PSI - Issue 28
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Fig. 6. Load-deflection response for all specimen
5. Conclusion This study investigated the behavior and ductility of intermediate and end U-Wrapped anchored RC beams that were strengthened in flexure with galvanized steel mesh (GSM) sheets bonded with mortar. The following conclusions could be drawn: Flexural strengthening using GSM sheets increased the ultimate-load capacity of strengthened specimens by 41.8 to 51.4 %, when compared to the control un-strengthened specimen. No strength increase was observed, when comparing anchored strengthened specimens to non-anchored strengthened specimens. However, the ductility of end anchored specimens increased by 142.1 and 270% when compared to control and non-anchored specimens, respectively. The ductility of intermediate anchored specimens increased by 134.1 and 257.3 % when compared to control and non-anchored specimens respectively If properly anchored, GSM sheets bonded with mortar can enhance the strength and significantly improve the ductility of RC beams in flexure. References Abuodeh, O. R., Abdalla, J. A., & Hawileh, R. A. (2019). The flexural behavior of bolting and bonding Aluminum Alloy plates to RC beams. Procedia Structural Integrity , 17 , 395–402. https://doi.org/10.1016/j.prostr.2019.08.052 Aljaafreh, T., Beneberu, E., Ph, D., Yazdani, N., Ph, D., & Asce, F. (2017). Anchorage Effect on Flexural Fiber Reinforced Polymer ( FRP ) Laminate Strengthening of Lightweight Concrete Beams . 5 (2), 14–25. https://doi.org/10.15640/jea.v5n2a2 Ascione, F., Lamberti, M., Napoli, A., Razaqpur, G., & Realfonzo, R. (2017). An experimental investigation on the bond behavior of steel reinforced polymers on concrete substrate. Composite Structures , 181 , 58–72. https://doi.org/10.1016/j.compstruct.2017.08.063 Choobbor, S. S., Hawileh, R. A., Abu-Obeidah, A., & Abdalla, J. A. (2019). Performance of hybrid carbon and basalt FRP sheets in strengthening concrete beams in flexure. Composite Structures , 227 (August), 111337. https://doi.org/10.1016/j.compstruct.2019.111337 De Santis, S., de Felice, G., Napoli, A., & Realfonzo, R. (2016). Strengthening of structures with Steel Reinforced Polymers: A state-of-the-art review. Composites Part B: Engineering , 104 , 87–110. https://doi.org/10.1016/j.compositesb.2016.08.025 Douier, K. A., Hawileh, R., & Abdalla, J. A. (2019). Behavior of RC Beams externally strengthened with Mortar bonded Steel Mesh. 2019 Advances in Science and Engineering Technology International Conferences, ASET 2019 . https://doi.org/10.1109/ICASET.2019.8714227
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