FRP Properties Effect on Numerical Deformations in FRP Bars-Reinforced Concrete Elements in Hot Zone

Zaidi, Ali; Brahim, Mohammed Moulay; Mouattah, Kaddour; Masmoudi, Radhouane

doi:10.1016/j.egypro.2017.11.290

Cited by 5 publications

(6 citation statements)

References 3 publications

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“…These studies confirmed that minimum concrete covers and wide bar spacings should be used to minimize the potential of cracking and spalling due to rapid heating (Masmoudi et al 2005;Zaidi et al 2013Zaidi et al , 2017Bellakehal et al 2014). Minimum covers ranging from 1.3 to 2.8 times the bar diameter were found enough to prevent cracking of concrete at temperatures up to 80 ºC (Masmoudi et al 2005;Zaidi et al 2013Zaidi et al , 2017Bellakehal et al 2014).…”

Section: Thermal Expansion Coefficientsupporting

confidence: 52%

“…This could lead the bars to become directly exposed to fire, resulting in fast heating and degradation of mechanical and bond properties. The consequences of the (transverse) thermal incompatibility between concrete and GFRP bars on the cracking behavior of concrete has been studied by several authors (Gentry and Hudak 1996;Aiello 1999;Aiello et al 1999;Gentry and Husain 1999;Masmoudi et al 2005;Zaidi et al 2013Zaidi et al , 2017Bellakehal et al 2014) up to about 80 ºC, significantly below the relevant temperature range in a fire scenario. These studies confirmed that minimum concrete covers and wide bar spacings should be used to minimize the potential of cracking and spalling due to rapid heating (Masmoudi et al 2005;Zaidi et al 2013Zaidi et al , 2017Bellakehal et al 2014).…”

Section: Thermal Expansion Coefficientmentioning

confidence: 99%

“…The consequences of the (transverse) thermal incompatibility between concrete and GFRP bars on the cracking behavior of concrete has been studied by several authors (Gentry and Hudak 1996;Aiello 1999;Aiello et al 1999;Gentry and Husain 1999;Masmoudi et al 2005;Zaidi et al 2013Zaidi et al , 2017Bellakehal et al 2014) up to about 80 ºC, significantly below the relevant temperature range in a fire scenario. These studies confirmed that minimum concrete covers and wide bar spacings should be used to minimize the potential of cracking and spalling due to rapid heating (Masmoudi et al 2005;Zaidi et al 2013Zaidi et al , 2017Bellakehal et al 2014). Minimum covers ranging from 1.3 to 2.8 times the bar diameter were found enough to prevent cracking of concrete at temperatures up to 80 ºC (Masmoudi et al 2005;Zaidi et al 2013Zaidi et al , 2017Bellakehal et al 2014).…”

Section: Thermal Expansion Coefficientmentioning

confidence: 99%

See 2 more Smart Citations

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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Section: Thermal Expansion Coefficientsupporting

confidence: 52%

Section: Thermal Expansion Coefficientmentioning

confidence: 99%

Section: Thermal Expansion Coefficientmentioning

confidence: 99%

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

et al. 2023

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“…Compared to steel bars, FRP bars have good corrosion resistance. However, because of the low elastic modulus and brittle failure characteristic , the FRP reinfroced concrete structure has low rigidity therefore, large deformation and large cracks under loading, showing the characteristics of brittle failure [6][7][8][9][10] .The high-strength concrete is linear elastic before reaching the maximum stress, there are few opportunities for plastic deformation and stress redistribution; brittle failure is finally formed [11][12] . As a result, FRP reinforced high-strength concrete beams fails a very brittle manner [13][14] .…”

Section: Introductionmentioning

confidence: 99%

Cracks width prediction of steel-FRP bars reinforced high-strength composite concrete beams

Wang

Fan²,

Fu³

et al. 2022

Structures

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“…In order to improve the corrosion resistance of steel reinforcing bars, the fiber reinforced polymer (FRP) bar, which has the characteristics of corrosion resistance and high tensile strength, has become an ideal substitute for steel bars, due to its excellent mechanical properties. However, due to its low elastic modulus, FRP-reinforced concrete structures often have large deformations, large cracks and brittle failure characteristics [1][2][3][4]. The recent development of steel-FRP composite bars (SCFCB) makes up for the lack of ductility of FRP rebars to some extent, and reduces engineering costs [5,6].…”

Section: Introductionmentioning

confidence: 99%

Comparative Study of Steel-FRP, FRP and Steel-Reinforced Coral Concrete Beams in Their Flexural Performance

Wang

Zhang

Huang³

et al. 2020

Materials

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In this study, a comparative study of carbon fiber reinforced polymer (CFRP) bar and steel–carbon fiber composite bar (SCFCB) reinforced coral concrete beams was made through a series of experimental tests and theoretical analyses. The flexural capacity, crack development and failure modes of CFRP and SCFCB-reinforced coral concrete were investigated in detail. They were also compared to ordinary steel-reinforced coral concrete beams. The results show that under the same conditions of reinforcement ratios, the SCFCB-reinforced beams exhibit better performance than CFRP-reinforced beams, and stiffness is slightly lower than that of steel-reinforced beams. Under the same load conditions, the crack width of SCFCB beams was between that of steel-reinforced beams and CFRP bar-reinforced beams. Before the steel core yields, the crack growth rate of SCFCB beam is similar to the steel-reinforced beams. SCFCB has a higher strength utilization rate—about 70–85% of its ultimate strength. Current design guidance was also examined based on the test results. It was found that the existing design specifications for FRP-reinforced normal concrete is not suitable for SCFCB-reinforced coral concrete structures.

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FRP Properties Effect on Numerical Deformations in FRP Bars-Reinforced Concrete Elements in Hot Zone

Cited by 5 publications

References 3 publications

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

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

Cracks width prediction of steel-FRP bars reinforced high-strength composite concrete beams

Comparative Study of Steel-FRP, FRP and Steel-Reinforced Coral Concrete Beams in Their Flexural Performance

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