Effect of Small Concrete Cover on the Fatigue Behavior of GFRP Bars and Concrete Bond
Publication: Journal of Composites for Construction
Volume 23, Issue 2
Abstract
The paper deals with the influence of cyclic loading on the bond between glass-fiber-reinforced polymer (GFRP) bars and concrete. The experimental study considers eccentric and centric pullout tests that vary by three different parameters: (1) concrete cover; (2) concrete strength; and (3) maximum load applied during cyclic loading. The results showed that the fatigue life of the bond between the considered GFRP rebars and concrete, with a small cover and low concrete quality, is limited by the occurrence of splitting failure. As the cover increases, the fatigue failure mode becomes a combination of splitting and bar pullout. The mechanical properties of concrete have a positive effect on fatigue life.
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Acknowledgments
The research was supported by the Marie Curie Initial Training Networks—“endure” European Network for Durable Reinforcement and Rehabilitation Solutions, Project No. 607851. The authors are very grateful to Schöck Bauteile GmbH for supplying the GFRP rebars.
References
ACI (American Concrete Institute). 2004. Guide test methods for fiber-reinforced polymers (FRPs) for reinforcing or strengthening concrete structures. ACI 440.3R. Farmington Hills, MI: ACI.
ACI (American Concrete Institute). 2015. Guide for the design and construction of structural concrete reinforced with FRP bars. ACI 440.1R. Farmington Hills, MI: ACI.
Adimi, R. M., H. A. Rahman, and B. Benmokrane. 2000. “New method for testing fiber-reinforced polymer rods under fatigue.” J. Compos. Constr. 4 (4): 206–213. https://doi.org/10.1061/(ASCE)1090-0268(2000)4:4(206).
Aiello, M. A., F. Focacci, and A. Nanni. 2001. “Effects of thermal loads on concrete cover of fiber-reinforced polymer reinforced elements: Theoretical and experimental analysis.” ACI Mater. J. 98 (4): 332–339. https://doi.org/10.14359/10402.
Alves, J., A. El-Ragaby, and E. El-Salakawy. 2011. “Durability of GFRP bars’ bond to concrete under different loading and environmental conditions.” J. Compos. Constr. 15 (3): 249–262. https://doi.org/10.1061/(ASCE)CC.1943-5614.0000161.
Bakis, C. E., S. U. Al-Dulaijan, A. Nanni, T. E. Boothby, and M. M. Al-Zahrani. 1998. “Effect of cyclic loading on bond behavior of GFRP rods embedded in concrete beams.” J. Compos. Tech. Res. 20 (1): 29–37. https://doi.org/10.1520/CTR10498J.
Balazs, G. L. 1992. “Fatigue of bond.” ACI Mater. J. 88 (6): 620–630. https://doi.org/10.14359/1200.
Bellakehal, H., A. Zaidi, R. Masmoudi, and M. Bouhicha. 2013. “Combined effect of sustained load and freeze-thaw cycles on one-way concrete slabs reinforced with glass fibre-reinforced polymer.” Can. J. Civ. Eng. 40 (11): 1060–1067. https://doi.org/10.1139/cjce-2012-0514.
Carvelli, V., A. Jain, and S. Lomov. 2017. Fatigue of textile and short fiber reinforced composites. Hoboken, NJ: Wiley.
CEB (Comité Euro-International du Béton). 1988. Fatigue of concrete structures. CEB Bulletin 188. Lausanne, Switzerland: CEB.
CEN (European Committee for Standardization). 2004. EN 1992-1-1, Eurocode 2: Design of concrete structures. Part 1-1: General rules and rules for buildings. Eurocode 2. CEN/TC250. Brussels, Belgium: CEN.
Ceroni, F., E. Cosenza, G. Manfredi, and M. Pecce. 2006. “Durability issues of FRP rebars in reinforced concrete members.” Cem. Concr. Compos. 28 (10): 857–868. https://doi.org/10.1016/j.cemconcomp.2006.07.004.
fib. 2000. Bond of reinforcement in concrete. fib Task Group Bond Models. Lausanne, Switzerland: fib (International Federation for Structural Concrete)/Sprint-Druck.
fib. 2013. Model code for concrete structures 2010. fib Special Activity Group 5. Berlin: Wiley Ernst & Sohn.
