Prediction of Shear Contribution for the FRP Strengthening Systems in RC Beams: A Simple Bonding-based Approach
Source abstract
Abstract
This paper introduces a novel and simple model for estimation of the shear contribution of the fiber-reinforced polymer (FRP) strengthening system in the FRP-strengthened beams. The model utilizes the bonding-based approach, which considers the shear resisting mechanism of FRP-strengthened beam via the bond behavior between FRP strengthening system and concrete. Herein, the beams strengthened in shear with near-surface mounting (NSM) rods or laminates and embedded through-section (ETS) bars are examined. By utilizing only mechanical consideration, the shear resistances of the NSM-strengthening or ETS-strengthening laminates or bars in the beams are simply derived when several bond factors (i.e. maximum bond stress and slip at peak bond stress) are known without using any empirical coefficients. The reliability of the proposed model is first validated against the test results available in the open literature. The extensive investigation to complement the model validation is then carried out through comparison of the results produced by the experiments and the proposed approach as well as the existing methods. The analyses demonstrate that the bonding-based approach is greatly effective to predict the shear contribution of the FRP strengthening system in the beam. Two examples for calculation of the shear resisting forces of the ETS-FRP and NSM-FRP bars in the FRP-strengthened beams are provided to depict the use of the model.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Structural Behavior of Reinforced Concrete · Concrete Corrosion and Durability · Structural Load-Bearing Analysis
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Faculty of Civil Engineering, Industrial University of Ho Chi Minh City, 12 Nguyen Van Bao, Ward 4, Go Vap District, Ho Chi Minh City 700000, Vietnam.
Innovative Construction Materials Research Unit, Department of Civil Engineering, Chulalongkorn University, 254 Phayathai Road, Pathumwan, Bangkok 10330, Thailand.
References (30)
Show source-provided references
1. 1) ACI, (2015). “ACI 440.1R-15: Guide for the design and construction of structural concrete reinforced with FRP bars.” Farmington Hills, Michigan USA: American Concrete Institute.
2. 2) Breveglieri, M., Aprile, A. and Barros, J. A. O., (2014). “Shear strengthening of reinforced concrete beams strengthened using embedded through-section steel bars.” Engineering Structures, 81, 76-87.10.1016/j.engstruct.2014.09.026 ↗
3. 3) Breveglieri, M., Aprile, A. and Barros, J. A. O., (2015). “Embedded through-section shear strengthening technique using steel and CFRP bars in RC beams of different percentage of existing stirrups.” Composite Structures, 126, 101-113.10.1016/j.compstruct.2015.02.025 ↗
4. 4) Breveglieri, M., Aprile, A. and Barros, J. A. O., (2016). “RC beams strengthened in shear using the embedded through-section technique: Experimental results and analytical formulation.” Composites Part B: Engineering, 89, 266-281.10.1016/j.compositesb.2015.11.023 ↗
5. 5) Bui, L. V. H., Stimannaithum, B. and Ueda, T., (2017). “Mechanical performance of concrete beams strengthened by embedded-through section bars.” In: Proc. 30th KHTCNN Symposium on Civil Engineering, Taipei, Taiwan 2-4 November 2017.
6. 6) Bui, L. V. H., Stimannaithum, B. and Ueda, T., (2018a). “Bond behavior between embedded through-section bars and concrete.” International Journal on Advanced Science, Engineering and Information Technology, 8(4), 1008-1014.10.18517/ijaseit.8.4.5850 ↗
7. 7) Bui, L. V. H., Stimannaithum, B. and Ueda, T., (2018b). “Bond response of embedded through section GFRP bars to concrete.” In: Proc. 20th JSCE International Summer Symposium, Hokkaido, Japan 29-30 August 2018. Tokyo: Japan Society of Civil Engineers.
