Abstract
This paper presents an overview of various shear strengthening techniques used to enhance the shear capacity of RC beams. The conventional strengthening schemes increase the cross-sectional area and dead load. Whereas the use of FRP strengthening enhances the shear resistance capacity without increasing the dead load. There are various parameters such as type of FRP, wrapping methodology, polymer properties, orientation of fibres, thickness of FRP, inclination of FRP and anchorage has influence on the efficiency of FRP strengthening. The use of FRP strengthening increases the concrete shear capacity and stirrups shear capacity by acting as an external confinement. There are many empirical relations had been proposed to estimate the contribution of FRP in shear resistance. This article summarizes the various FRP shear strengthening schemes, influence of different parameters discussed above and also presents an overview of different models in estimating the shear capacity of FRP strengthened RC beams.
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References
Hu, Z., Zhou, X., Guo, M., Huang, X., & Hu, B. (2020). Enhancing the Performance of CFRP Shear-strengthened RC Beams Using “Ductile” Anchoring Devices. Frontiers in Materials, 7, 292. https://doi.org/10.3389/fmats.2020.00292
Khalifa, A., & Nanni, A. (2002). Rehabilitation of rectangular simply supported RC beams with shear deficiencies using CFRP composites. Construction and building materials, 16(3), 135–146. https://doi.org/10.1016/S0950-0618(02)00002-8
Leung, C. K., Chen, Z., Lee, S., Ng, M., Xu, M., & Tang, J. (2007). Effect of size on the failure of geometrically similar concrete beams strengthened in shear with FRP strips. Journal of Composites for Construction, 11(5), 487–496. https://doi.org/10.1061/(ASCE)1090-0268(2007)11:5(487)
Li, W., & Leung, C. K. (2017). Effect of shear span-depth ratio on mechanical performance of RC beams strengthened in shear with U-wrapping FRP strips. Composite Structures, 177, 141–157. https://doi.org/10.1016/j.compstruct.2017.06.059
Beber, A., & Campos Filho, A. (2005). CFRP composites on the shear strengthening of reinforced concrete beams. Rev IBRACON Estruturas, 1.
Triantafillou, T. C. (1998). Shear strengthening of reinforced concrete beams using epoxy-bonded FRP composites. ACI structural journal, 95, 107–115.
Karzad, A. S., Leblouba, M., Al Toubat, S., & Maalej, M. (2019). Repair and strengthening of shear-deficient reinforced concrete beams using Carbon Fiber Reinforced Polymer. Composite Structures, 223, 110963. https://doi.org/10.1016/j.compstruct.2019.110963
Diagana, C., Li, A., Gedalia, B., & Delmas, Y. (2003). Shear strengthening effectiveness with CFF strips. Engineering Structures, 25(4), 507–516. https://doi.org/10.1016/S0141-0296(02)00208-0
Abdulqader, S., Makki, R., & Mousa, M. (2019). Behavior of SCC beams strengthened with CFRP under shear. Kufa Journal of Engineering, 10(1), 111–126.
Baggio, D., Soudki, K., & Noel, M. (2014). Strengthening of shear critical RC beams with various FRP systems. Construction and Building Materials, 66, 634–644. https://doi.org/10.1016/j.conbuildmat.2014.05.097
American Concrete Institute ACI. (2017). Guide for the design and construction of externally bonded FRP systems for strengthening concrete structures, ACI Committee 440, Detroit.
American Concrete Institute ACI. (2019). Building Code Requirements for Structural Concrete, ACI Committee 318, Detroit.
Acknowledgement
The authors greatfully acknowledge the support of JNTUA College of Engineering and CSIR-Central Building Research Institute.
Notations
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∅ is strength reduction factor
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Vc is nominal shear strength provided by concrete (kN/N)
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Vs is nominal shear strength provided by steel stirrups (kN/N)
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Vf is shear contribution of FRP (kN/N)
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Ѱf is FRP strength reduction factor
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ffe is effective stress in the FRP attained at section failure (MPa/GPa)
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α is fibre orientation angle (deg)
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εfe is effective strain in FRP reinforcement
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εfu is design rupture strain of FRP reinforcement
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k1 and k2 are the modification factors applied to kv
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Le is the active bond length of FRP Laminate (mm/cm/m)
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Satyanarayana, K.V., Ajitha, B. (2022). Review on Shear Strengthened RC Rectangular Beams with FRP Composites. In: Kanwar, V.S., Sharma, S.K., Prakasam, C. (eds) Proceedings of International Conference on Innovative Technologies for Clean and Sustainable Development (ICITCSD – 2021). Springer, Cham. https://doi.org/10.1007/978-3-030-93936-6_60
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DOI: https://doi.org/10.1007/978-3-030-93936-6_60
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