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 2 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%