Effect of cracking and residual deformation on behavior of concrete beams with different scales under fire exposure

Zhang, Hai Yan; Li, Qi Yu; Kodur, Venkatesh; Lv, Hao Ran

doi:10.1016/j.engstruct.2021.112886

Cited by 16 publications

(1 citation statement)

References 18 publications

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“…As highlighted by Duarte et al (2022), the occurrence of wider cracks in the concrete also promotes an oxidative environment, in which the resin and the glass fibers are more rapidly degraded (compared to an inert environment) (Mouritz and Gibson 2006). It is worth mentioning that the influence of cracking on the thermal field of concrete members has also been investigated; however, there is a lack of consensus on its influence, with some studies showing that heat propagation tends to increase in the presence of cracks (Ba et al 2016(Ba et al , 2019, whilst others show the opposite trend (Vejmelková et al 2008;Wu et al 2014), and some state that cracking has no meaningful influence in heat propagation within concrete (Ervine et al 2012;Zhang et al 2021).…”

Section: Concrete Strength and Load Levelmentioning

confidence: 99%

Fire Behavior of GFRP-Reinforced Concrete Structural Members: A State-of-the-Art Review

et al. 2023

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The use of glass fiber-reinforced polymer (GFRP) bars in reinforced concrete (RC) structures has grown significantly in recent years, most notably in bridge deck applications, as they provide an innovative solution to address stringent durability requirements in severe environmental conditions. However, concerns regarding the degradation of mechanical properties of GFRP bars and their bond to concrete at elevated temperature, as well as a lack of fire design guidance, remain obstacles to their widespread use in buildings. This paper presents a review of the available literature regarding the fire performance of GFRP-RC structural members, as well as a summary of relevant research needs. First, it addresses the effects of elevated temperature on the thermal and mechanical properties of GFRP bars. Second, experimental and numerical studies of GFRP bars' bond behavior at elevated temperature, and of the fire performance of GFRP-RC beams and slabs, are discussed. Finally, the available fire design guidance is discussed, and recommendations for future research are given.

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