A review of the research and application progress of new types of concrete-filled FRP tubular members. (20th December 2021)

• Record Type: Journal Article
• Authors: Dong, Zhiqiang; Han, Tianhao; Zhang, Bai; Zhu, Hong; Wu, Gang; Wei, Yang; Zhang, Pu
• Is Part Of: Construction & building materials. Volume 312(2021)
• Publication Date: 2021-12-20
• Subjects: FRP tubular columns -- Newly built structures -- New type of concrete -- Compressive capacity -- FRP tubular arches; Building materials -- Periodicals; 624.18
• DOI: 10.1016/j.conbuildmat.2021.125353
• Languages: English
• ISSNs: 0950-0618

Abstract

Highlights: The latest studies of FRP tube-reinforced concrete structures were reviewed. The types of internally filled concrete were introduced emphatically. A new type of curved FRP tubular arch was introduced. The related work can promote the application of FRP tubes in new structures. Abstract: In recent decades, fibre-reinforced polymers (FRPs) have received extensive attention from the civil engineering field due to their light weight, high strength, corrosion resistance, fatigue resistance, and designability. The forms of FRP products used in civil engineering structures include FRP sheets/plates, FRP bars/cables, FRP profiles, FRP grids, and FRP tubes. Among them, FRP tubes can not only be used as formwork for concrete pouring but can also provide lateral confinement similar to steel tubes; moreover, they have the advantages of corrosion resistance and nonmagnetic properties. Therefore, it is particularly suitable for newly built structures under harsh service environments. In recent years, extensive research on traditional concrete-filled FRP tubes (CFFTs) has already been widely carried out in terms of experimental tests and theoretical analysis, and scholars have turned their attention to innovations in the types of internally filled concrete. The concrete type has extended from ordinary concrete to sea-sand concrete (including seawater sea-sand concrete), lightweight aggregate concrete, recycled aggregate concrete, ultrahigh performance concrete, and alkali-activated concrete. In addition, in terms of the tube shape, a new type of curved FRP tubular arch has been innovatively developed. In light of the above, this paper comprehensively reviewed the latest innovative studies of FRP tube-reinforced concrete structures in terms of the filled concrete type and the tube shape in the literature, which can provide a reference for follow-up research and their actual application.