Effect of Fiber-Reinforced Polymer Wraps on Corrosion Activity and Concrete Cracking in Chloride-Contaminated Concrete Cylinders
Publication: Journal of Composites for Construction
Volume 10, Issue 2
Abstract
This paper presents the results of an experimental study designed to investigate the effect of fiber-reinforced polymer (FRP) wraps on corrosion activity and concrete cracking in chloride-contaminated concrete cylinders. Thirty-five concrete cylinders, each having diameter and height, concentrically reinforced with one steel reinforcing bar, were subjected to accelerated corrosion exposure for . Test parameters included level of applied potential, presence of FRP wraps, and bar diameter. The corresponding current and concrete expansion were continuously monitored throughout the corrosion exposure. At the end of the test, the steel bars were extracted, cleaned of rust, and weighed to determine the actual steel mass loss. The results showed that, for the same applied fixed potential, FRP wraps effectively reduced the corresponding current, the concrete expansion, and the steel mass loss. For the same applied potential, the current density increased as the bar diameter decreased. For the same corrosion depth, the circumferential expansion of the cylinder caused by corrosion decreased as the concrete cover-to-bar diameter ratio increased.
Get full access to this article
View all available purchase options and get full access to this article.
Acknowledgments
This work is supported in part by research funding from the Network of Centers of Excellence ISIS Canada on Intelligent Sensing for Innovative Structures, the Natural Sciences and Engineering Research Council (NSERC), and Sika Canada through donation of CFRP composites. Their contributions are greatly appreciated. The writers wish to thank undergraduate research assistant Saagar Prajapati and graduate student Rania Al-Hammoud for their help throughout the experimental work.
References
American Concrete Institute (ACI). (2002). “Corrosion of metals in concrete.” ACI manual of concrete practice, Detroit.
Andrade, C., Alonso, C., and Molina, F. J. (1993). “Cover cracking as a function of bar corrosion. Part I: Experimental test.” Mater. Struct., 26, 453–464.
ASTM. (2002). “Standard practice for preparing, cleaning, and evaluating corrosion test specimens.” ASTM G1-90, West Conshohocken, Pa.
Auyeung, Y., Balaguru, P., and Chung, L. (2000). “Bond behavior of corroded reinforcement bars.” ACI Mater. J., 97(2), 214–220.
Bazant, Z. P. (1979). “Physical model for steel corrosion in concrete sea structures—Applications.” ACI Journal of Structural Division, 1155–1165.
Bentur, S., Diamond, S., and Berke, N. S. (1997). Steel corrosion in concrete: Fundamentals and civil engineering practice, E & FN Spon, London.
Berver, E., Fowler, D., Jirsa, J., and Wheat, H. (2001). “Corrosion in FRP-wrapped concrete members.” Proc., Int. Conf. on Structural Faults and Repair (CD-Rom), M. C. Ford, ed., Engineering Technics, London.
Bonacci, J. (2000). “Rehabilitation of corrosion-damaged RC infrastructure using externally-bonded FRP.” Proc., 3rd Int. Conf. on Advanced Composite Materials in Bridges and Structures, Canadian Society for Civil Engineering, Ottawa, 679–686.
Bonacci, J., et al. (1998). “Laboratory simulation of corrosion in reinforced concrete and repair with CFRP wraps.” Proc., Annual Conf., Canadian Society of Civil Engineering, Ottawa, 653–662.
Broomfield, J. P. (1997). Corrosion of steel in concrete, understanding, investigation, and repair, E & FN Spon, London.
Cabrera, J. G. (1996). “Deterioration of concrete due to steel reinforcement corrosion.” Cem. Concr. Res., 18, 47–59.
Comité Euro-International du Béton (CEB). (1992). Durable concrete structures—Design guide, Thomas Telford, London.
Debaiky, A., Green, M., and Hope, B. (2002). “Carbon fiber-reinforced polymer wraps for corrosion control and rehabilitation of reinforced concrete columns.” ACI Mater. J., 99(2), 129–137.
Hearn, N., and Aiello, J. (1998). “Effect of mechanical restraint on the rate of corrosion in concrete.” Can. J. Civ. Eng., 24, 81–88.
ISIS Canada Design. (2001). “Strengthening reinforced concrete structures with externally-bonded fibre reinforced polymers.” Manual No. 4, ISIS Canada Corporation, Winnipeg, Canada.
Lee, C., et al. (2000). “Accelerated corrosion and repair of reinforced concrete columns using fibre reinforced polymer sheets.” Can. J. Civ. Eng., 27(5), 941–948.
Mangat, P. S., and Elgarf, M. S. (1999). “Flexural strength of concrete beams with corroding reinforcement.” ACI Struct. J., 96(1), 149–158.
Masoud, S. G. (2002). “Behaviour of corroded reinforced concrete beams repaired with FRP sheets under monotonic and fatigue loads.” Ph.D. thesis, Univ. of Waterloo, Waterloo, Canada.
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.
Rodriguez, J., Ortega, L. M., Casal, J., and Diez, J. M. (1996). “Assessing structural conditions of concrete structures with corroded reinforcement.” Concrete repair, rehabilitation, and protection, R. K. Dhir and M. R. Jones, eds., E&FN Spon, London, 65–78.
Tepfers, R. (1979). “Cracking of concrete cover along anchored deformed reinforcing bars.” Mag. Concrete Res., 31(106), 3–12.
Thomas, J., and Kline, T. (1996). “Strengthening concrete with carbon fiber reinforcement.” Concrete Repair Digest, 88–92.
Tuutti, K. (1980). “Service life of structures with regard to corrosion of embedded steel.” Performance of concrete in marine environment, American Concrete Institute, Detroit, 223–236.
West, J. (1999). “Durability design of post-tensioned bridge substructures.” Ph.D. thesis, Univ. of Texas at Austin, Austin, Tex.
Weyers, R. E. (1998). “Service life model for concrete structures in chloride laden environments.” ACI Mater. J., 95(4), 445–453.
Wootton, I., Spainhour, L., and Yazdani, N. (2003). “Corrosion of steel reinforcement in carbon fiber-reinforced polymer wrapped concrete cylinders.” J. Compos. Constr., 7(4), 339–347.
Yoon, S., Wang, K., Weiss, W., and Shah, S. (2000). “Interaction between loading, corrosion, and serviceability of reinforced concrete.” ACI Mater. J., 97(6), 637–644.
Information & Authors
Information
Published In
Copyright
© 2006 ASCE.
History
Received: Aug 26, 2004
Accepted: Jun 21, 2005
Published online: Apr 1, 2006
Published in print: Apr 2006
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.