Shear Strengthening of Reinforced Concrete Beams Using Carbon Fiber Reinforced Polymer Laminate: A Review

Alferjani, M.B.S.; Samad, Abdul; Elrawaff, Blkasem S.; Mohamad, Noridah Binti; Ahmad, Mustaffa Anjang

doi:10.11648/j.ajce.20140201.11

Cited by 13 publications

(5 citation statements)

References 29 publications

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“…CFRP materials are multiphase systems, obtained artificially, by the association of at least two chemically distinct materials, with a clear separation interface between the components and the resulting compound material is created in order to obtain properties that cannot be obtained by any of the components working individually [9,10] The use of modern consolidation systems with polymeric composite materials reinforced with fibers in the structural rehabilitation of reinforced concrete elements and / or structures has well-known and documented advantages, such as: resistance to the action of corrosive agents (chlorine ions), high durability, superior mechanical characteristics (compared to classical materials), reduced execution time, etc.…”

Section: Structural Rehabilitation Using Cfrp Materials 41 General Re...mentioning

confidence: 99%

Computational assessment regarding structural rehabilitation of a reinforced concrete decanter tank

Covatariu,

Filip,

Covatariu

2024

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

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The article describes the analysis of an industrial structure (reinforced concrete decanter tank for the drinking water’s storage in the Iasi – Romania area) in order to justify the proposals for structural rehabilitation to ensure structural stability. In this regard, a computational model was created in Graitec Advanced Design, using the physico-mechanical characteristics of the materials (concrete, reinforcement) from the initial design. Subsequently, using the data obtained from the technical assessment report and the non-destructive tests carried out on the structural elements, it was found a depreciation of the concrete grade (C25/30 → C16/20), at the current stage. At this stage (the structure’s service state) a modelling of the degraded structure was achieved by comparing the results obtained by Graitec Advanced Design and Axis VM, in order to realise an extended structural analysis between initial and current state. A solution for the rehabilitation of degraded elements using polymeric composite materials reinforced with carbon fibers was proposed, which was validated by the Sika CarboDur Composite systems (software program for the design of consolidation solutions).

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Section: Structural Rehabilitation Using Cfrp Materials 41 General Re...mentioning

confidence: 99%

Computational assessment regarding structural rehabilitation of a reinforced concrete decanter tank

Covatariu,

Filip,

Covatariu

2024

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

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“…FE analysis was investigated and the results were verified with an experimental study, it was concluded that all different techniques of strengthening increased the ductility and strength of the walls. Alferjani et al [27] investigated the importance of using carbon fiber reinforced polymer (CFRP) sheets for RC beams shear strengthening. It was investigated that using CFRP sheets extended the service life of reinforced concrete structures and provided an economical solution.…”

Section: Coupled Shear Walls Strengthening Using Frp Laminatesmentioning

confidence: 99%

Strengthening of Coupled Shear Walls – An overview

Mustafa

Abdel-Rahim

Emara

et al. 2021

The Egyptian International Journal of Engineering Sciences and

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FRPCoupling beams are considered one of the most important structural elements due to their vital role in resisting lateral loads by improving the overall building stiffness and reducing the impact of the overturning. The resistance of coupled shear walls (CSWs) to earthquakes depends on the coupling beam (CB) for enhancing the ductility of the system and improving the energy absorption capacity. There are two main types of coupling beams; diagonally reinforced coupling beams and conventionally reinforced ones. In the case of diagonal reinforcement, which is being currently recommended by the new design codes, the coupling beams are more efficient in consolidating the walls and providing better performance in resisting earthquakes. On the other hand, the diagonal reinforcing configuration showed some difficulties in terms of construction. There are already existing buildings that have conventionally reinforced coupling beams, which were designed according to the old codes. These coupling beams are in extreme need of strengthening to resist earthquakes. Therefore, some studies have been conducted to find an alternative to the diagonal reinforcing scheme of coupled shear walls. The methods of strengthening differed whether using steel plates or fibrereinforced polymers sheets. Nowadays Fibre Reinforced Polymers (FRP) are being widely used to strengthen coupling beams and improve the structural behavior of coupled shear walls. This paper presents a summary of some studies available in the literature concerning the strengthening of the coupling beams and coupled shear walls using FRP. Strengthening method, strengthening configurations, failure modes, and test setups are summarized.

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“…Li et al [12] determined that the variation in shear capacity of a strengthened beam depends strongly on the strengthened area. Alferjani et al [13] observed that an epoxy resin is favorable in strengthening and an end anchorage is needed to eliminate debonding failures. FRP-strengthened beams exhibit debonding failure modes at the end of the beams without an end anchorage and a rupture of the FRP in beams with an end anchorage [14][15][16][17][18][19][20][21].…”

Section: Introductionmentioning

confidence: 99%

A Study on the Strengthening Performance of Concrete Beam by Fiber‐Reinforced Polyurea (FRPU) Reinforcement

Song

Lee

Eun

2020

Advances in Civil Engineering

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Polyurea coating helps improve the ductility and toughness of structural members. A fiber-reinforced polyurea (FRPU) composite provides high load-carrying capacity and is applied by simply spraying it onto the member surface. Unlike existing reinforcement approaches, the FRPU coating method can prevent the ductility of concrete beams from deteriorating and the concrete surface from debonding. In this study, 20 concrete beams were tested with respect to their load-carrying capacity and flexural ductility using polyurea or FRPU reinforcement. The test variables included the type of reinforcing fibers, coating thickness, and weight-to-content ratio of the fibers in the FRPU. Moreover, the load-carrying capacity and mechanical behavior of all specimens were compared according to the content of the steel fibers, milled glass fibers, or carbon nanotubes (CNTs). Specimens reinforced using polyurea or FRPU were confirmed to retain the load-carrying capacity and flexural ductility to a certain degree after concrete failure at the tension face of the midspan section. The concrete beams ultimately failed through the fracture of polyurea or FRPU without debonding. Experiments were conducted to illustrate the strengthening effect by FRPU and determine its superiority.

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Shear Strengthening of Reinforced Concrete Beams Using Carbon Fiber Reinforced Polymer Laminate: A Review

Cited by 13 publications

References 29 publications

Computational assessment regarding structural rehabilitation of a reinforced concrete decanter tank

Computational assessment regarding structural rehabilitation of a reinforced concrete decanter tank

Strengthening of Coupled Shear Walls – An overview

A Study on the Strengthening Performance of Concrete Beam by Fiber‐Reinforced Polyurea (FRPU) Reinforcement

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