Gagel, A., B. Fiedler, and K. Schulte. 2006. “On modelling the mechanical degradation of fatigue loaded glass-fibre non-crimp fabric reinforced epoxy laminates.” Compos. Sci. Technol. 66 (5): 657–664. https://doi.org/10.1016/j.compscitech.2005.07.037.
GangaRao, H. V. S., N. Taly, and P. V. Vijay. 2007. Reinforced concrete design with FRP composites. Boca Raton, FL: CRC Press.
Gentry, T., and M. Husain. 1999. “Thermal compatibility of concrete and composite reinforcements.” J. Compos. Constr. 3 (2): 82–86. https://doi.org/10.1061/(ASCE)1090-0268(1999)3:2(82).
GOM. 2017. GOM Correlate software. Braunschweig, Germany: GOM Precise Industrial 3D Metrology.
Gylltoft, K., K. Cederwall, and L. Elfgren. 1979. “Fatigue strength of reinforced concrete structures.” Nord. Betong 6: 1–6.
Hao, Q., Y. Wang, Z. He, and J. Ou. 2009. “Bond strength of glass fiber reinforced polymer ribbed rebars in normal strength concrete.” Constr. Build. Mater. 23 (2): 865–871. https://doi.org/10.1016/j.conbuildmat.2008.04.011.
JSCE (Japan Society of Civil Engineers). 1995. Test method for tensile fatigue of continuous fibre reinforcing materials. JSCE-E 535. Tokyo: JSCE.
Katz, A. 2000. “Bond to concrete of FRP rebars after cyclic loading.” J. Compos. Constr. 4 (3): 137–144. https://doi.org/10.1061/(ASCE)1090-0268(2000)4:3(137).
Lee, J.-Y., C.-K. Yi, and Y.-G. Cheong. 2009. “Experimental study on the FRP-concrete bond behaviour under repeated loadings.” Mech. Compos. Mater. 45 (6): 609–618. https://doi.org/10.1007/s11029-010-9117-2.
Noël, M., and K. Soudki. 2014. “Fatigue behavior of GFRP reinforcing bars in air and in concrete.” J. Compos. Constr. 18 (5): 04014006. https://doi.org/10.1061/(ASCE)CC.1943-5614.0000468.
Rahman, A. H., M. R. Adimi, and B. Benmokrane. 1996. Fatigue behaviour of FRP reinforcements encased in concrete, 691–698. Montréal: Canadian Society for Civil Engineering.
Rezazadeh, M., and V. Carvelli. 2018. “A damage model for high-cycle fatigue behavior of bond between FRP bar and concrete.” Int. J. Fatigue 111: 101–111. https://doi.org/10.1016/j.ijfatigue.2018.02.012.
RILEM (The International Union of Testing and Research Laboratories for Materials and Structures). 1994. “RC6—Bond test for reinforcement steel. 2. Pull-out test.” In RILEM recommendations for the testing and use of constructions materials, 218–220. London: E & FN Spon.
Schöck Bauteile. 2013. Schöck ComBAR® technical information. Baden-Baden, Germany: Schöck Bauteile.
Shield, C., C. French, and A. Retika. 1997. “Thermal and mechanical fatigue effects on GFRP rebar–concrete bond.” In Vol. 2 of Proc., 3rd Int. Symp. of Non-Metallic (FRP) Reinforcement for Concrete Structures (FRPRCS-3), 381–388. Tokyo: Japan Concrete Institute.
Sutton, M., J. Orteu, and H. Shreir. 2009. Image correlation for shape, motion and deformation measurements: Basic concepts, theory and applications. New York: Springer.
Veljkovic, A., V. Carvelli, M. Haffke, and M. Pahn. 2017. “Concrete cover effect on the bond of GFRP bar and concrete under static loading.” Composites, Part B 124: 40–53. https://doi.org/10.1016/j.compositesb.2017.05.054.
Wang, H., and A. Belarbi. 2010. “Static and fatigue bond characteristics of FRP rebars embedded in fiber-reinforced concrete.” J. Compos. Mater. 44 (13): 1605–1622. https://doi.org/10.1177/0021998309355845.
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©2018 American Society of Civil Engineers.
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Received: Oct 26, 2017
Accepted: Aug 21, 2018
Published online: Dec 28, 2018
Published in print: Apr 1, 2019
Discussion open until: May 28, 2019
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