Characterization of FRP Rods as Near-Surface Mounted Reinforcement
Publication: Journal of Composites for Construction
Volume 5, Issue 2
Abstract
The use of near surface mounted (NSM) fiber-reinforced polymer (FRP) rods is a promising technology for increasing flexural and shear strength of deficient reinforced concrete (RC) members. As this technology emerges, the structural behavior of RC elements strengthened with NSM FRP rods needs to be fully characterized. Given the variability of material properties and groove geometry, this requires that the tensile properties of the FRP rod and the mechanics of load transfer between NSM FRP rods and concrete be investigated. Tensile and bond tests on commercially available carbon FRP deformed rods for application as NSM reinforcement were carried out using test methods that are expected to become standards in North America. Three full-size beams, one control beam and two beams strengthened in shear with NSM FRP rods, were tested. Test results are presented and compared with the predictions of a simple design approach, showing reasonable agreement.
Get full access to this article
View all available purchase options and get full access to this article.
References
1.
ACI Committee 318. ( 1995). Building code requirements for structural concrete (ACI 318-95) and commentary (ACI 318R-95), American Concrete Institute, Detroit.
2.
Benmokrane, B., et al. ( 1998). Standard test methods for FRP rod and sheet, Intelligent Sensing for Innovative Structures (ISIS)–Canada, University of Manitoba, Winnipeg, Canada.
3.
Cosenza, E., Manfredi, G., and Realfonzo, R. (1997). “Behavior and modeling of bond of FRP rebars to concrete.”J. Compos. for Constr., ASCE, 1(2), 40–51.
4.
De Lorenzis, L. ( 2000). “Strengthening of RC structures with near surface mounted FRP rods.” MS thesis, Dept. of Civ. Engrg., The University of Missouri–Rolla, Rolla, Mo.
5.
Dye, W. K., Bakis, C. E., and Nanni, A. ( 1998). “Accelerated testing of carbon FRP tendon-anchor systems for post-stressed concrete applications.” Proc., 1st Int. Conf. on Durability of Compos. for Constr., B. Benmokrane and H. Rahman, eds., Sherbrooke, Canada, 463–473.
6.
Eligehausen, R., Popov, E. P., and Bertero, V. V. ( 1983). “Local bond stress-slip relationships of deformed bars under generalized excitations.” Rep. No. 83/23, University of California, Berkeley, Calif.
7.
Japan Society of Civil Engineers (JSCE). ( 1997). “Recommendation for design and construction of concrete structures using continuous fiber reinforcing materials.” Concrete Engrg. Series No. 23, Tokyo.
8.
Khalifa, A., Gold, W. J., Nanni, A., and Abdel Aziz, M. I. (1998). “Contribution of externally bonded FRP to shear capacity of RC flexural members.”J. Compos. for Constr., ASCE, 2(4), 195–202.
9.
MacGregor, J. C. ( 1997). Reinforced concrete mechanics and design, 3rd Ed., Prentice-Hall, Upper Saddle River, N.J.
10.
Marshall Industries Composites. ( 1998). C-Bar;ot reinforcing rods for concrete reinforcement, Jacksonville, Fla.
11.
Master Builders, Inc. ( 1996). Concresive paste LPL technical data, Cleveland.
12.
Miller, B. ( 1999). “Bond between carbon fiber reinforced polymer sheets and concrete.” MS thesis, Dept. of Civ. Engrg., The University of Missouri–Rolla, Rolla, Mo.
13.
Nanni, A., Alkhrdaji, T., Barker, M., Chen, G., Mayo, R., and Yang, X. ( 1999). Overview of testing to failure program of a highway bridge strengthened with FRP composites, FRPRCS-4, Baltimore.
14.
Nanni, A., Bakis, C. E., and Boothby, T. E. ( 1995). “Test methods for FRP concrete systems subjected to mechanical loads state-of-the-art review.” J. Reinforced Plastics and Compos., 14(6), 524–558.
15.
Onoda Corporation. ( 1999). Bristar technical data, Tokyo.
16.
Yan, X., Miller, B., Nanni, A., and Bakis, C. E. ( 1999). “Characterization of CFRP bars used as near-surface mounted reinforcement.” Proc., 8th Int. Struct. Faults and Repair Conf., M. C. Forde, ed., Engineering Technics Press, Edinburgh, CD-ROM version.
Information & Authors
Information
Published In
Journal of Composites for Construction
Volume 5 • Issue 2 • May 2001
Pages: 114 - 121
History
Received: Aug 30, 1999
Published online: May 1, 2001
Published in print: May 2001
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.