A Comprehensive Review of the Effects of Different Simulated Environmental Conditions and Hybridization Processes on the Mechanical Behavior of Different FRP Bars

Mohammadamin Mirdarsoltany, Farid Abed, Reza Homayoonmehr and Seyed Vahid Alavi Nezhad Khalil Abad
Additional contact information
Mohammadamin Mirdarsoltany: Department of Civil Engineering, Amirkabir University of Technology, Tehran 15875-4413, Iran
Farid Abed: Department of Civil Engineering, American University of Sharjah, Sharjah P.O. Box 26666, United Arab Emirates
Reza Homayoonmehr: Department of Civil Engineering, Amirkabir University of Technology, Tehran 15875-4413, Iran
Seyed Vahid Alavi Nezhad Khalil Abad: Department of Civil Engineering, Birjand University of Technology, Birjand 97175-569, Iran

Sustainability, 2022, vol. 14, issue 14, 1-20

Abstract: When it comes to sustainability, steel rebar corrosion has always been a big issue, especially when they are exposed to harsh environmental conditions, such as marine and coastal environments. Moreover, the steel industry is to blame for being one of the largest producers of carbon in the world. To supplant this material, utilizing fiber-reinforced polymer (FRP) and hybrid FRP bars as a reinforcement in concrete elements is proposed because of their appropriate mechanical behavior, such as their durability, high tensile strength, high-temperature resistance, and lightweight-to-strength ratio. This method not only improves the long performance of reinforced concrete (RC) elements but also plays an important role in achieving sustainability, thus reducing the maintenance costs of concrete structures. On the other hand, FRP bars do not show ductility under tensile force. This negative aspect of FRP bars causes a sudden failure in RC structures, acting as a stumbling block to the widespread use of these bars in RC elements. This research, at first, discusses the effects of different environmental solutions, such as alkaline, seawater, acid, salt, and tap water on the tensile and bonding behavior of different fiber-reinforced polymer (FRP) bars, ranging from glass fiber-reinforced polymer (GFRP) bars, and basalt fiber-reinforced polymer (BFRP) bars, to carbon fiber-reinforced polymer (CFRP) bars, and aramid fiber-reinforced polymer (AFRP) bars. Furthermore, the influence of the hybridization process on the ductility, tensile, and elastic modulus of FRP bars is explored. The study showed that the hybridization process improves the tensile strength of FRP bars by up to 224% and decreases their elastic modulus by up to 73%. Finally, future directions on FRP and hybrid FRP bars are recommended.

Keywords: composite bars; FRP bars; hybrid FRP bars; GFRP bars; BFRP bars; CFRP bars; durability; hybridization process; alkaline solution; seawater solution (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2022
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (2)

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