Bond Behavior of Corroded Steel Reinforcement in Concrete Wrapped with Carbon Fiber Reinforced Polymer Sheets
Publication: Journal of Materials in Civil Engineering
Volume 15, Issue 4
Abstract
This paper examines the ability of carbon fiber reinforced polymer (CFRP) wrapping to enhance the bond of corroded reinforcing steel bars in concrete. Thirty-two bond pullout specimens were considered. Test variables included the clear concrete cover (15, 30, and 60 mm or 0.6, 1.2, and 2.4 in.), degree of corrosion (0, 1, 5, 7, and 10% mass loss), and presence or absence of transverse CFRP wrapping. The specimens consisted of a concrete prism measuring with a No. 10 M reinforcing bar placed in the corner of the prism. The specimens were constructed with 3% by weight of cement premixed in the concrete to depassify the tensile reinforcing steel. The specimens were placed in a constant high-humidity environment, and corrosion was induced by means of an impressed current. Following corrosion, the specimens were tested by bar pullout to determine the bond strength versus slip of the reinforcing bars. The bond strength of the reinforcing bars in the concrete prisms increased at a small level of corrosion, but decreased as the degree of corrosion increased. The failure mode typically was bond splitting in unwrapped specimens. Strengthened specimens exhibited an increased bond strength and failure by bar pullout due to the confining effects of the CFRP strengthening.
Get full access to this article
View all available purchase options and get full access to this article.
References
Almusallam, A. A., Al-Gahtani, A. S., Aziz, A. R., and Aziz, A. R.(1996). “Effect of reinforcement corrosion on bond strength.” Constr. Build. Mat., 10(2), 123–129.
Al-Sulaimani, G. J., Kaleemullah, M., Basunbul, I. A., and Basunbul, I. A.(1990). “Influence of corrosion and cracking on bond behaviour and strength of reinforced concrete members.” ACI Struct. J., 87(2), 220–231.
American Concrete Institute (ACI). (1996a). “Corrosion of metals in concrete,” ACI 222R-96, Committee 222, Detroit.
American Concrete Institute (ACI). (1996b). “State of the art report on fiber reinforced plastic reinforcement for concrete structures,” ACI 440R-96, Committee 440, Detroit.
Debaiky, A., Green, M., and Hope, B. (2001). “Corrosion evaluation in CFRP wrapped RC cylinders.” Structural Faults and Repair Conf.
Dolan, C., Rizkalla, S., and Nanni, A. (1999). ACI-SP-188 on Fiber Reinforced Polymer Reinforcement for Concrete, American Concrete Institute, Baltimore, Md.
El-Maaddawy, T., and Soudki, K. A.(2003). “Effectiveness of impressed current technique to simulate corrosion of steel reinforcement in concrete.” J. Mater. Civ. Eng., 15(1), 41–47.
Kono, S., Inazumi, M., and Kaku, T. (1998). “Evaluation of confining effects of CFRP sheets on reinforced concrete members.” Proc., 2nd Int. Conf. on Composites in Infrastructure, 343–355.
Lee, C., et al. (2000). “Accelerated corrosion and repair of reinforced concrete columns using carbon fibre reinforced polymer sheets,” Can. J. Civ. Eng., 27(5), 941–948.
Masoud, S., Soudki, K. A., and Topper, T.(2001). “CFRP-strengthened and corroded RC beams under monotonic and fatigue loads.” J. Compos. Constr., 5(4), 228–236.
Sherwood, E. G., and Soudki, K. A.(2000). “Rehabilitation of corrosion damaged concrete beams with CFRP laminates—Pilot study.” Composites, Part B, 31(1), 453–459.
Soudki, K. A., and Sherwood, T.(2000). “Behaviour of reinforced concrete beams strengthened with CFRP laminates subjected to corrosion damage.” Can. J. Civ. Eng., 27(5), 1005–1010.
Information & Authors
Information
Published In
Copyright
Copyright © 2003 American Society of Civil Engineers.
History
Received: Dec 20, 2000
Accepted: Jul 15, 2002
Published online: Jul 15, 2003
Published in print: Aug 2003
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.