Bond characteristics of different FRCM systems

Younis, Adel; Ebead, Usama

doi:10.1016/j.conbuildmat.2018.04.216

Cited by 51 publications

(16 citation statements)

References 40 publications

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“…The bond behavior between the FRCM layer and the concrete was experimentally studied in many previous papers [8][9][10][11]. Which stated on the structural effects of these interventions strongly depends on the bond between the strengthening material and the concrete.…”

Section: Bond-slip Modelmentioning

confidence: 99%

Nonlinear Finite-Element Analysis for Rc Beams Strengthened With Fabric-Reinforced Cementitious Matrix

Mohamed

Arafa

Drar

et al. 2020

JES. Journal of Engineering Sciences

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Because of the shortcomings of the externally bonded system that mainly consists of epoxy and FRP sheets, the fabric-reinforced cementitious matrix, (FRCM) represents a viable solution in the strengthening of reinforced concrete beams. The FRCM layers consist of fabric mesh embedded in an inorganic stabilized cementitious mortar. Many experimental studies examined the impact of strengthening of RC beams with the FRCM layers, but the numerical investigations are limited. This study is therefore aimed at introducing a numerical study investigating the behavior of RC beams reinforced with FRCM layer. The main goal of this paper is to verify the FEM results with the experimental results that are available in the previous study [1], and to provide a parametric study. The investigated beams in this paper are 150 mm × 250 mm× 3000 mm with two reinforcement ratios. One, two, and three-layers of PBO, (P-Phenylene Benzobis Oxazole) FRCM were investigated as strengthening of the simulated beams were strengthened with. The numerical validation included load-deflection curve, loadstrain of both concrete and PBO-FRCM, strain distribution, cracks series and failure Mohamed Nagah et al., Nonlinear Finite-Element Analysis for Rc Beams Strengthened…… mode. The built model gave an accurately prediction of the attitude of the investigated beams. The results also indicated that the rise in the reinforcement ratio or the amount of FRCM layers contributed to improving behavior under both ultimate and serviceability limit states.

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Section: Bond-slip Modelmentioning

confidence: 99%

Nonlinear Finite-Element Analysis for Rc Beams Strengthened With Fabric-Reinforced Cementitious Matrix

Mohamed

Arafa

Drar

et al. 2020

JES. Journal of Engineering Sciences

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“…To characterize the bond behavior between the fabric and matrix, shear bond tests [14][15][16][17][18][19][20] and pullout tests [21][22][23][24][25][26][27][28][29][30][31][32][33] have been carried out. The studies with performing shear bond tests involve a wide range of factors, including different types of the fabric and matrix, bond lengths of the fabric, the number of the fabric plies, compressive strength of substrate concrete, surface treatment of substrate concrete, substrate materials (masonry or concrete), test setups and so on.…”

Section: Introductionmentioning

confidence: 99%

“…The studies with performing shear bond tests involve a wide range of factors, including different types of the fabric and matrix, bond lengths of the fabric, the number of the fabric plies, compressive strength of substrate concrete, surface treatment of substrate concrete, substrate materials (masonry or concrete), test setups and so on. Besides, these studies also involve different aspects in the bond between the fabric and the matrix and the bond between the composite and the concrete in terms of the failure mode, the strain distribution in the fabric, the loadcarrying capacity, the effective anchorage length, and the bond slip relationship [14][15][16][17][18][19][20]. The bond slip relationship can be obtained for the fabric/matrix interface based on test results from shear bond tests in which an FRCM composite is applied onto the substrate.…”

Section: Introductionmentioning

confidence: 99%

Bond behavior of carbon fabric reinforced cementitious matrix (FRCM) composites considering matrix impregnation

Zhu

Ueda

et al. 2021

Composite Structures

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“…However, the concrete structures deteriorate typically because of several reasons, such as corrosion of the steel reinforcement, inappropriate maintenance, increase in the applied service-load due to change in the original purpose of the structure, or mistakes in the design and construction practice. This leads to confirm the importance of the strengthening process [2]- [4]. Several strengthening materials have been used for stretching such as fiber-reinforced polymer (FRP) composites, fabric-reinforced cementitious matrix (FRCM) [5]- [14], and steelreinforced grout (SRG) [10], [11], [15]- [18].…”

Section: Introductionmentioning

confidence: 58%

Interaction between Internal and External Shear Reinforcement for Strengthened RC Deep Beams

Ibrahim¹,

Aborahmeh²,

Ebead³

2021

International Conference on Civil, Structural and Transportation Engineering

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This paper presents a comprehensive experimental work to study the interaction between the internal and external shear reinforcement for strengthened reinforced concrete (RC) deep beams. For this purpose, a total of twelve medium-scale RC deep beams have been designed, fabricated, and loaded monotonically till a completed failure. Four beams were kept unstrengthened to act as reference beams, while others have been strengthened using hybrid carbon-glass Fiber-reinforced polymer (FRP) strips. All beams have been designed to be shear deficient in one side, which will be called herein as a critical shear span (CSS). The study included three test parameters: strengthening technique (externally bonded and near-surface mounted), number of internal and external shear reinforcement (two and three) in the CSS, and the alignment of the internal and external shear reinforcement (aligned and unaligned) to each other. The results revealed that the near-surface mounted (NSM) technique could be able to mitigate the premature debonding mode of failure which was dominant with the beams strengthened by the externally bonded (EB) counterpart. The NSM technique could be able to increase the shear capacity of the strengthened beams up to 45% compared to the corresponding technique. The results also showed that the unaligned configuration of the internal and external shear reinforcement was better than the aligned one for both NSM and EB techniques.

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Bond characteristics of different FRCM systems

Cited by 51 publications

References 40 publications

Nonlinear Finite-Element Analysis for Rc Beams Strengthened With Fabric-Reinforced Cementitious Matrix

Nonlinear Finite-Element Analysis for Rc Beams Strengthened With Fabric-Reinforced Cementitious Matrix

Bond behavior of carbon fabric reinforced cementitious matrix (FRCM) composites considering matrix impregnation

Interaction between Internal and External Shear Reinforcement for Strengthened RC Deep Beams

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