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reinforced concrete beams strengthened with cfrp

reinforced concrete beams strengthened with cfrp

Reinforced concrete beams strengthened with CFRP laminates ...

As previously mentioned, the experimental campaign consisted of a series of tests on reinforced concrete beams with the purpose of determining the effect of crack repair on reinforced concrete beams strengthened with CFRP laminates. These tests took place at the Laboratory of

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Reinforced concrete beams strengthened with basalt fibre ...

Oct 01, 2020  Hawileh et al. developed a non-linear FE model to predict the CFRP fabric debonding failure mode of reinforced concrete beams strengthened for shear with short length CFRP fabrics. The study was conducted on CFRP fabric with two different lengths (25% and 85%) of the shear span of the beams.

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Performance of reinforced concrete beams strengthened with ...

Oct 01, 2020  The test program consisted of seven reinforced concrete beams. Six beams were strengthened with different fibres, textile and laminate, using modified cement-based adhesive and epoxy at normal temperature. The beam dimensions were 140 mm wide, 260 mm deep, and 2700 long.

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Modeling of reinforced concrete beams strengthened in ...

Apr 01, 2016  Numerical studies of reinforced concrete (RC) beams strengthened in shear with Carbon Fiber Reinforced Polymer (CFRP) are the topic of this paper. The aim is to validate a numerical approach, which is based on the microplane model for concrete and polymer (matrix), and to better understand the stress distribution in CFRP when the concrete crack ...

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Reinforced concrete beams strengthened with CFRP

As previously mentioned, the experimental campaign consisted of a series of tests on reinforced concrete beams with the purpose of determining the effect of crack repair on reinforced concrete beams strengthened with CFRP laminates. These tests took place at the Laboratory of

get price

Reinforced concrete beams strengthened with basalt fibre ...

Oct 01, 2020  Hawileh et al. developed a non-linear FE model to predict the CFRP fabric debonding failure mode of reinforced concrete beams strengthened for shear with short length CFRP fabrics. The study was conducted on CFRP fabric with two different lengths (25% and 85%) of the shear span of the beams.

get price

Rectangular Reinforced Concrete Beams Strengthened with ...

Feb 27, 2013  Shear-deficient reinforced concrete (RC) structures can be effectively strengthened using external prestressed carbon fiber–reinforced polymer (CFRP) straps. Due to the presence of the external elastic straps, a strengthened beam can continue to carry significant load beyond the stages of crack plane slipping and internal-shear stirrup ...

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(PDF) Experimental and numerical investigation of RC beams ...

Jul 10, 2021  Seven rectangular RC beams were cast and strengthened through external bonding of carbon fiber-reinforced polymer (CFRP) sheets around the beam

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Rectangular Reinforced Concrete Beams Strengthened with ...

Lees 2011]. The behavior of a CFRP strap strengthened beam is therefore complex and consists of several transitions between different stages of behavior. The modified compression field theory (MCFT) developed by Vecchio Collins [1986] is a shear theory which incorporates the stress-strain relationships of reinforced concrete.

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Flexural Behavior of Reinforced Concrete Beams ...

evaluating the flexural capacity of reinforced concrete beams strengthened with CFRP sheets and epoxy mortar end anchorage is developed and provides a good prediction of test results. INTRODUCTION In the last decade, fiber reinforced polymer (FRP) composites have been used for strengthening reinforced concrete (RC) structural members.

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Size effect of reinforced concrete beams strengthened in ...

Therefore, this study examined the size effect of the shear capacity of concrete beams strengthened in shear with externally bonded carbon fiber reinforced polymer (CFRP) sheets through an experimental program consisting of six geometrically similar RC beams with three different effective depths.

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Flexural strengthening of reinforced concrete beams using ...

Five large-scale reinforced concrete beams were tested: one control, one strengthened with nonprestressed NSM CFRP bars, and three strengthened with NSM CFRP bars prestressed to 20%, 40%, and 60% of the ultimate strength of the CFRP. The flexural behavior of the prestressed concrete beams is compared with the nonprestressed beam and the control.

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Debonding Failure Analysis of Reinforced Concrete Beams ...

Aug 01, 2021  Reinforced concrete beams strengthened with CFRP plate have a 10% to 50% higher flexural capacity than unplated beams depending on the value of the tensile reinforcement ratio. Failures in reinforced concrete beams with small reinforcement ratios (1% and 1.5%) are debonding failures due to the delamination of CFRP plates.

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Durability of Reinforced Concrete Beams Externally ...

Apr 02, 2021  This paper addresses the durability of reinforced concrete beams strengthened with carbon fiber-reinforced polymer (CFRP) laminates under natural and saline environments in the Arabian Gulf. Beam specimens were conditioned under sunlight and saline water for 180, 360, and 730 days and tested under four-point bending until failure.

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Numerical Analysis of Reinforced Concrete Beam ...

The behaviour of reinforced concrete beam strengthened with Carbon Fiber Reinforced Polymer (CFRP) and Glass fiber reinforced polymer GFRP laminates was investigated using finite element models and the results are presented in this paper. The numerical investigation assessed the effect of the configuration of FRP strengthening laminates on the behaviour of concrete beams.

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Debonding Failure Analysis of Reinforced Concrete Beams ...

In this study, experimental work was carried out on reinforced concrete (RC) beams strengthened with carbon fiber reinforced polymers (CFRP) plates. This study aims to examine the effect of the reinforcement ratio on the flexural behavior of these beams and propose a new model for predicting the debonding moment. Six RC beams consisting of three control beams and three beams strengthened

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Flexural Behavior of Concrete Beam Strengthened by Near ...

