), 99–113.
Suh, K. (2006). “Underwater FRP repair of corrosion damaged prestressed piles.” Ph.D. dissertation, Dept. of Civil and Environmental Engineering, Univ. of South Florida, Tampa.
Suh, K., Mullins, G., Sen, R., and Winters, D. (2007). “Effectiveness of FRP in reducing corrosion in a marine environment.” ACI Struct. J., 104(1), 76–83.
Suh, K. S., Sen, R., Mullins, G., and Winters, D. (2008). “Corrosion monitoring of FRP repaired piles in tidal waters.” ACI J., 252, 137–156.
Watson, R. J. (2003). “The use of composites in the rehabilitation of civil engineering structures.” Field applications of FRP reinforcement: Case studies, ACI SP-215, S. Rizkalla and A. Nanni, eds., ACI, Farmington Hills, Mich., 291–302.
Winters, D., Mullins, G., Sen, R., Schrader, A., and Stokes, M. (2008). “Bond enhancement for FRP pile repair in tidal waters.” J. Compos. Constr., 12(3), 334–343.
Wootton, I., Spainhour, L., and Yazdani, N. (2003). “Corrosion of steel reinforcement in CFRP wrapped concrete cylinders.” J. Compos. Constr., 7(4), 339–347.
World Almanac. (2008). World almanac and book of facts, World Almanac Books, New York, 289.
Information & Authors
Information
Published In
Journal of Composites for Construction
Volume 14 • Issue 4 • August 2010
Pages: 388 - 396
Copyright
© 2010 ASCE.
History
Received: Jun 30, 2009
Accepted: Nov 14, 2009
Published online: Jul 15, 2010
Published in print: Aug 2010
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