PSI - Issue 54

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Ahmed Selim et al. / Procedia Structural Integrity 54 (2024) 601–608 Selim et al./ Structural Integrity Procedia 00 (2019) 000 – 000

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Fig. 7. Front and bottom view for FE prediction for debonding failure for prism externally bonded with FRP laminate

4. Conclusions & recommendations Two 3D non-linear finite element models were developed to investigate the effect of grooving the FRP inside the concrete prism. The following conclusions are drawn from the results: 1. Since the percentage difference between the strengths of the two models was very minimal, around 6%, it was concluded that it is not practical to groove the FRP for low-strength concrete since loads corresponding to the crushing of concrete and FRP debonding are very close. Accordingly, it is advised to develop an experimental program and test the same prisms with higher concrete strength to check whether the results would match or not. 2. In addition, it is recommended to use actual material properties based on lab test results such as the cylinder compressive strength and FRP coupon tests. 3. Moreover, the FRP and epoxy shall be modeled separately instead of one composite material to observe whether this would affect the results. References Abuodeh, O., Alrifai, M., Hawileh, R. A., Abdalla, J. A., & 9th International Conference on Modeling, Simulation and Applied Optimization Manama, B. A. A. (2019). Finite Element Modelling of Aluminum Alloy Plated Beams. In 2019 8th International Conference on Modeling Simulation and Applied Optimization (ICMSAO) (pp. 1 - 5). IEEE. AlKady, A. (2021). ABAQUS Tutorial: Defining materials in ABAQUS. United Kingdom: YouTube. Aram, M. R., Czaderski, C., & Motavalli, M. (2008). Debonding failure modes of flexural FRP - strengthened RC beams. Composites Part B: Engineering, 39(5), 826 - 841. doi: https://doi.org/10.1016/j.compositesb.2007.10.006. Attari, N., Amziane, S., & Chemrouk, M. (2012). Flexural strengthening of concrete beams using CFRP, GFRP and hybrid FRP sheets. Construction and Building Materials, 37, 746 - 757. doi: 10.1016/j.conbuildmat.2012.07.052. Babaeidarabad, S., Loreto, G., & Nanni, A. (2014). Flexural Strengthening of RC Beams with an Externally Bonded Fabric - Reinforced Cementitious Matrix. Journal of Composites for Construction, 18(5), 04014009. doi: 10.1061/(ASCE)CC.1943 - 5614.0000473. Bournas, D. A., Pavese, A., & Tizani, W. (2015). Tensile capacity of FRP anchors in connecting FRP and TRM sheets to concrete. Engineering Structures, 82, 72 - 81. doi: 10.1016/j.engstruct.2014.10.031. Cogswell, F. N. (1992). Thermoplastic aromatic polymer composites: A study of the structure, processing, and properties of carbon fiber reinforced polyetheretherketone and related materials. Oxford, Butterworth - Heinemann. Retrieved from https://www.sciencedirect.com/science/book/9780750610865. Gonzalez - Libreros, J. H., Sneed, L. H., D'Antino, T., & Pellegrino, C. (2017). Behavior of RC beams strengthened in shear with FRP and FRCM composites. Engineering Structures, 150, 830 - 842. doi: 10.1016/j.engstruct.2017.07.084. Guo, R., Hu, W., Li, M., & Wang, B. (2020). Study on the flexural strengthening effect of RC beams reinforced by FRP grid with PCM shotcrete. Composite Structures, 239, 112000. doi: https://doi.org/10.1016/j.compstruct.2020.112000. Hawileh, R. A., Abdalla, J. A., Tanarslan, M. H., & Naser, M. Z. (2011). Modeling of nonlinear cyclic response of shear - deficient RC T - beams strengthened with side bonded CFRP fabric strips. Computers & Concrete, 8(3), 193 - 206. Hawileh, R. A., H. H. Mhanna, A. Al Rashed, J. A. Abdalla, & Naser, M. Z. (2022). Flexural behavior of RC beams externally bonded with polyethylene terephthalate (PET) fiber reinforced polymer (FRP) laminates. Engineering Structures, 256, 114036. doi: https://doi.org/10.1016/j.engstruct.2022.114036. Nayak, A. N., Kumari, A., & Swain, R. B. (2018). Strengthening of RC Beams Using Externally Bonded Fiber Reinforced Polymer Composites. Structures, 14, 137 - 152. doi: https://doi.org/10.1016/j.istruc.2018.03.004. Panahi, M., Zareei, S. A., & Izadi, A. (2021). Flexural strengthening of reinforced concrete beams through externally bonded FRP sheets and near surface mounted FRP bars. Case Studies in Construction Materials, 15. doi: 10.1016/j.cscm.2021.e00601. Abuodeh, O. R., Hawileh, R. A., & Abdalla, J. A. (2021). Nonlinear finite element models of reinforced concrete beams strengthened in bending with mechanically fastened aluminum alloy plates. Computers & Structures, 253, 106573.