J. Y. Kang, Y. H. Park, J. S. Park, Y. J. You, and W. T. Jung, “Analytical evaluation of RC beams strengthened with near surface mounted CFRP laminates,” in Proceedings of the 7th International Symposium on Fiber-Reinforced Polymer Reinforcement for Reinforced Concrete Structures (FRPRCS '05), November 2005. View at: Google Scholar

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Concrete Cover Separation in FRP-Plated RC Beams ...

Concrete cover separation is a common failure mode of RC beams strengthened with a fiber-reinforced polymer (FRP) plate externally bonded to the tension face (FRP-plated RC beams). This failure mode initiates at the critical plate end and then propagates at the level of steel tension reinforcement in the direction of increasing moment.

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Rectangular Reinforced Concrete Beams Strengthened with ...

Feb 27, 2013  Shear-deficient reinforced concrete (RC) structures can be effectively strengthened using external prestressed carbon fiber–reinforced polymer (CFRP) straps. Due to the presence of the external elastic straps, a strengthened beam can continue to carry significant load beyond the stages of crack plane slipping and internal-shear stirrup ...

get price

Reinforced concrete beams strengthened with CFRP laminate ...

Reinforced concrete beams strengthened with CFRP laminate and CFRP sheets. The final scheme is that all the beams of the building are strengthened by carbon fiber reinforced polymer (CFRP) laminates, and the inclined section is strengthened by carbon fiber reinforced polymer (CFRP) sheets.

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(PDF) Experimental and numerical investigation of RC beams ...

Jul 10, 2021  Seven rectangular RC beams were cast and strengthened through external bonding of carbon fiber-reinforced polymer (CFRP) sheets around the beam

get price

Rectangular Reinforced Concrete Beams Strengthened with ...

Lees 2011]. The behavior of a CFRP strap strengthened beam is therefore complex and consists of several transitions between different stages of behavior. The modified compression field theory (MCFT) developed by Vecchio Collins [1986] is a shear theory which incorporates the stress-strain relationships of reinforced concrete.

get price

Article Debonding Failure Analysis of Reinforced Concrete ...

Jul 29, 2021  Article Debonding Failure Analysis of Reinforced Concrete Beams Strengthened with CFRP Plates Rendy Thamrin 1*, Zaidir 1 and Silvy Desharma 2 1Department of Civil Engineering, Faculty of Engineering, Andalas University,Padang, 25163, West Sumatera, Indonesia 2Graduate Student at Department of Civil Engineering, Faculty of Engineering, Andalas University

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Size Effects for Reinforced Concrete Beams Strengthened in ...

Jun 03, 2010  The numerical model is able to simulate the characteristics of the shear-strengthened beams, including the interfacial behavior between the concrete and the CFRP sheets. Three prediction models available in current design guidelines for computing the CFRP effective strain and shear contribution to the shear capacity of the CFRP shear ...

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Research Article Strengthening Reinforced Concrete Beams ...

Concrete beams were strengthened by wrapping the shear edges of the beams twice at in opposite directions by either carbon ber reinforced polymer (CFRP) or glass ber reinforced poly mer (GFRP). e study included CFRP wrapped beams, GFRP wrapped beams, and control beams, all of which were × × mm and manufactured with C concrete and Sa

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Study on reinforced concrete beams strengthened using ...

Oct 26, 2007  Shahawy M A, Arockiasamy M, Beitelman T and Sowrirajan R 1996a Reinforced concrete rectangular beams strengthened with CFRP laminates Composites B 27B 225-33 Crossref Shahawy M A, Beitelman T, Arockiasamy M and Sowrirajan R 1996b Experimental investigation on structural repair and strengthening of damaged prestressed concrete slabs utilizing ...

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Parametric Study of Flexural Strengthening of Concrete ...

Nov 18, 2019  Chen et al. compared the flexural fatigue properties of RC (Reinforced Concrete) beams strengthened with carbon/glass hybrid FRP, carbon/basalt fiber hybrid FRP, and BFRP (Basalt Fiber Reinforced Polymer), and the results showed that the fatigue life of the beam strengthened with carbon/glass hybrid FRP was the longest.

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Efficiency of EB CFRP composites for flexural ...

Fig. 2 and Table 1 show the strengthening layout, specimen designations, and details of the control and strengthened beams with EB-CFRP composites. The position of the CFRP reinforcement (either bottom/top or side), the CFRP composite form (either sheet or plate), the CFRP layer number, and the weight of the CFRP sheet were the main variables investigated for this experimental program.

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(PDF) Flexural performance of CFRP strengthened RC beams ...

May 04, 2011  In this study, experimental work was carried out on reinforced concrete (RC) beams strengthened with carbon fiber reinforced polymers (CFRP) plates.

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Debonding Failure Analysis of Reinforced Concrete Beams ...

In this study, experimental work was carried out on reinforced concrete (RC) beams strengthened with carbon fiber reinforced polymers (CFRP) plates. This study aims to examine the effect of the reinforcement ratio on the flexural behavior of these beams and propose a new model for predicting the debonding moment. Six RC beams consisting of three control beams and three beams strengthened

get price

Flexural Behavior of Concrete Beam Strengthened by Near ...

J. Y. Kang, Y. H. Park, J. S. Park, Y. J. You, and W. T. Jung, “Analytical evaluation of RC beams strengthened with near surface mounted CFRP laminates,” in Proceedings of the 7th International Symposium on Fiber-Reinforced Polymer Reinforcement for Reinforced Concrete Structures (FRPRCS '05), November 2005. View at: Google Scholar

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Debonding Failure Analysis of Reinforced Concrete Beams ...

Aug 16, 2021  strengthening of reinforced concrete beams by externally attaching CFRP plates to the tensile surface were collected, providing a database of 60 experimental beam

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