Abstract
In recent years, fiber-reinforced polymer (FRP) composites have been widely used as a new type of high-performance material in concrete structures. FRP composites have the advantages of high strength, light weight, and corrosion resistance. Based on existing studies in the literature, this paper reviews the development and applications of FRP materials for the strengthening and rehabilitation of bridge structures. The types and properties of FRP composites are summarized, and the applications and development of FRP sheets, FRP bars, FRP grids, and prestressed FRP tendons for bridge structures are discussed. Different types of FRP composites result in different failure characteristics and bearing capacities. Moreover, this paper covers the FRP strengthening methods and the response properties of the flexural performance, bonding performance, and ductility. Significant conclusions regarding the strengthening/repair of bridge structures with FRP composites are presented. The review details the current state of knowledge and research on strengthening bridge structures with FRP composites and is helpful for better understanding and establishing design criteria.
Highlights
In recent years, the degradation of concrete structures and steel structures has become increasingly severe [1,2,3,4], affecting the normal use and life of the structures and introducing significant safety hazards. e performance degradation of bridge structures is directly affected by overload, corrosion, fatigue, and other adverse factors
The use of fiber-reinforced polymer (FRP) for strengthening concrete structures has made significant progress, few reviews of the strengthening of bridge structures have been published. erefore, it was necessary to conduct a broad overview of the literature and the existing state of development regarding the application of FRP materials for strengthening bridge structures. is review focuses on the types of FRP materials, strengthening technologies, and performance indicators from the viewpoint of FRPreinforced bridge structures. is review is believed to be useful for researchers and engineers, as it provides a deep understanding of the strengthening of bridge structures using FRP materials
Similar studies were performed by Hosseini et al [152], who applied different prestress levels to near-surface mounted (NSM) carbon fiber-reinforced polymer (CFRP) laminates in reinforced concrete slabs. e experimental results indicated that the bearing capacity at the serviceability and ultimate limit states increased significantly as the prestress increased. e effects of the FRP type, cross-sectional shape, surface treatment method, and prestress level on the flexural performance of bridge decks strengthened with NSM FRP in the negative-bending moment regions were investigated [153]. e results indicated that the NSM FRP method was beneficial for increasing the yield strength and ultimate strength of the reinforced concrete slab
Summary
The degradation of concrete structures and steel structures has become increasingly severe [1,2,3,4], affecting the normal use and life of the structures and introducing significant safety hazards. e performance degradation of bridge structures is directly affected by overload, corrosion, fatigue, and other adverse factors. Ey showed that the angle of application of CFRP sheets (45° and 90°) had almost no effect on the shear capacity of reinforced beams and different ratios of longitudinal reinforcement resulted in different failure modes. Saqan et al [32] indicated that both the strengthening methods of bonded CFRP sheets and NSM bars delayed the yielding of the internal steel reinforcement and resulted in an increase in the flexural strength and a decrease in stiffness degradation of the reinforced concrete frames. Ey indicated that the strengthened method of side-bonded CFRP sheets can improve the flexural strength and increase the shear strength of the reinforced members. Is review focuses on the types of FRP materials, strengthening technologies, and performance indicators (bearing capacity, bonding, and ductility factor) from the viewpoint of FRPreinforced bridge structures. The use of FRP for strengthening concrete structures has made significant progress, few reviews of the strengthening of bridge structures have been published. erefore, it was necessary to conduct a broad overview of the literature and the existing state of development regarding the application of FRP materials for strengthening bridge structures. is review focuses on the types of FRP materials, strengthening technologies, and performance indicators (bearing capacity, bonding, and ductility factor) from the viewpoint of FRPreinforced bridge structures. is review is believed to be useful for researchers and engineers, as it provides a deep understanding of the strengthening of bridge structures using FRP materials
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