8. 8) Bui, L. V. H., Stimannaithum, B. and Jongvivatsakul, P., (2020a). “Comprehensive investigation on bond mechanism of embedded through-section fiber-reinforced polymer bars to concrete for structural analysis.” Journal of Building Engineering, 29, 101180.10.1016/j.jobe.2020.101180 ↗
9. 9) Bui, L. V. H., Stimannaithum, B. and Ueda, T., (2020b). “Experimental investigation of concrete beams strengthened in shear with embedded through-section steel and FRP bars.” Journal of Composites for Construction, 24(5), 1-14.10.1061/(ASCE)CC.1943-5614.0001055 ↗
10. 10) Bui, L. V. H., Stimannaithum, B. and Ueda, T., (2020c). “Simulation of concrete beams strengthened by embedded through-section steel and GFRP bars with newly developed bond model.” Journal of Advanced Concrete Technology, 18(7), 364-385.10.3151/jact.18.364 ↗
11. 11) Caro, M., Jemaa, Y., Dirar, S. and Quinn, A., (2017). “Bond performance of deep embedment FRP bars epoxy-bonded into concrete.” Engineering Structures, 147, 448-457.10.1016/j.engstruct.2017.05.069 ↗
12. 12) Chaallal, O., Mofidi, A., Benmokrane, B. and Neale, K., (2011). “Embedded through-section FRP rod method for shear strengthening of RC beams: Performance and comparison with existing techniques.” Journal of Composites for Construction, 15(3), 374-383.10.1061/(ASCE)CC.1943-5614.0000174 ↗
13. 13) Coelho, M. R. F., Sena-Cruz, J. M. and Neves, L. A. C., (2015). “A review on the bond behavior of FRP NSM systems in concrete.” Construction and Building Materials, 93, 1157-1169.10.1016/j.conbuildmat.2015.05.010 ↗
14. 14) Cosenza, E., Manfredi, G. and Realfonzo, R., (1997). “Behavior and modeling of the bond of FRP rebars to concrete.” Journal of Composites for Construction, 1, 40-51.10.1061/(ASCE)1090-0268(1997)1:2(40) ↗
15. 15) Dai, J. G., Sato, Y. and Ueda, T., (2005). “Development of the nonlinear bond stress-slip model of fiber reinforced plastics sheet-concrete interfaces with a simple method.” Journal of Composites for Construction, 9(1), 52-62.10.1061/(ASCE)1090-0268(2005)9:1(52) ↗
16. 16) Dai, J. G., Sato, Y. and Ueda, T., (2006). “Unified analytical approaches for determining shear bond characteristics of FRP-concrete interfaces through pullout tests.” Journal of Advanced Concrete Technology, 4(1), 133-145.10.3151/jact.4.133 ↗
17. 17) Dias, S. J. E. and Barros, J. A. O., (2008). “Shear strengthening of t cross section reinforced concrete beams by near-surface mounted technique.” Journal of Composites for Construction, 12(3), 374-383.10.1061/(ASCE)1090-0268(2008)12:3(300) ↗
18. 18) Dias, S. J. E. and Barros, J. A. O., (2013). “Shear strengthening of RC beams with NSM CFRP laminates: Experimental research and analytical formulation.” Composite Structures, 99, 477-490.10.1016/j.compstruct.2012.09.026 ↗
19. 19) Godat, A., L’Hady, A., Chaallal, O. and Neale, K., (2012). “Bond behavior of the ETS FRP bar shear-strengthening method.” Journal of Composites for Construction, 16, 529-539.10.1061/(ASCE)CC.1943-5614.0000280 ↗
20. 20) Harajli, M. and Abouniaj, M., (2010). “Bond performance of GFRP bars in tension: Experimental evaluation and assessment of ACI 440 guidelines.” Journal of Composites for Construction, 14(6), 659-668.10.1061/(ASCE)CC.1943-5614.0000139 ↗
21. 21) JSCE, (1997). “Concrete Engineering Series, No. 23: Recommendations for design and construction of concrete structures using continuous fiber reinforcing materials.” Tokyo: Japan Society of Civil Engineers.
22. 22) Kamiharako, A., Shimomura, T. and Maruyama, K., (2001). “Evaluation method for shear capacity of RC member retrofitted with externally-bonded continuous fiber sheet.” Concrete Library of JSCE, 37, 147-160.
23. 23) Lorenzis, L. D., Rizzo, A. and Tegola, A. L., (2002). “A modified pull-out test for bond of near-surface mounted FRP rods in concrete.” Composites Part B: Engineering, 33(8), 589-603.10.1016/S1359-8368(02)00052-5 ↗
24. 24) Lorenzis, L. D. and Nanni, A., (2002). “Bond between near-surface mounted fiber-reinforced polymer rods and concrete in structural strengthening.” ACI Structural Journal, 99(2), 123-132.
25. 25) Mofidi, O. C., Brahim, B. and Kenneth, N., (2012). “Experimental tests and design model for RC beams strengthened in shear using the embedded through-section FRP method.” Journal of Composites for Construction, 16(5), 540-550.10.1061/(ASCE)CC.1943-5614.0000292 ↗
26. 26) Nakaba, K., Kanakubo, T., Furuto, T. and Yoshihawa, H., (2011). “Bond behavior between fiber-reinforced polymer laminates and concrete.” ACI Structural Journal, 98(3), 1-9.
27. 27) Sato, Y., Ueda, T. and Kakuta, Y., (1994). “Quantitative evaluation of shear resisting behavior of concrete beams reinforced with FRP rods by finite element analysis.” Concrete Library International, 24, 193-209.
28. 28) Soliman, S. M., El-Salakawy, E. and Benmokrane, B., (2011). “Bond performance of near-surface-mounted FRP bars.” Journal of Composites for Construction, 15(1), 103-111.10.1061/(ASCE)CC.1943-5614.0000150 ↗
29. 29) Teng, J. G., De Lorenzis, L., Wang, B., Li, R., Wong, T. N. and Lam, L., (2006). “Debonding failures of RC beams strengthened with near surface mounted CFRP strips.” Journal of Composites for Construction, 10(2), 92-105.10.1061/(ASCE)1090-0268(2006)10:2(92) ↗
30. 30) Zou, X., Sneed, L. H., D’Antino, T. and Carloni, C., (2019). “Analytical bond-slip model for fiber-reinforced cementitious matrix-concrete joints based on strain measurements.” Journal of Materials in Civil Engineering, 31(11), 1-11.10.1061/(ASCE)MT.1943-5533.0002855 ↗