<scp>RC</scp> members with a flexural‐strengthening layer of <scp>CFRP</scp> textile‐reinforced concrete under monotonic and cyclic long‐term loading

Ghadioui, Redouan El; Wagner, Juliane; Klein, Jonas; Proske, Tilo; Curbach, Manfred; Graubner, Carl‐Alexander

doi:10.1002/suco.202100452

Cited by 8 publications

(5 citation statements)

References 22 publications

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“…Numerous studies have shown that fiber reinforced polymer (FRP), such as aramid fiber reinforced polymer (AFRP), basalt fiber reinforced polymer (BFRP), carbon fiber reinforced polymer (CFRP) and glass fiber reinforced polymer (GFRP), can significantly improve the load bearing and deformation capacity of damaged/ undamaged concrete structures. [1][2][3][4][5][6][7][8] To accurately predict the load bearing capacity of damaged concrete after FRP strengthening, many compressive strength models have been proposed. [9][10][11][12][13][14][15][16][17][18] Guo et al 19 found that a compressive strength model of FRP-confined undamaged concrete Discussion on this paper must be submitted within two months of the print publication.…”

Section: Introductionmentioning

confidence: 99%

Analysis of a compressive strength model for FRP‐confined damaged concrete columns based on the Drucker–Prager yield criterion

Zhang

Xiong

Musa

et al. 2022

Structural Concrete

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Fiber reinforced polymer (FRP) has been widely used in repairing and strengthening of damaged concrete columns due to its excellent material properties. Most of the existing compressive strength models for FRP-confined concrete columns have been established through regression analyses of experimental data, and only a few models were established based on theoretical derivation. Therefore, to extend these compressive strength models based on theoretical derivation, a new strength model based on the Drucker-Prager yield criterion was established in this article, which is suitable for predicting the strength of FRP-confined circular and square concrete columns with loaddamaged, fire-damaged and strain rate. To study the strength model of FRPconfined concrete columns, the author collected 675 test data from published literature and built a large database containing cross-section type, damage type, damage degree and strain rate. In this database, most of the existing strength models in the published literature and the model proposed in this article were evaluated. The evaluation results show that the model can accurately predict the compressive strength of FRP-confined circular and square concrete columns with undamaged, load-damaged, fire-damaged and strain rate.

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Section: Introductionmentioning

confidence: 99%

Analysis of a compressive strength model for FRP‐confined damaged concrete columns based on the Drucker–Prager yield criterion

Zhang

Xiong

Musa

et al. 2022

Structural Concrete

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“…The results showed an acceptable increase in flexural capacity, stiffness, ultimate bending moment, and decrease in ductility. El Ghadioui et al [76] investigated the flexural retrofitting of RB members under long-term cyclic loading. Zhang et al [77] showed that using NSM strips can achieve a 200% gain in flexural resistance.…”

Section: Beamsmentioning

confidence: 99%

Enhancing Resilience and Self-Centering of Existing RC Coupled and Single Shear Walls Using EB-FRP: State-of-the-Art Review and Research Needs

Abbaszadeh

Chaallal

2022

J. Compos. Sci.

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The primary seismic force-resisting system (SFRS) in middle- to high-rise reinforced concrete (RC) building structures often includes coupled shear walls (CSWs) and single shear walls (SSWs). These walls are designed to transfer lateral forces to the foundation and dissipate energy through the development of plastic hinges. The latter lead to residual displacement in these structural components. On the other hand, self-centering systems enable the structures to return to their initial position after severe loading or at least reduce residual displacement. The objectives of this study were, therefore, as follows: (i) to review the state of the art on shear wall self-centering techniques and retrofitting methods based on externally bonded fiber-reinforced polymer (EB-FRP); (ii) to evaluate research needs to improve the self-centering ability of shear walls using EB-FRP.

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“…More importantly, the FRPs are lightweight, strong, and more cost-effective components to manufacture than metal plates. Therefore, the external FRPs bonding process has been widely used to strengthen concrete beams, because it makes the material more ductile (El Ghadioui et al, 2022;Pavithra et al, 2022). Prior studies reported that the FRP composites remained elastic until brittle debonding or FRP failure occurred (Salama et al, 2019;Zhou et al, 2018).…”

Section: Introductionmentioning

confidence: 99%

New Anchorage Technique for GFRP Flexural Strengthening of Concrete Beams Using Bolts-End Anchoring System

Boutrid

Saadi

Mamen

et al. 2023

Int J Concr Struct Mater

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The concept of external glass FRP composite confinement is a current process for strengthening concrete beams subjected to static loads. End anchorage glass FRP composites of 80 mm width and 90–130 mm length with different thicknesses (2.4 and 4.8 mm) have been fixed at the bottom of beams with bolts of various diameters (6 and 10 mm). For this purpose, the behavior of beams strengthened with bolt-end anchoring glass fiber polymer composites (BEGFPC) has been analyzed. It is concluded that the load capacity of the BEGFPC beams is improved by increasing the end-anchorage glass FRP composite thickness (about 98–188%). In addition, the BEGFPC system with bolts of 6 mm diameter has significantly improved the flexibility of beams. In contrast, the 10 mm bolts in diameter give a high ultimate load, whatever their quantity. Therefore, combining bolts with diameters of 6 and 10 mm would be the best solution for increasing the ultimate load and ductility of the retrofitted beams. Depending on the number and bolts' arrangement, there is also an enhancement in the crack patterns by changing from intermediate flexural failure to shear failure in beams.

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RC members with a flexural‐strengthening layer of CFRP textile‐reinforced concrete under monotonic and cyclic long‐term loading

Cited by 8 publications

References 22 publications

Analysis of a compressive strength model for FRP‐confined damaged concrete columns based on the Drucker–Prager yield criterion

Analysis of a compressive strength model for FRP‐confined damaged concrete columns based on the Drucker–Prager yield criterion

Enhancing Resilience and Self-Centering of Existing RC Coupled and Single Shear Walls Using EB-FRP: State-of-the-Art Review and Research Needs

New Anchorage Technique for GFRP Flexural Strengthening of Concrete Beams Using Bolts-End Anchoring System

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