Abstract
The strength and energy absorption capacity of concrete compression members are a significant concern when considering the structural performance under axial and lateral loads. A lot of methods and different techniques have been proposed in the past to improve the behavior of concrete columns under the applied loads. One such technique is the concrete filled-plastic tube (CFPT) strengthened externally with fiber-reinforced polymers (FRP). Such a system can improve the durability of the structural members. A review of the research work on the durability of the new system under axial and flexural loads is presented. Moreover, a comparison and a brief discussion of the reported results are displayed.
Highlights
Durability and protection of existing infrastructures increased the demand for rehabilitating and retrofitting of concrete compression members found in building substructures and bridges
The durability of concrete filled-plastic tube (CFPT) externally strengthened with fiber-reinforced polymers reviewed in the current study
The current review shows that the characteristic of the polyvinyl chloride (PVC) tube is greatly enhanced when it is externally wrapped with fiber-reinforced polymers (FRP) straps
Summary
Durability and protection of existing infrastructures increased the demand for rehabilitating and retrofitting of concrete compression members found in building substructures and bridges. Several materials have been investigated to improve the performance of concrete, including steel ties [2] and spirals [3], steel tubes [4], (FRP) [5], polymeric polyvinyl chloride (PVC) tubes [6,7,8,9,10,11,12,13,14,15,16,17,18,19] Such systems have been considered as useful for increasing strength of unconfined concrete and enhancing the durability. Over the last five decades, considerable attention focused on CFPT composite materials due to their many advantages [15] These composite materials still cannot fulfill all the engineering requirements, and they lack the necessary stiffness required for structural applications [11]. These include PVC jacket, CFPT-FRP members under compression, and flexure
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