Comparative Approach to Flexural Behavior of Reinforced Beams with GFRP, CFRP, and Steel Bars

Kabashi, Naser; Avdyli, Besart; Krasniqi, Enes; Këpuska, Arbër

doi:10.28991/cej-2020-03091452

Cited by 13 publications

(6 citation statements)

References 9 publications

(16 reference statements)

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“…FEM provides extensive capabilities for simulation in linear and nonlinear applications. Problems with multiple components and different materials can be simulated by defining the geometry of each component, assigning its constituent materials, and then defining the interaction between these components [22,23]. e present study shows the high capability of FEM that the simulation of the samples provided the ability to examine structures with a suitable graphical environment.…”

Section: Mechanical Propertiesmentioning

confidence: 82%

Performance Evaluation of CFRP Strengthened Corrosion‐Proof Columns

Mirdarsoltany

Rahai

Kabir

2021

Shock and Vibration

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The application of FRP composites in recent years has attracted much attention. Lightweight, high strength, and corrosion resistance are among the properties that make this material available in various forms in construction engineering. The present study analyzed the performance of carbon fiber-reinforced accelerated corrosion-proof box. Nine columns without corrosion and cross-corrosion reinforcement were tested in laboratory and software. Syntax reinforcement was applied locally to the damaged area with respect to a transverse and longitudinal layer. The results of the axial test showed that, due to corrosion, the damaged site was weakened by the loading and severe resistance decreased, and the range of damage points due to the axial load was highly deformed compared to the initial state. The damage caused on both sides of the steel column had a significant effect on reducing the hardness and deformation of the steel columns; it is worth noting that the corrosion on both sides of the steel column had the most variations among the samples. Application of CFRP with 2 layers in the damaged steel columns resulted in increased bearing capacity and hardness in the affected area due to corrosion so that reinforcement of these columns by carbon fibers improved the axial strength.

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Section: Mechanical Propertiesmentioning

confidence: 82%

Performance Evaluation of CFRP Strengthened Corrosion‐Proof Columns

Mirdarsoltany

Rahai

Kabir

2021

Shock and Vibration

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“…Figures from Figure (15) to Figure (19) show a comparison of the load-deflection curves for the specimens. When employing GFRP, it was observed that as the cracking load is reached, there is a decline in slope following the initial linear branch with a sharp slope that corresponds to the uncracked section.…”

Section: Deflection Valuesmentioning

confidence: 99%

“…In comparison to steelreinforced concrete beams, the GFRP-steel reinforced concrete beams exhibited crack breadth and deflection that appeared more quickly [9]. Compared to the normal beam, the beam strengthened with GFRP bars had more cracks [13], [15]. GFRP reinforced concrete beams have a higher deflection and can support a lower weight than steel reinforced concrete beams.…”

Section: Introductionmentioning

confidence: 99%

Comparative Study on Using Steel and Glass Fiber Reinforced Polymer Rebars as Reinforcement on Flexural Behavior of Concrete Beams.

Elkhouly,

Tayel,

Sallam

2024

ERJ. Engineering Research Journal

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Due to problem of steel corrosion and high cost, the use of glass fiber reinforced polymers (GFRP) has become more convenient to be used widely nowadays. This study implicated experimental, numerical, and analytical comparison between GFRP and steel RC beams. Twelve beams were tested under four-point flexural load till failure, The beams had a clear span of 2000 mm and a cross sectional area width and height of 120 mm and 300 mm, respectively. The beams were categorized into two groups (A and B) from these twelve beams according to reinforcement type (steel or GFRP). Group A consists of four beams while group B includes eight beams. Two reinforcement types were used: high tensile steel (10 mm dia.) and GFRP rebars (8 mm and 10 mm dia.) with reinforcement ratios 0.5% and 1%. Numerical study using ABAQUS 6.14 was performed with the following parameters: concrete strength, diameter of the reinforcing GFRP bars, reinforcement ratio, and type of reinforcement. According to test results, utilizing GFRP bars in beams of 25 MPa concrete strength increased the failure load by an average of 18% and 7% while beams of 35 MPa concrete strength increased by an average of 22% and 11% for beams of 0.5% and 1.0% reinforcement ratio, respectively. The mid-span deflection was dramatically increased when utilizing GFRP bars as opposed to steel bars. A comparison between experimental, analytical, and numerical results was done and showed good consistency.

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“…Nasser et al [23] used the damage relations based on visual inspection data to study the efficiency of a 2D modeling approach in predicting the behavior of corroded reinforced concert beams. Kabashi et al [29] worked on a comparative approach of a reinforced beam flexural behavior with steel bars and fiber reinforced polymers, considering corrosion in aggressive environmental conditions. Wang et al [30] studied the corrosion mechanism in multiphysics coupled environments, including time dependency, electrode reaction kinetics, mass transfer, and ion concentration, revealing the impact of the combined effect of the solution chemistry and electrical field on the corrosion process.…”

Section: Literature Reviewmentioning

confidence: 99%

Corroded RC Beam Behavior Subjected to Random Loading in Various Pore Saturation Levels: Coupled Numerical Analysis

Meterfi¹,

Trouzine²,

Houmadi³

2022

ACSM

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Steel represents the majority of civil infrastructure. Corrosion is the principal source of structural degradation, primarily affected by the aggressive environment corrosion is a multiphysical process that occurs at the steel/electrolyte interface. This work presents a mechano-electrochemical coupling study of a corroded reinforced concrete (RC) beam subjected to section loss and a randomly varying load over time. A corrosion cell is created by connecting a zinc anode electrically to the RC beam system. This study uses numerical coupling techniques based on the mechanistic and kinetics of the corrosion process to evaluate the corrosion rate at different pore saturation degrees. The results reveal the impact of section loss on the RC beam displacement over time; as the crosssection reduces, the beam's ductility decreases, resulting in a yield and ultimate strength reduction. The moisture content effect on the electrochemical corrosion processes and oxygen diffusivity indicate that pore saturation levels are the primary determinant of the corrosion rate. The proposed numerical model explains the efficiency of coupled numerical analysis in the RC beam mechanical behavior assessment under corrosive conditions; the results include the concrete's porosity impact on the electrochemical corrosion process and the zinc anode contribution to steel corrosion protection.

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Comparative Approach to Flexural Behavior of Reinforced Beams with GFRP, CFRP, and Steel Bars

Cited by 13 publications

References 9 publications

Performance Evaluation of CFRP Strengthened Corrosion‐Proof Columns

Performance Evaluation of CFRP Strengthened Corrosion‐Proof Columns

Comparative Study on Using Steel and Glass Fiber Reinforced Polymer Rebars as Reinforcement on Flexural Behavior of Concrete Beams.

Corroded RC Beam Behavior Subjected to Random Loading in Various Pore Saturation Levels: Coupled Numerical Analysis

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