A state-of-the-art review: Shear performance of the concrete beams reinforced with FRP bars

Liang, Xiangzhou; Peng, Juanzhao; Ren, Rong

doi:10.1016/j.conbuildmat.2022.129996

Cited by 16 publications

(6 citation statements)

References 101 publications

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“…Compared with previous studies by Said et al [12,15], we found that there are a total of three types of failure from B-1~B-6., i.e., diagonal compression failure (DC), shear compression failure (SC), and diagonal tension failure (DT). The detailed failure mode of each beam is given in Table 3.…”

Section: Failure Modecontrasting

confidence: 71%

“…Over the last 30 years, many scholars have carried out experimental studies on the shear performance of FRP-reinforced concrete beams [11][12][13][14][15][16][17]. It has been found that the shear performance of FRP-reinforced concrete beams is similar to that of concrete beams reinforced by steel, i.e., the shear capacity was also affected by the shear span to depth ratio, longitudinal reinforcement ratio, stirrup ratio and concrete strength [11].…”

Section: Introductionmentioning

confidence: 99%

“…The shear span to depth ratio was the critical factor affecting the failure mode. As the shear span to depth ratio increased, the failure mode changed from diagonal compression failure to shear compression failure, then to diagonal tension failure, and even to flexural failure [12]. Grace et al [13] experimentally studied the failure mode and ductility of simply supported and continuous concrete beams reinforced with FRP bars.…”

Section: Introductionmentioning

confidence: 99%

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Experimental and Theoretical Studies on the Shear Performance of Concrete Beams Reinforced with Fiber-Reinforced Polymer Stirrups

Zhao,

Bao,

Yang

et al. 2024

Materials

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In this paper, the shear behavior of concrete beams reinforced with FRP stirrups is studied. The shear performances of six concrete beams with a size of 150 mm × 300 mm × 3000 mm under four-point loading up to failure were experimentally analyzed. The critical parameters included the shear span to depth ratio (λ) and stirrup spacing (S). The test results revealed that as λ increased from 1 to 2, 3, and 4, the ultimate shear capacity of the beam decreases by 50.5%, 67.7%, and 69.2%, respectively. Meanwhile, as S increased from 100 mm to 150 mm and 200 mm, the ultimate shear capacity decreased by 16.1% and 44.6%, respectively. A new shear capacity calculation model of concrete beam reinforced with FRP stirrups was also proposed, which further considered the shear capacity of the FRP stirrups on the basis of the shear capacity of an RC beam without stirrups using the strut-and-tie model. Finally, the experiment and calculation results of 56 beam specimens reinforced with FRP stirrups extracted from this paper and previous studies were compared using the calculation models proposed in this paper, in order to evaluate the accuracy of these calculation models.

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Section: Failure Modecontrasting

confidence: 71%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Experimental and Theoretical Studies on the Shear Performance of Concrete Beams Reinforced with Fiber-Reinforced Polymer Stirrups

Zhao,

Bao,

Yang

et al. 2024

Materials

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“…In the last decades, fiber-reinforced polymer (FRP) bars have been a promising alternative to conventional steel rebars due to their better corrosion resistance, high tensile strength-weight ratio, and nonmagnetic nature (ACI 440.1R, 2015). Replacing conventional steel with FRP rebars has been investigated thoroughly (Aiello and Ombres, 2000; Alsayed et al, 2000; Benmokrane et al, 1995; El-Gamal et al, 2011; El-Nemr et al, 2013; El-Sayed et al, 2006; Esmaeili et al, 2020; Junaid et al, 2019; Liang et al, 2023; Ramachandra Murthy et al, 2020; Sarhan and Al-Zwainy, 2022) and several countries and regions developed design guides for FRP reinforced concrete structures, such as Japan (JPCI, 2021; JSCE, 1997), Europe (Fib, 2007, fib, 2023), Canada (CSA 2012; ISIS 2007), and America (ACI 440.1R 2015; ACI 440.11 2022). However, the wide range utilization of FRP reinforcements, particularly as a longitudinal reinforcement, has been rather limited due to their two main drawbacks: linear elastic behavior until rupture and low elasticity modulus.…”

Section: Introductionmentioning

confidence: 99%

Flexural behavior of concrete beams hybrid-reinforced with glass fiber-reinforced polymer, carbon fiber-reinforced polymer, and steel rebars

