The effects of elevated temperatures on the performance of concrete-filled pultruded GFRP tubular columns

Tabatabaeian, Mojtaba; Khaloo, Alireza; Azizmohammadi, Morteza

doi:10.1016/j.tws.2021.108404

Cited by 9 publications

(2 citation statements)

References 40 publications

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“…In a similar study conducted by Tabatabaeian et al [ 138 ], the properties of concrete filled pultruded GFRP tubular columns were also assessed at high temperatures. The goal of this study was to see how exposure temperature (25–400 °C), exposure time (60 and 120 min), and the strength of the concrete core (30 and 60 MPa) affected the bond and compressive behaviour of CFGTs.…”

Section: Frp-rc Structural Membersmentioning

confidence: 99%

Fibre-Reinforced Polymer Reinforced Concrete Members under Elevated Temperatures: A Review on Structural Performance

et al. 2022

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Several experimental and numerical studies have been conducted to address the structural performance of FRP-reinforced/strengthened concrete structures under and after exposure to elevated temperatures. The present paper reviews over 100 research studies focused on the structural responses of different FRP-reinforced/strengthened concrete structures after exposure to elevated temperatures, ranging from ambient temperatures to flame. Different structural systems were considered, including FRP laminate bonded to concrete, FRP-reinforced concrete, FRP-wrapped concrete, and concrete-filled FRP tubes. According to the reported data, it is generally accepted that, in the case of insignificant resin in the post curing process, as the temperature increases, the ultimate strength, bond strength, and structure stiffness reduce, especially when the glass transition temperature Tg of the resin is approached and exceeded. However, in the case of post curing, resin appears to preserve its mechanical properties at high temperatures, which results in the appropriate structural performance of FRP-reinforced/strengthened members at high temperatures that are below the resin decomposition temperature Td. Given the research gaps, recommendations for future studies have been presented. The discussions, findings, and comparisons presented in this review paper will help designers and researchers to better understand the performance of concrete structures that are reinforced/strengthened with FRPs under elevated temperatures and consider appropriate approaches when designing such structures.

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Section: Frp-rc Structural Membersmentioning

confidence: 99%

Fibre-Reinforced Polymer Reinforced Concrete Members under Elevated Temperatures: A Review on Structural Performance

et al. 2022

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“…12 It also reduces the bond between the concrete core and the tube. 13,14 Quite a few of studies revealed that expansive additives reduce the shrinkage of concrete by inducing chemical reactions in the mixture. 15,16 Expansive concrete is categorized into two groups of shrinkage compensating and pre-stressed concrete.…”

Section: Introductionmentioning

confidence: 99%

Experimental and numerical investigation on the performance of GFRP-confined expansive concrete-filled unplasticized polyvinyl chloride tubes

Khaloo

Borhani

Habibi

et al. 2023

Journal of Thermoplastic Composite Materials

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This paper describes both an experimental study and a numerical investigation on the compressive behavior of new types of solid as well as hollow composite columns, which consist of Unplasticized Polyvinyl Chloride (UPVC) tubes filled with expansive concrete. 32 specimens were categorized into four groups and cast with expansive concrete. Half of the specimens were confined additionally with two layers of GFRP wraps. Furthermore, two specimens were cast with ordinary concrete to be compared with those expansive counterparts. All the composite columns were tested under the monotonic compressive loading. The effects of GFRP confinement, aspect ratio of composite columns ( L/ D), and hollowness of concrete core on compressive behavior were investigated. It was demonstrated that adding expansive agents improved the load-carrying capacity and ductility of columns by enhancing the tri-axial state of stress in the concrete core. Moreover, an increase in aspect ratio decreased both peak load and its corresponding axial strain. Approximately 40% increase was observed in the values of peak load for specimens confined with GFRP wraps. Generally, concrete core removal in the hollow specimens resulted in slightly higher average compressive stress. Finally, a finite element (FE) simulation was performed using ABAQUS software, and the numerical results were validated with experimental tests of the present study.

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Experimental and numerical investigations on the post-heating performance of concrete-filled pultruded GFRP tubes under concentric compression

Mollakhalili,

Tabatabaeian,

Khaloo

2024

Composite Structures

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The effects of elevated temperatures on the performance of concrete-filled pultruded GFRP tubular columns

Cited by 9 publications

References 40 publications

Fibre-Reinforced Polymer Reinforced Concrete Members under Elevated Temperatures: A Review on Structural Performance

Fibre-Reinforced Polymer Reinforced Concrete Members under Elevated Temperatures: A Review on Structural Performance

Experimental and numerical investigation on the performance of GFRP-confined expansive concrete-filled unplasticized polyvinyl chloride tubes

Experimental and numerical investigations on the post-heating performance of concrete-filled pultruded GFRP tubes under concentric compression

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