Replacement efficiency of steel reinforcement with FRB bars in RC beams under flexure load: experimental and FE study

Attia, Mohammed M.; Elshaer, Mohamed; Shawky, Shymaa M. M.; Samaan, Morcos F.

doi:10.1007/s41062-022-00879-9

Cited by 5 publications

(4 citation statements)

References 23 publications

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“…Numerical models were also developed by researchers to study the behavior of RC members. [11][12][13][14][15][16][17] Hamoda et al 14,15 developed finite element models (FEM) to study the flexural and shear behavior of RC beams strengthened with engineered cementitious composite and stainless-steel strips. Rageh et al 12 developed FEM of RC beams strengthened with glass fiber reinforcement polymer subjected to flexural load.…”

Section: Introductionmentioning

confidence: 99%

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Tests and finite element modeling of concrete beams reinforced with reused steel bars

Attia,

Abdelsalam,

Eita

et al. 2023

Structural Concrete

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This paper presents the experimental study and finite element modeling of the flexural behavior of concrete beams reinforced with reused steel bars as longitudinal reinforcements. The experimental program and results of eight reinforced concrete (RC) beams constructed with and without reused steel bars are described in detail. The replacement percentages of brand‐new bars with reused steel bars in the tested beams were 50% and 100%. The reused steel bars were coated with and without epoxy. Steel fibers with fractions of 0.5% and 1.0% of the concrete volume were added to the concrete mixes. The load‐deflection relationship, ductility index, toughness, and failure modes of the tested beams are presented and discussed. It is shown that utilizing reused steel bars decreases the ultimate load of RC beams but increases their deflection at the ultimate load compared with the control beam. Increasing the steel fiber ratio increases the ultimate load and the deflection at the ultimate load of RC beams incorporating reused steel bars. However, the zinc‐rich epoxy used to coat the reused steel bars does not affect the behavior of the beams. Three‐dimensional nonlinear finite element (FE) models of the tested beams were developed using ABAQUS and validated against the test results. The developed FE models are capable of accurately simulating the experimentally observed behavior of RC beams with reused steel bars.

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Section: Introductionmentioning

confidence: 99%

“…Numerical models were also developed by researchers to study the behavior of RC members 11–17 . Hamoda et al 14,15 developed finite element models (FEM) to study the flexural and shear behavior of RC beams strengthened with engineered cementitious composite and stainless‐steel strips.…”

Section: Introductionmentioning

confidence: 99%

Tests and finite element modeling of concrete beams reinforced with reused steel bars

Attia,

Abdelsalam,

Eita

et al. 2023

Structural Concrete

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“…The need for reinforced concrete (RC) structures strengthening is becoming more important, especially when there is an increase in ultimate load, degradation trouble, and/or design construction shortcomings [1][2][3]. One of the more conventional approaches to strengthening is using epoxy to bond structural elements with steel plates.…”

Section: Introductionmentioning

confidence: 99%

“…The main objectives of this study are (1) to suggest two adhesive materials to improve the bond between the GFRP laminates and the concrete surface and (2) to study the impact of the adhesive materials on the tested beams' structural behavior. The adhesive materials used are Sikadur ® −330 epoxy (EP) and geopolymer paste (GPP) with different short glass fibers (SGF) ratios.…”

Section: Introductionmentioning

confidence: 99%

Flexural Behavior of RC Beams Strengthened with GFRP Laminate and Retrofitting with Novelty of Adhesive Material

Rageh¹,

El-Mandouh

Elmasry³

et al. 2022

Buildings

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Two unique approaches were proposed to strengthen the bond between the glass fiber reinforcement polymer (GFRP) and the RC concrete surfaces. The two bonding materials are epoxy (EP) and geopolymer (GPP) with different ratios of short glass fibers (SGF). The experimental program includes seven reinforced concrete (RC) beams that have the same cross-section (150 mm × 200 mm) and are 1500 mm in length. The first beam is the control beam (B0-Control). The next three beams B1-0-GPP, B2-0.6-GPP, and B3-1.2-GPP have GPP with SGF ratios of 0%, 0.6%, and 1.2%, respectively. The last three beams B4-0-EP, B5-0.6-EP, and B6-1.2-EP have EP with SGF ratios of 0%, 0.6%, and 1.2%, respectively. The results show that the failure loads of beams B1-0-GPP, B2-0.60-GPP, and B3-1.2-GPP are greater than the control beam B0-Control by approximately 20.80%, 25.60%, and 31.40%, respectively, whereas the failure loads of beams B4-0-EP, B5-0.6-EP, and B6-1.2-EP are greater than the B0-Control by approximately 16.90%, 26.90%, and 26.10%, respectively; it is also noted that debonding occurs. In addition to the adhesive material, GPP has a great effect on increasing the beam’s failure load capacity due to the enhanced interfacial bond shear strength. Additionally, a finite-element program ABAQUS is performed to verify the experimental results.

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Flexural behavior of natural fiber-reinforced foamed concrete beams

Saini,

Spadea,

Matsagar

2024

Archit. Struct. Constr.

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Replacement efficiency of steel reinforcement with FRB bars in RC beams under flexure load: experimental and FE study

Cited by 5 publications

References 23 publications

Tests and finite element modeling of concrete beams reinforced with reused steel bars

Tests and finite element modeling of concrete beams reinforced with reused steel bars

Flexural Behavior of RC Beams Strengthened with GFRP Laminate and Retrofitting with Novelty of Adhesive Material

Flexural behavior of natural fiber-reinforced foamed concrete beams

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