Terzioglu,

Eryilmaz Yildirim,

Karagoz

et al. 2024

Advances in Structural Engineering

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The utilization of fiber-reinforced polymer (FRP) reinforcements in structural design is increasing due to their non-corrosive nature. However, the anisotropic features and linear elastic behavior of FRP rebars have led researchers to explore the use of hybrid combinations of FRP and steel reinforcements. Current codes and guidelines predominantly focus on the design of glass FRP (GFRP) reinforced structural elements, leaving a gap in incorporating the hybrid use of FRP-steel combinations and different types of FRP materials, such as carbon FRP (CFRP). This study conducted experimental investigations on concrete beams reinforced with GFRP, CFRP, and hybrid (GFRP-steel and CFRP-steel in combination) rebars, comparing the results with theoretical models. Ten full-scale beams were tested under monotonic loading. Test results revealed that existing codes overestimate GFRP reinforced beam displacements while underestimating CFRP reinforced beam displacements. A reduction factor is proposed for the effective moment of inertia expression given by ACI 440.11-22 to predict the deflections of CFRP reinforced and hybrid reinforced beams. The experimental data for CFRP and hybrid reinforced concrete beams align well with the predictions calculated using the proposed equations.

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“…Additionally, (FRP) materials are renowned for their ability to withstand chemical exposure. Specifically, (GFRP-HW) and (BFRP) rebars exhibit excellent resistance in both alkaline and saline environments [9,10]. However, it is essential to thoroughly examine various aspects of this reinforcement technology, particularly the bond behavior within the concrete.…”

Section: Introductionmentioning

confidence: 99%

Comparative Study of GFRP and Steel Rebar Bonding in Concrete: Experimental Analysis and Crack Prediction

Sdiri,

Meddeb,

Ghorbel

et al. 2024

RCMA

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The glass fiber reinforced polymers (GFRP) bars are considered as an alternative to steel reinforcement in certain structures cases due to their non corrosive aspect. Perhaps, they exist with different surface treatment helically wrapped (GFRP-HW) and sand coated (GFRP-S). Thus, each rebar type is performed by a particular bond behavior with the concrete and it affects the concrete crack formations. In the first part of this paper, an experimental and analytical study of the bond behaviour between the (GFRP), rebars and concrete were carried-out. Pull out test tests have been applied on concrete cylindrical slabs in order to identify experimentally the bond behaviour between the self-compacting concrete and GFRP. Various parameters were taken in account in this experimental study: the rebar diameters, the concrete age, and the rebar roughness. Based on the experimental results, the failure mode of the bond specimens, the variation of the bond load, and the bond-slip variation are analyzed. Two failure modes of the GFRP rebars were experimentally identified: the pull-out failure mode and the splitting one. According to the experimental data, it was proven that the GFRP-S rebars and the steel ones exhibit a more bond performant than that of the GFRP-HW rebars. In the second part, an analytical identification of the BPE and the CMR models was established. Subsequently, a tension tie model was extended analytically in order to predict the crack patterns of concrete elements reinforced with the GFRP rebars and steel rebars. The expressions of the cracking parameters issued from the tension tie model have been developed. It can be deduced that the GFRP-HW and GFRP-S reinforced concrete element exhibits a longitudinal strain less than that of the steel reinforcement case. Hence, the GFRP reinforced element undergoes cracks that are characterized by more important width measurements than those of the cracks deduced from the case of the reinforced steel element. Finally, the stress-strain analytical diagram of a GFRP tension member has been plotted and compared to the steel tension element.

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A state-of-the-art review: Shear performance of the concrete beams reinforced with FRP bars

Cited by 16 publications

References 101 publications

Experimental and Theoretical Studies on the Shear Performance of Concrete Beams Reinforced with Fiber-Reinforced Polymer Stirrups

Experimental and Theoretical Studies on the Shear Performance of Concrete Beams Reinforced with Fiber-Reinforced Polymer Stirrups

Flexural behavior of concrete beams hybrid-reinforced with glass fiber-reinforced polymer, carbon fiber-reinforced polymer, and steel rebars

Comparative Study of GFRP and Steel Rebar Bonding in Concrete: Experimental Analysis and Crack Prediction

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