Deformation capacity of shear-strengthened concrete beams reinforced with FRP bars: Experimental and analytical investigations

Tran, Cao Thanh Ngoc; Nguyen, Xuan Huy; Le, Dang Dung; Nguyen, Huy Cuong

doi:10.1016/j.cscm.2022.e01411

Cited by 3 publications

(3 citation statements)

References 14 publications

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“…According to the application distribution of these materials, the automobile sector accounts for 31% of utilization, followed by the construction industry with 26% (Friedrich & Almajid, 2012;Guha, 2021;Balla et al, 2023;C. Toduţ et al, 2023;Hadi et al, 2022;Tran et al, 2022). The maritime industry is responsible for 12%, while electronic applications and appliances are responsible for 10% and 8%, respectively (Neşer, 2017;Thomas, 2019).…”

Section: Applicationsmentioning

confidence: 99%

An Updated Review on the Effect of CFRP on Flexural Performance of Reinforced Concrete Beams

Jahami,

Issa

2024

Int J Concr Struct Mater

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This detailed review looks at how carbon fiber-reinforced polymer (CFRP) may be used to improve the flexural capacity of reinforced concrete (RC) beams. It investigates the history, characteristics, and research trends of FRP composites, assesses various flexural strengthening methods utilizing FRP, and addresses the predictive power of finite-element (FE) modeling. The assessment highlights the importance of enhanced design codes, failure mode mitigation, and improved predictive modeling methodologies. It emphasizes the advantages of improving FRP reinforcement levels to meet code expectations and covers issues, such as FRP laminate delamination and debonding. The findings highlight the need of balancing load capacity and structural ductility, as well as the importance of material behavior and failure processes in accurate prediction. Overall, this review offers valuable insights for future research and engineering practice to optimize flexural strengthening with CFRP in RC beams.

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Section: Applicationsmentioning

confidence: 99%

An Updated Review on the Effect of CFRP on Flexural Performance of Reinforced Concrete Beams

Jahami,

Issa

2024

Int J Concr Struct Mater

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“…Yu et al (2021) established the theoretical and practical equations for the shear strength of corroded RC columns, which were subsequently validated through experimental verification. Tran et al (2020) developed an analytical equation by modifying the existing strut-and-tie model to accurately predict the shear strength of RC columns with corroded stirrups. It should be admitted that the aforementioned equations could provide useful references for the seismic performance evaluation of existing RC columns.…”

Section: Introductionmentioning

confidence: 99%

A modified truss-arch model for shear strength evaluation of corroded reinforced concrete columns

Jiang,

Wang,

et al. 2024

Advances in Structural Engineering

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Under seismic loading, corroded reinforced concrete (RC) columns are prone to brittle shear failure, which poses a significant threat to existing structures. However, due to the mechanical defects and insufficient parameters included in the equations available in codes, the literature exhibits a lack of precision in predicting the shear strength of such columns. In this paper, a shear strength equation for the RC column was established based on the truss-arch model theory. On this basis, the effect of corrosion on key parameters such as the cross-sectional area of rebar, yield strength, compressive strength of concrete, and displacement ductility was fully considered to establish the shear strength equation of corroded RC columns. To assess the accuracy and applicability of the proposed equation, a database consisting of 215 specimen parameters was compiled. Comparative analyses were conducted with existing equations from the literature. The results indicate that the mean values and coefficient of variation for the ratio of calculated values to the tested values of the equation were 1.098 and 0.601, respectively, which proves the equation’s high computational accuracy and low dispersion. Consequently, the proposed equation offers a more effective calculation method for predicting and assessing the shear strength of corroded RC columns. This method holds significant potential for enhancing the resilience of structures in seismic-prone regions.

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“…It was seen that flexural and splitting tensile strengths of the experimental mix containing 75% bottom ash and 20% fly ash exceeded much more than the control sample. As can be seen from the previous studies, there are many studies on concrete performance using waste materials (Ghafoori and Bucholc, 1996;Topçu and Bilir, 2010a;Bilir, 2012;Singh and Siddique, 2013;Bilir, 2016;Lee et al, 2019;Karalar et al, 2022;Çelik et al, 2022;Qaidi et al, 2022;Aksoylu et al, 2022a) and other materials such as composite (Alam and Hussein, 2017;Truonga et al, 2017;Araba and Ashour, 2018;Bicer et al, 2018;Deng et al, 2018;Mahmood et al, 2018;Xu et al, 2018;Marvila et al, 2019;Azevedo et al, 2020;Wang et al, 2020;Azevedo et al, 2021;Özkılıç et al, 2021;Akın et al, 2022;Al-Rousan and Al-Muhiedat, 2022;Aksoylu et al, 2022b;Gemi et al, 2022;Huang et al, 2022;Lu et al, 2022;Tran et al, 2022;Özkılıç et al, 2022) in the literature. Researchers have identified differences in the properties of concrete, but few have discussed how the trade-offs of using a fine natural aggregate in place of a typical Portland cement (PC) mix.…”

Section: Introductionmentioning

confidence: 99%

Use of recycled coal bottom ash in reinforced concrete beams as replacement for aggregate

et al. 2022

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In this research, it is studied the crack and flexural behavior of reinforced concrete beams with various bottom ash ratios (BARs) considered as fine aggregate in an experimental and numerical investigation. For experimental purposes, different concrete series are considered varying aggregate sizes ranging from 0 to 25 mm. To supplement concrete, bottom ash is put to use in conjunction with material from 0–5 mm in size aggregate particles as replacement for fine aggregates with ratios of 25%, 50%, 75%, and 100%. Experiments were done to investigate the behavior of the beams and how flexural and fracture behaviors are represented. 75% BARs gave optimum results in terms of displacement capacity. Increasing BAR to 100% decrease deflection capacity of the beam. Also, ANSYS software is used to build 3D finite element models (FEMs) of beams to compare with experiment data. Experimental and 3D numerical tests show exceptionally tight flexural and fracture behaviors. Following this, a computer-generated structure is made by running SAP 2000, and the strength of the beams is then utilised in an RC structural model. Every stage of the building’s construction is thoroughly assessed utilizing multiple types of seismic testing, employing the SAP2000 program, with the resulting analysis providing significant findings on how the seismic force of 75% BAR affects horizontal displacement of each floor. The results showed that the weight of the structure dramatically decreases as the number of columns and RCBs are raised while also increasing the number of BARs. Moreover, the magnitude of earthquake and BAR have a significant effect on the horizontal displacement behavior of reinforced concrete structures. The strength of the concrete structure varies between close- and far-fault earthquakes, and for close-fault earthquakes, concrete strength is stronger than for far-fault earthquakes. This brings us to the second disadvantage of BAR which is the 75% strain produces a severe displacement of reinforced concrete structures. Besides, it was seen that the simulations and experiments yield tiny cracks with very identical configurations.

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Deformation capacity of shear-strengthened concrete beams reinforced with FRP bars: Experimental and analytical investigations

Cited by 3 publications

References 14 publications

An Updated Review on the Effect of CFRP on Flexural Performance of Reinforced Concrete Beams

An Updated Review on the Effect of CFRP on Flexural Performance of Reinforced Concrete Beams

A modified truss-arch model for shear strength evaluation of corroded reinforced concrete columns

Use of recycled coal bottom ash in reinforced concrete beams as replacement for aggregate

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