Rehabilitation of reinforced concrete beams subjected to torsional load using ferrocement

Alzabidi, Sarah M.; Diaa, Ghada; Abadel, Aref A.; Sennah, Khaled; Abdalla, Hany

doi:10.1016/j.cscm.2023.e02433

Cited by 3 publications

(1 citation statement)

References 37 publications

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“…High-strength cement matrices [19,20] and ferrocement with combined continuous and discontinuous micro-reinforcement, subjected to flexure, have been investigated [21,22]. There have been several proposals of ferrocement strengthening for shear [23,24] and torsion [25]. Some researchers have examined the behavior of RC beams strengthened with ferrocement through the direct application of micro-reinforcement mesh and cement matrix onto prepared concrete surfaces [26][27][28][29][30], utilizing steel connectors.…”

Section: Introductionmentioning

confidence: 99%

Comprehensive Analysis of Ferrocement-Strengthened Reinforced Concrete Beam

Živković,

Blagojević,

Kukaras

et al. 2024

Buildings

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Starting with the premise that the choice of the optimal method for strengthening reinforced concrete (RC) structures is a complex task and that ferrocement strengthening is comparable to other advanced strengthening technologies due to its cost-effectiveness, ease of construction, and durability, this paper presents a comparative study of the flexural bearing capacity of RC beams strengthened with ferrocement strips applied by gluing. An overview of the life cycle assessment (LCA) based on embodied energy or CO2 is presented in the introduction, based on the existing literature review. The research includes tests of 15 RC beams of identical cross-sections (150/250 mm) and a span of 3000 mm. Strengthening was conducted by applying four types of ferrocement strips (different widths and wire mesh layers). Two factors were examined: the verification of the comprehensive FEM numerical model against the experimental results and the applicability of existing simplified calculation methods for sufficiently accurate results which could be used in regular practice. The results show that the failure forces obtained from numerical models and experimental models differ by no more than 3.94%. The increase in the bearing capacity of the strengthened models is up to 21.4%. The transformed area method for the cracked section showed good results when compared to the FEM and experimental models. The analytically calculated failure force is contingent upon the partial factor for variable action, which was explored within the 1.5–1.7 range.

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Section: Introductionmentioning

confidence: 99%

Comprehensive Analysis of Ferrocement-Strengthened Reinforced Concrete Beam

Živković,

Blagojević,

Kukaras

et al. 2024

Buildings

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Repairing of Reinforced Concrete T- section Beam with Web Opening Subjected to Torque by Using Ultra- High Performance concrete (UHPC)

Salman Hawas,

Hasan Ali Al-Salim

2024

IOP Conf. Ser.: Earth Environ. Sci.

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Due to harsh weather factors, overloading, poor design, and material defects, reinforced concrete (RC) constructions’ early degradation has grown significantly over the last few decades. RC element repair is crucial to improving existing structures’ service life. Also, the transverse openings are frequently utilized in beams in modern structures to supply the service pipes. Because stresses are concentrated in a limited region above and below the opening, the presence of openings in concrete beams causes cracks to grow around the openings. Repairing, maintaining, and upgrading structural elements may be among the most important issues in civil engineering applications. This paper studies the effect of the presence of an opening and repairing of reinforced concrete T-section beam with web opening was subjected to torsion by using ultra-high performance concrete panels with a thickness of 20mm; The experimental work included casting seven beams: one beam without an opening and another beam with an opening, and five rest beams were repaired with UHPC panels in different locations. The results show the effect of an opening by decreasing the ultimate torque and increasing the ultimate angle of twist. The increase in ultimate torque for repairing beams compared to the control beam reached 153%, and a decrease in ultimate twist angle for repairing beams compared to the control beam reached 98%.

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Effectiveness of Carbon Fiber-Reinforced Polymer Sheets for Torsional Strengthening of Reinforced Concrete Beams

Kim,

Alqurashi

2024

ACI Structural Journal

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Rehabilitation of reinforced concrete beams subjected to torsional load using ferrocement

Cited by 3 publications

References 37 publications

Comprehensive Analysis of Ferrocement-Strengthened Reinforced Concrete Beam

Comprehensive Analysis of Ferrocement-Strengthened Reinforced Concrete Beam

Repairing of Reinforced Concrete T- section Beam with Web Opening Subjected to Torque by Using Ultra- High Performance concrete (UHPC)

Effectiveness of Carbon Fiber-Reinforced Polymer Sheets for Torsional Strengthening of Reinforced Concrete Beams

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