MANUFACTURING AND PROPERTIES OF HYBRID BFRP & GFRP BARS | ||
| Journal of Al-Azhar University Engineering Sector | ||
| Articles in Press, Corrected Proof, Available Online from 23 October 2025 PDF (910.45 K) | ||
| Document Type: Original Article | ||
| DOI: 10.21608/auej.2025.372086.1803 | ||
| Authors | ||
| Mohamed Hamdy Abo-Elkassem* 1; Ayman M. Othman2; Ashraf Ahmed2; Mohamed Zakaria2 | ||
| 1Department of Civil Engineering, Faculty of Engineering, New Cairo Academy, Cairo, Egypt | ||
| 2Department of Civil Engineering, Faculty of Engineering, Aswan University, Aswan, Egypt | ||
| Abstract | ||
| The durability of reinforced concrete elements is a constant challenge for engineers around the world, especially in marine environments. Under these difficult conditions faced by concrete structures in aggressive environments, concrete is more susceptible to excessive cracking that allows water or other aggressive agents to pass through it, thus causing corrosion of the reinforcing steel. This corrosion reduces the cross-sectional area of the bar, reducing its tensile strength and its resistance to bonding with the concrete. Deteriorated concrete structures require regular maintenance to extend their service life and may require expensive rehabilitation costs, which may equal the budget of building a new building. Recently, fiber-reinforced polymer (FRP) reinforcement bars, such as carbon, basalt, and glass reinforcement bars, have become widespread, and their use may be an effective solution to improve the durability of concrete structures in aggressive environments in general. Previous studies have confirmed that carbon bars have the least ductility and the highest tensile strength, while glass has the best ductility but the least tensile strength. Basalt bars have a relatively average ductility among other fiber bars and a much higher tensile strength than ordinary reinforcing steel. Therefore, this research is concerned with the manufacture of hybrid bars of basalt fibers and glass fibers in different proportions to benefit from the high tensile strength of basalt fibers and the high ductility of glass fibers and reach the optimum ratio that achieves the highest efficiency. | ||
| Keywords | ||
| durability; Fiber-reinforced polymer (FRP); aggressive environments; corrosion; hybrid bars | ||
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