torsional strengthening of reinforced concrete beams

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Torsional strengthening of reinforced concrete beams with ...

2019-4-30  As discussed in Section 1, two different types of EB composites have been studied for torsional strengthening of RC beams: FRP composites, in which the fiber is bonded to the concrete substrate by an epoxy resin, and FRCM composites, in which the bonding agent between the fibers and the concrete substrate is a cementitious mortar.

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Torsional strengthening of reinforced concrete box beams ...

2007-4-1  In current practice, torsional strengthening of concrete members is achieved by one of the following methods : (1) increasing the member cross-sectional area combined with adding of transverse reinforcement, (2) using externally bonded steel plates and pressure grouting the gap between plate and concrete element, and (3) applying an axial load to the member by post-tensioning.

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Torsional Strengthening of Reinforced Concrete Beams

2021-2-2  Torsional Strengthening of Reinforced Concrete Beams Using CFRP Composites . by . Ranj Rafeeq . A thesis submitted in partial fulfillment of the . requirements for the degree of . Masters of Science . in . Civil and Environmental Engineering . Thesis Committee: Franz Rad, Chair Peter Dusicka Evan Kristof . Portland State University . 2016

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Torsional strengthening of reinforced concrete beams

2017-5-15  Torsional strengthening, or upgrading the torsional capacity, of reinforced concrete (RC) beams may be necessary due to factors such as increased service loading, structural damage or deterioration, and more stringent updates in building codes.

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TORSIONAL STRENGTHENING OF REINFORCED

The paper discusses an experimental investigation of the strengthening of the torsional resistance of reinforced concrete (RC) beams using fiber reinforced polymer (FRP) fabric. Eight beams were tested, with one designated as a control specimen while seven were strengthened using FRP wrapping of different configurations before they were tested.

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Torsional strengthening of reinforced concrete beams with ...

The use of externally bonded (EB) fiber reinforced composites to strengthen reinforced concrete (RC) structures has been explored extensively in recent decades. While many studies have been conducted on the flexural, shear, and axial strengthening of RC members, far fewer studies have been conducted on torsional strengthening.

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Torsional Strengthening of Reinforced Concrete Beams

The impacts of numerous important factors on the Energy Absorption (EA) of torsional Reinforced Concrete (RC) beams strengthened with external FRP is the main purpose and innovation of the current research. A total of 81 datasets were collected from previous studies, focused on the investigation of

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Torsional strengthening of reinforced concrete box beams ...

Torsional strengthening of members without steel stirrups was investigated in [11] and the use of GFRP bars as torsion reinforcement for L-shaped beams was assessed in [14].A few additional research studies have examined the influence of key parameters on the effectiveness of torsional strengthening solutions, including : strengthening layout (number of FRP plies [5], use of fully wrapped FRP ...

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(PDF) TORSIONAL STRENGTHENING OF REINFORCED

Many reinforced concrete (RC) buildings and bridge elements are subjected to significant torsional moments that affect the design, and may require repair and strengthening. Fiber Reinforced...

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(PDF) Torsional Strengthening of Reinforced Concrete

Torsional Strengthening of Reinforced Concrete Beams with Externally-Bonded Fibre Reinforced Polymer An Energy Absorption Evaluation.pdf 2553-6899-1-PB.pdf Content uploaded by Ali A. Abdulhameed

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Torsional strengthening of reinforced concrete beams with ...

The use of externally bonded (EB) fiber reinforced composites to strengthen reinforced concrete (RC) structures has been explored extensively in recent decades. While many studies have been conducted on the flexural, shear, and axial strengthening of RC members, far fewer studies have been conducted on torsional strengthening.

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TORSIONAL STRENGTHENING OF REINFORCED

The paper discusses an experimental investigation of the strengthening of the torsional resistance of reinforced concrete (RC) beams using fiber reinforced polymer (FRP) fabric. Eight beams were tested, with one designated as a control specimen while seven were strengthened using FRP wrapping of different configurations before they were tested.

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(PDF) Torsional Strengthening of Reinforced Concrete

‫‪TORSIONAL STRENGTHENING OF REINFORCED‬‬ ‫‪CONCRETE BEAMS USING CFRP SHEETS‬‬ ‫‪Mahmoud M. El-Kateb1, Amr A. Abdel Rahman2, Tarek K. Hassan3‬‬ ‫‪1‬‬ ‫‪Graduate student, 2 Professor, 3 Professor‬‬ ‫‪Structural engineering dept., Faculty of Engineering, Ain Shams University, Cairo, Egypt‬‬ ‫اﻟﻣﻠﺧص اﻟﻌرﺑﻰ‬ ‫ﻗد ...

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TORSIONAL STRENGTHENING OF REINFORCED ...

1 TORSIONAL STRENGTHENING OF REINFORCED CONCRETE BEAMS USING CFRP SHEETS Mahmoud M. El-Kateb1, Amr A. Abdel Rahman2, Tarek K. Hassan3 1 Graduate student, 2 Professor, 3 Professor Structural ...

