Modeling Bond Behavior of Lap-Spliced Enamel-Coated Rebar
Publication: Journal of Materials in Civil Engineering
Volume 31, Issue 9
Abstract
Bond behavior of coated rebar spliced in concrete has gained significant attention due to the modified interfacial behavior between the coated surface and cementitious materials. This paper proposes an analytical model to describe the bond behavior of enamel-coated rebar spliced in concrete beams. This model considers the strain-softening behavior of concrete in the stress transfer mechanism between spliced rebar and concrete. The local bond strength caused by rebar characteristics and the effect of enamel coating was considered through the unified local bond model. The coupled stress bursting pressure generated by the splice was analyzed using equivalent stress analysis. The proposed model was validated by comparison with the experimental results of 24 concrete beams reinforced with both uncoated and coated rebar. The proposed theoretical analysis and model provide an efficient analytical approach of translating local bond behavior of coated reinforcement to the global bond behavior of lap splices in RC beams. The results indicated a significant coating effect on the load-strain responses of lap splices under tension forces.
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Acknowledgments
Financial support for this study was provided in part by the National Science Foundation under Award No. CMMI-0900159 and by the Department of Civil, Architectural, and Environmental Engineering at Missouri University of Science and Technology.
References
Cairns, J., and K. Jones. 1995. “Influence of rib geometry on strength of lapped joints: An experimental and analytical study.” Mag. Concr. Res. 47 (172): 253–262. https://doi.org/10.1680/macr.1995.47.172.253.
Calderon-Uriszar-Aldaca, I., E. Briz, P. Larrinaga, and H. Garcia. 2018. “Bonding strength of stainless steel rebars in concretes exposed to marine environments.” Constr. Build. Mater. 172 (30): 125–133. https://doi.org/10.1016/j.conbuildmat.2018.03.156.
Canbay, E., and R. J. Frosch. 2005. “Bond strength of lap-spliced bars.” ACI Struct. J. 102 (4): 605–614.
CEB-FIP (Comité européen du béton-The Fédération Internationale de la Précontrainte). 2000. Bond of reinforcement in concrete. Lausanne, Switzerland: CEB-FIP.
Chamberlin, S. J. 1956. “Spacing of reinforcement in beams.” ACI J. Proc. 53 (1): 113–134.
Choi, O. C., H. Hadje-Ghaffari, D. Darwin, and S. L. McCabe. 1991. “Bond of epoxy-coated reinforcement: Bar diameters.” ACI Mater. 8 (2): 207–217.
Choi, O. C., and W. S. Lee. 2002. “Interfacial bond analysis of deformed bars to concrete.” ACI Struct. J. 99 (6): 750–756.
Darwin, D., and E. K. Graham. 1993. “Effect of deformation height and spacing on bond strength of reinforcing bars.” ACI Struct. J. 90 (6): 646–657.
Darwin, D., S. L. McCabe, E. K. Idun, and S. P. Schoenekase. 1992. “Development length criteria: Bars not confined by transverse reinforcement.” ACI Struct. J. 89 (6): 709–720.
Esfahani, M. R., and M. R. Kianoush. 2005. “Development/splice length of reinforcing bars.” ACI Struct. J. 102 (1): 22.
Lackner, R., and H. A. Mang. 2003. “Scale transition in steel-concrete interaction. I: Model.” J. Eng. Mech. 129 (4): 393–402. https://doi.org/10.1061/(ASCE)0733-9399(2003)129:4(393).
Noghaba, K. 1995. “Splitting of concrete in the anchoring zone of deformed bars-a fracture mechanics approach to bond.” Ph.D. thesis, Dept. of Civil Engineering, Lulea Univ. of Technology.
Orangun, C. O., J. O. Jirsa, and J. E. Breen. 1977. “A reevaluation of test data on development length and splices.” ACI Struct. J. 74 (3): 114–122.
Reinhardt, H. W. 1992. “Bond of steel to strain-softening concrete taking account of loading rate.” In Proc., Int. Conf. on Fracture Mechanics of Concrete Structures (FRaMCoS1), edited by Z. Bazant, 80–820. London: Elsevier.
Rosati, G., and S. Cristiano. 1992. “Modeling of local bar-to-concrete bond in reinforced concrete beams.” In Vol. 3 of Proc., Int. Conf. on Bond in Concrete-From Research to Practice, edited by A. Skudra and T. Tepfers. Riga, Latvia: Riga Technical Univ.
Russo, G., M. Pauletta, and D. Mitri. 2009. “Solution for bond distribution in asymmetric RC structural members.” Eng. Struct. 31 (3): 633–641. https://doi.org/10.1016/j.engstruct.2008.11.003.
Tepfers, R. 1973. A theory of bond applied to overlapped tensile reinforcement splices for deformed bars, Publication No. 73:2, 328. Goteborg, Sweden: Division of Concrete Structures, Chalmers Univ. of Technology.
van der Veen, C. 1990. “Cryogenic bond stress-slip relationship.” Ph.D. thesis, Dept. of Civil Engineering, Delft Univ. of Technology.
Wang, H. 2009. “An analytical study of bond strength associated with splitting of concrete cover.” Eng. Struct. 31 (4): 968–975. https://doi.org/10.1016/j.engstruct.2008.12.008.
Wu, C., and G. Chen. 2015. “A unified model of local bond between deformed steel rebar and concrete: Indentation analogy theory and validation.” J. Eng. Mech. 141 (10): 04015038. https://doi.org/10.1061/(ASCE)EM.1943-7889.0000945.
Wu, C., G. Chen, J. S. Volz, R. Brow, and M. Koenigstein. 2012. “Local bond strength of vitreous enamel coated rebar to concrete.” Constr. Build. Mater. 35 (Oct): 428–439. https://doi.org/10.1016/j.conbuildmat.2012.04.067.
Wu, C., G. Chen, J. S. Volz, R. Brow, and M. Koenigstein. 2013. “Global bond strength of vitreous enamel coated rebar to concrete.” Constr. Build. Mater. 40 (Mar): 793–801. https://doi.org/10.1016/j.conbuildmat.2012.11.076.
Zuo, J., and D. Darwin. 2000. “Splice strength of conventional and high relative rib area bars in normal and high-strength concrete.” ACI Struct. J. 97 (4): 630–641.
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©2019 American Society of Civil Engineers.
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Received: May 22, 2018
Accepted: Mar 26, 2019
Published online: Jun 19, 2019
Published in print: Sep 1, 2019
Discussion open until: Nov 19, 2019
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