Experimental investigation on shear capacity of RC beams with GFRP rebar &amp; stirrups

Vora, Tarak P.; Shah, Bharat

doi:10.12989/scs.2016.21.6.1265

Cited by 7 publications

(6 citation statements)

References 15 publications

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“…In a study conducted by Said et al [46] on RC beams with an a/d ratio of 2 and normal concrete strength, and with a transverse rebar amount below 0.61%, the failure mode observed was Diagonal-Tension-Failure (DTF). In the research by Vora and Shah [47], it was found that failure occurred with either DTF or Stirrups-Rupture-Failure (SRF) in specimens with an a/d ratio of 1.79 and transverse reinforcement ratio below 0.25%. In the context of this study, the numerical models of RC beams with stirrups had a/d ratios ranging from 1.11 to 1.58 and transverse reinforcement ratios from 0.17% to 0.40%.…”

Section: Resultsmentioning

confidence: 99%

“…To compare the shear strength of RC beams with FRP transverse rebar using both existing equations and the proposed equation, we analyzed a total of 105 tests from the following sources: Tottori and Wakui [33], Nagasaka et al [34], Maruyama and Zhao [35], Okamoto et al [36], Nakamura and Higai [37], Zhao et al [38], Maruyama and Zhao [39], Vijay et al [40], Alsayed et al [29], Duranovic et al [41], Alsayed [42], Shehata et al [43], Niewels [44], Ahmed et al [45], Said et al [46], Vora and Shah [47]. In this study, the shear strength of the numerical models is found to be below 500 kN.…”

Section: Comparison With Test Data In the Literaturementioning

confidence: 99%

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Shear Strength Evaluation of Concrete Beams with FRP Transverse Rebar

Sakcalı,

Yüksel

2024

Period. Polytech. Civil Eng.

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Rebar corrosion in traditional reinforced concrete (RC) components may lead to a decrease in service life and carrying capacity. This condition is one of the reasons of the growing popularity of Fiber Reinforced Polymer (FRP) rebars as a corrosion-resistant alternative, particularly in RC infrastructure projects. Because the material properties and behavior of FRP rebar are very different from conventional steel rebar, the calculations used for reinforced concrete with conventional steel reinforcement should be updated for this material. The aim of this study is to propose a new shear strength prediction model for RC beams with transverse steel rebar in order to calculate the shear strength of RC beams with FRP transverse rebar according to TS-500, which is the Turkish Building Code. To achieve this goal, Finite Element Method (FEM) models were created for 27 RC beams with FRP transverse rebars and 9 RC beams without transverse rebars. Furthermore, for RC beams with FRP transverse rebars, a prediction model has been developed. Additionally, 13 prediction models obtained from regulations or scientific studies were compared to the proposed prediction model using a database of 105 tests obtained from previous experimental studies. It was observed that the proposed prediction model provides more consistent results with the test database from the literature compared to the models suggested by other regulations or studies. Therefore, by modifying the shear strength relations recommended in TS-500 for RC beams with transverse steel rebar, they can also be applied to RC beams with transverse FRP rebars.

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Section: Resultsmentioning

confidence: 99%

Section: Comparison With Test Data In the Literaturementioning

confidence: 99%

Shear Strength Evaluation of Concrete Beams with FRP Transverse Rebar

Sakcalı,

Yüksel

2024

Period. Polytech. Civil Eng.

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“…in comparison with metal fittings [14][15][16][17][18]. Therefore, issues related to the improvement of technology and equipment for its manufacture are relevant for the construction industry [19][20][21][22][23][24].…”

Section: Timelinessmentioning

confidence: 99%

Optimization of Production Lines and Cross-sections of Fiberglass Rebar

Maksimov

Dildin

Maksimova

2017

IOP Conf. Ser.: Mater. Sci. Eng.

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Strength and deformability of concrete beams reinforced by non-metallic fiber and composite rebar K L Kudyakov, V S Plevkov and A V Nevskii -Determining reinforcement coverage using an electromagnetic rebar detector P Cikrle, O Anton, A Kinclova et al. Abstract. The article substantiates the need of the construction industry in new lightweight and durable materials that ensure reduction in the cost of work and increase in the operational characteristics of the constructed facilities. These materials include fiberglass reinforcement which is an auxiliary bar made of heavy-duty glass fibers impregnated with a polymer adhesive composition and additionally entwined to create a ribbed surface and tight fit with fiberglass threads. This fitting has undeniable advantages in comparison with steel fittings. The polymer composite is resistant to corroding medium, does not corrode, does not conduct electricity, has high elastic properties, low thermal conductivity, increased tensile strength, etc. It is shown that the issues related to the improvement of technology and the form of a fiberglass rebar section are relevant for the construction industry. So, in particular, the presented developments will significantly reduce the consumption of adhesive composition for impregnating roving threads, reduce production costs by eliminating the loss of adhesive composition in impregnating vessels and pull-guide rollers, increasing the environmental friendliness of production and increasing the line productivity. In addition, it is possible to improve the strength characteristics by optimizing the cross-section and longitudinal cross-sections of the resulting fiberglass reinforcement. The presented changes in the design and technology of fiberglass reinforcement production can be realized as a separate independent module. It is easy to integrate into existing lines during repair work or routine maintenance of equipment.

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“…Flexural strengthening of RC members with externally bonded FRP laminates has been addressed by several researchers in the past three decades 2–6 . A number of investigations have been conducted on the shear strengthening of RC beams as well 7–12 . Moreover, several investigations have been performed on axial load, 13–16 while the study of torsional strengthening of structural elements using FRPs has not received much attention.…”

Section: Introductionmentioning

confidence: 99%

“…[2][3][4][5][6] A number of investigations have been conducted on the shear strengthening of RC beams as well. [7][8][9][10][11][12] Moreover, several investigations have been performed on axial load, [13][14][15][16] while the study of torsional strengthening of structural elements using FRPs has not received much attention.…”

Section: Introductionmentioning

confidence: 99%

Finite element analysis of rectangular RC beams strengthened with FRP laminates under pure torsion

Majed

Allawi

2021

Structural Concrete

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Composite materials have attracted wide attention in strengthening of structural members. In this study, the behavior of rectangular reinforced concrete (RC) strengthened with fiber reinforced polymer (FRP) laminates under pure torsion was investigated numerically and validated by existing data from literature. Various practical strengthening configurations were considered and the efficiency of them was illustrated. Concrete damage plasticity constitutive model was used and required parameters was drawn. Good agreement in terms of torque-twist behaviors of RC beams strengthened with FRP laminates before and after cracking was found. Reasonable steel and FRP reinforcement responses as well as crack patterns were achieved and the failure modes of all the specimens were modeled correctly. A parametric study was carried out and parameter such as number of FRP plies, concrete compressive strength, and FRP strip orientations were considered. The results showed that the torsional capacity could improves by increasing the number of FRP plies and concrete compressive strength. Moreover, no significant change in the torsional capacity of RC beams when it was strengthened with a 45 or with a 90 FRP laminate was observed.

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Experimental investigation on shear capacity of RC beams with GFRP rebar & stirrups

Cited by 7 publications

References 15 publications

Shear Strength Evaluation of Concrete Beams with FRP Transverse Rebar

Shear Strength Evaluation of Concrete Beams with FRP Transverse Rebar

Optimization of Production Lines and Cross-sections of Fiberglass Rebar

Finite element analysis of rectangular RC beams strengthened with FRP laminates under pure torsion

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