Evaluation of mechanical properties and flexural behavior of FRCM system composed of different types of textile grid and AL powder

Jo, Min-Su; Kim, Kil-Hee; Lee, Yong-Jun; Kim, Dong Hwan

doi:10.1016/j.conbuildmat.2022.126552

Cited by 3 publications

(2 citation statements)

References 17 publications

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“…A linear relationship between compressive strength and maximum lateral confining pressure is proposed. In the peak axial stress calculation, the modulus of elasticity of FRCM is determined by the clevis-type direct tensile test presented in AC434 [36], which is not consistent with the modulus of the fibers [9]. The contribution of the confinement of the transverse steel reinforcement is not included.…”

Section: Available Predictive Formulamentioning

confidence: 99%

“…Previous experimental studies have shown that FRCMs can be effectively applied in the reinforcement of conventional reinforced concrete (RC) and masonry members. In addition to being extensively studied in the mechanical properties of FRCM composites [8], it has been used as an externally bonded reinforcement in bending [9][10][11] and shear [12][13][14] members of RC beams, showing increases in strength, stiffness, and ductility, as well as decreases in crack width and deflection. FRCMs have also been used as external confinement to increase the strength and deformation performance of axially loaded members [15].…”

Section: Introductionmentioning

confidence: 99%

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Prediction of Flexural Strength of RC Circular Columns Considering Lateral Confinement Effects of FRCM and Transverse Steel Reinforcement

Jo,

Kim,

Kim

et al. 2023

Buildings

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There has recently been growing interest in making a sustainable and durable fiber reinforced cementitious matrix (FRCM) to improve the seismic performance of RC column members. However, most studies evaluating the lateral confinement effect on FRCM jacketing concrete have excluded the confinement effect of transverse steel reinforcement and focused solely on mechanical properties. This paper, based on existing studies, proposes a peak axial stress formula that considers the lateral confinement effects of FRCM composite and transverse steel reinforcement. Additionally, the study assesses the structural performance of FRCM composites with flexural strengthening in actual size RC circular columns and predicts the maximum flexural strength by applying the proposed formula. The proposed peak axial stress formula, considering the influence of transverse reinforcement, was compared with the experimental value (databases) and the predicted value, and the suitability was confirmed with a standard deviation of 27.6% and a coefficient of variation of 0.856. In addition, the maximum flexural strength of actual size RC circular columns predicted by applying this formula ranged from 0.97 to 1.02, which effectively predicted the experimental values.

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Section: Available Predictive Formulamentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Prediction of Flexural Strength of RC Circular Columns Considering Lateral Confinement Effects of FRCM and Transverse Steel Reinforcement

Jo,

Kim,

Kim

et al. 2023

Buildings

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Matrix and fabric contribution on the tensile behaviour of fabric reinforced cementitious matrix composites

Mercedes

Castellazzi

Bernat-Masó

et al. 2023

Construction and Building Materials

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Evaluation of Behavior Characteristics of Reinforced Concrete Beam Shear Strengthening with Different FRCMs

Jo,

Kim,

Kim

et al. 2024

Buildings

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This paper evaluated the structural behavior of shear-strengthened externally bonded FRCM composites. The additional shear strength of FRCM composites with three different types of textile grids (T1, T2, and T3) was analyzed for different crack patterns and failure modes. The influence of the internal transverse reinforcement ratio (ρw: 0.19%, 0.285%) and application method (SB: side bonding; UW: U-type wrapping) on the FRCM-strengthened beam was investigated. Furthermore, the interaction of FRCM composites with internal shear reinforcement was analyzed based on the strain distributions measured in the experiments. The experimental results showed that the failure modes (flexural, shear slippage, and shear debonding) changed depending on the type of textile grid applied. A reduction in shear reinforcement strain (interaction) due to FRCM strengthening was observed for all the strengthened beams, with differences depending on the shear reinforcement ratio and the type of textile grid. In addition, the ratio of the strain measured at the ultimate load to the strain of the textile grid in shear-failed reinforced beams was the lowest for the T3 grid, which had worse physical properties, and increased at lower shear reinforcement ratios. However, application methods (SB, UW) did not show significant differences.

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Evaluation of mechanical properties and flexural behavior of FRCM system composed of different types of textile grid and AL powder

Cited by 3 publications

References 17 publications

Prediction of Flexural Strength of RC Circular Columns Considering Lateral Confinement Effects of FRCM and Transverse Steel Reinforcement

Prediction of Flexural Strength of RC Circular Columns Considering Lateral Confinement Effects of FRCM and Transverse Steel Reinforcement

Matrix and fabric contribution on the tensile behaviour of fabric reinforced cementitious matrix composites

Evaluation of Behavior Characteristics of Reinforced Concrete Beam Shear Strengthening with Different FRCMs

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