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TORSIONAL STRENGTHENING OF UNDER REINFORCED

Similar to the flexure and shear strengthening, the FRC (Fiber Reinforced Concrete) also helps RC (Reinforced Concrete) members for torsion strengthening. Fiber Reinforced ConcreteFiber reinforced concrete is defined as a composite material consisting of mixtures of cement, mortar or concrete and discontinues discrete, uniformly dispersed ...

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Torsional Strengthening of RC Beams Using GFRP

2016-6-8  The reinforced concrete (RC) structural elements such as the peripheral beams in each floor of multi-storied buildings, ring beams at the bottom of circular tanks, edge beams of shell roofs, the beams supporting canopy slabs and the helical staircases are subjected to significant torsional

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Torsional Strengthening of RC Beams with Near-Surface ...

2020-3-18  The strength of reinforced concrete members can be enhanced by using the externally bonded reinforcement (EBR) and near-surface mounted (NSM) methods. However, very few studies have adopted the NSM method for torsional strengthening. Although previous studies have reported the efficacy of using epoxy-resin-bonded NSM steel bars in increasing the flexural and shear strength of RC beams

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Torsional Capacity of CFRP Strengthened Reinforced ...

The experimental program recounts an overall investigation of torsional strengthening of five rectangular reinforced concrete beams with externally bonded carbon fiber-reinforced polymer (CFRP ...

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STRENGTHENING OF REINFORCED CONCRETE BEAMS

2011-8-14  The use of fiber reinforced plastics (FRPs) for flexural and shear strengthening of reinforced concrete beams has been scrutinized to a considerable depth by researchers worldwide.

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Experimental and Numerical Investigation on Torsional ...

This paper reports the experimental work in an overall investigation of torsional strengthening of solid and box-section reinforced concrete beams with externally-bonded CFRP. This was found to be ...

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TORSIONAL STRENGTHENING OF UNDER REINFORCED

2019-4-21  torsional behaviour of steel fiber reinforced concrete has carried out. 1.1 Torsional Strengthening of Beams Early efforts for understanding the response of plain concrete subjected to pure torsion revealed that the material fails in tension rather than shear. Structural members curved

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TORSIONAL STRENGTHENING OF UNDER REINFORCED

The torsional moment and angle of twist has been studied of steel fiber reinforced concrete and normal reinforced concrete beams under pure torsion. The fraction of fibers added in the concrete varies from 0% to 1% by volume of concrete, in the regular interval of 0.25%. In this aspect ratio of steel fiber is

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Torsional Strengthening of RC Beams Using GFRP

2016-6-8  The reinforced concrete (RC) structural elements such as the peripheral beams in each floor of multi-storied buildings, ring beams at the bottom of circular tanks, edge beams of shell roofs, the beams supporting canopy slabs and the helical staircases are subjected to significant torsional

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Torsional Strengthening of RC Beams with Continuous

2020-2-21  The strength of reinforced concrete members can be enhanced using externally bonded reinforcement (EBR) and near surface mounted (NSM) methods. However, small number of studies has adopted the NSM method for torsional strengthening. To date, no study has examined the use of spiral NSM steel wire rope and epoxy adhesives for torsional strengthening. Therefore, this study examines

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Torsional Strengthening of Reinforced Concrete Beams

Torsional Strengthening of Reinforced Concrete Beams with Externally-Bonded Fibre Reinforced Polymer: An Energy Absorption Evaluation Mahir M. Hason a, Ammar N. Hanoon b, Ahmed W. Al Zand c*, Ali A. Abdulhameed b, Ali O. Al-Sulttani d a Disaster Management Centre, Ministry of Science and Technology, Iraq.

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Torsion Strengthening of RC Beams with External Lateral ...

2020-11-17  Ghobarah et al. studied the torsional behavior of strengthening reinforced concrete beams using various CFRP and GFRP wrapping configurations, it was concluded that the complete wrap of the torsion zone is far more effective in strengthening the torsional

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Torsional Capacity of CFRP Strengthened Reinforced ...

2007-2-1  Furthermore, available design tools are sparse and unproven. This paper briefly recounts the experimental work in an overall investigation of torsional strengthening of solid and box-section reinforced concrete beams with externally bonded carbon fiber-reinforced polymer (CFRP).

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Torsional Strengthening of Spandrel Beams with Fiber ...

Research has shown that fiber-reinforced polymer (FRP) composites can increase flexural, axial, and shear capacity of beams, columns, and walls. The present paper describes both experimental and analytical programs focused on the torsional strengthening of reinforced concrete spandrel beams using composite laminates.

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Experimental Investigation on Torsional Behavior of Solid ...

This paper reports the experimental work in an overall investigation of torsional strengthening of solid and box-section reinforced concrete beams with externally bonded carbon FRP. This was found to be a viable method of torsional strengthening. Photogrammetry was

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Strengthening of Corroded Reinforced SCC-RAP Members

The structural reliability of torsional concrete beams strengthened with full and strip wrapping of carbon fiber reinforced polymer (CFRP) laminate is investigated. The first order-second moment reliability method has been applied to make a reliability assessment on the torsional capacity design by

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