Author:
Al-Hamrani Abathar,Alnahhal Wael
Abstract
Corrosion is a common condition encountered by steel reinforcing bars which has a considerable negative impact on the structural integrity of concrete structures. Nowadays, applying anti-corrosive composite materials such as fiber-reinforced polymer (FRP) bars as reinforcing bars instead of steel bars is a major area of interest among researchers. The current study presents an investigation on the influence of surface treatment of the basalt (B) FRP reinforcing bars on the shear strength ofone-way high-strength concrete slabs. Two types of BFRP bars were tested, one with a sand-coated surface and the other with a ribbed surface.The testing results showed that the ribbed BFRP bars resulted in a slightly higher shear strength than the slab reinforced with sand-coated bars. The ultimate shear capacity in the ribbed bars reinforced slab was recorded as 95.65 kN, whereas it was recorded as 90.08 kN in the sand-coated bars reinforced slab. Moreover, in comparison to the slab with sand-coated bars, the first flexural crack was delayedin the slab with ribbed bars.Also, reinforcing the one-way slab with ribbed BFRP bars has shown higher stiffness represented by lower midspan deflection at all loading stages compared to the sand-coated bars. As a result, this has induced lower stresses on the ribbed bars, which caused lower midspan strain values in the ribbed bars than the sand-coated bars.
Reference19 articles.
1. Abdul-Salam, B., Farghaly, A. & Benmokrane, B. (2013). "Evaluation of Shear Behavior for One-Way Concrete Slabs Reinforced with Carbon-FRP Bars", CSCE General Conference, vol. 243, Montréal, Québec.DOI:10.13140/RG.2.1.3831.7609.
2. Abdul-Salam, B., Farghaly, A. & Benmokrane, B. (2016). "Mechanisms of shear resistance of one-way concrete slabs reinforced with FRP bars", Construction and Building Materials, vol. 127, pp. 959-970. DOI: 10.1016/j.conbuildmat.2016.10.015.
3. Abushanab, A., Alnahhal, W. & Farraj, M. (2021). "Structural performance and moment redistribution of basalt FRC continuous beams reinforced with basalt FRP bars", Engineering Structures, vol. 240, 112390. DOI: 10.1016/j.engstruct.2021.112390.
4. Al-Hamrani, A. & Alnahhal, W. (2021). "Shear behavior of basalt FRC beams reinforced with basalt FRP bars and glass FRP stirrups: Experimental and analytical investigations", Engineering Structures, vol. 242. DOI: 10.1016/j.engstruct.2021.112612.
5. Al-Hamrani, A. & Alnahhal, W. (2022). "The Influence of Reinforcement Ratio on the Shear Behaviour of Sand Coated Basalt FRP Bars Reinforced Beams", Lecture Notes in Civil Engineering, Ilki, Alper., Ispir, Medine., Inci, Pinar., vol. 198, Springer, Cham, pp. 972-979. DOI: 10.1007/978-3-030-88166-5_85.