Abstract
In the last two decades, the use of fiber-reinforced polymer (FRP) bars is of great interest to reinforce concrete beam structures due to its high specific strength, effective corrosion resistance, and low cost fabrication. Therefore, the flexural performance of these reinforced concrete beams containing FRP bars has been investigated by researchers for years with great interest. According to these investigations, one of the major problems is weak bonding strength between these bars and concrete material. Since, this major problem causes low flexural capacity, high deflection, and high crack widths for the reinforced concrete beams. Hence, the use of FRP bars by engineers does not sufficiently become widespread and also the engineering applications of these useful materials are still limited today. In this study, it is aimed to present an applicable solution regarding the bonding failures of the FRP bars in structurally reinforced concrete beams. For this solution, reinforced concrete beam samples were produced by using FRP materials on which knotted structures were formed. Then these samples were tested under 3-point bending tests. Furthermore, smooth-surfaced FRP bars and traditional deformed steel rebars were also used as reinforcing materials in the concrete beam samples for the comparison of the flexural capacities of each sample in order to investigate the effects of the reinforcing materials on the bonding strength. To conclude, the knotted FRP bars provide a significant contribution on the flexural capacity due to the increase of the bonding strength between the reinforcing material and the concrete in the beams.
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Achillides Z, Pilakoutas K (2004) Bond behavior of fiber reinforced polymer bars under direct pullout conditions. J Compos Constr 8(2):173–181
Antonietta Aiello M, Leone M, Pecce M (2007) Bond performances of FRP rebars-reinforced concrete. J Mater Civ Eng 19(3):205–213
Baena M, Torres L, Turon A, Barris C (2009) Experimental study of bond behaviour between concrete and FRP bars using a pull-out test. Compos B Eng 40(8):784–797
Davalos JF, Chen Y, Ray I (2008) Effect of FRP bar degradation on interface bond with high strength concrete. Cement Concr Compos 30(8):722–730
Hao Q, Wang Y, He Z, Ou J (2009) Bond strength of glass fiber reinforced polymer ribbed rebars in normal strength concrete. Constr Build Mater 23(2):865–871
Katz A (1999) Bond mechanism of FRP rebars to concrete. Mater Struct 32(10):761–768
Lin X, Zhang YX (2013) Bond–slip behaviour of FRP-reinforced concrete beams. Constr Build Mater 44:110–117
Tighiouart B, Benmokrane B, Gao D (1998) Investigation of bond in concrete member with fibre reinforced polymer (FRP) bars. Constr Build Mater 12(8):453–462
Won JP, Park CG, Kim HH, Lee SW, Jang CI (2008) Effect of fibers on the bonds between FRP reinforcing bars and high-strength concrete. Compos B Eng 39(5):747–755
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Taskin, F., Ciftci, C. (2022). Experimental Study on Increase of Bonding Strength of FRP Reinforcement in Concrete. In: Ilki, A., Ispir, M., Inci, P. (eds) 10th International Conference on FRP Composites in Civil Engineering. CICE 2021. Lecture Notes in Civil Engineering, vol 198. Springer, Cham. https://doi.org/10.1007/978-3-030-88166-5_15
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DOI: https://doi.org/10.1007/978-3-030-88166-5_15
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