torsional design of cfrp strengthening fibre

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Torsional Capacity of CFRP Strengthened Reinforced Concrete

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

Torsional design of CFRP strengthening

Torsional design of CFRP strengthening - Free download as PDF File (.pdf), Text File (.txt) or read online for free.

Carbon Fiber 101: What do Isotropic, Quasi-Isotropic, and

When working with carbon fiber, which is known for its remarkable strength and stiffness to weight ratio, one needs to understand how fiber orientation factors into the strength and stiffness of a carbon fiber reinforced plastic (CFRP) laminate. There are different approaches to laminate design for composite panels, the laminates of which are ...

Analytical Study on the Torsional Behavior of Reinforced Concrete

In this study, an analytical approach was used to predict the full torsional response of RC beams strengthened with externally bonded fiber-reinforced cementitious matrix (FRCM) composite. The analytical model was based on the softened membrane model for ...

The case for carbon fibre | Article

The launch of the i3 has changed the conversation about the future application of carbon fibre in vehicle structures. Champagne corks popped in Leipzig in October 2017 as BMW celebrated the manufacture of its 100,000th i3, which features a monocoque made from light and stiff, but expensive, carbon fibre-reinforced plastic (CFRP).

IRJET- Strengthening of Reinforced Concrete Beams using Fiber

Jul 08, 2019 · C. E. Chalioris[9] investigate the torsional strengthening of concrete beamswithoutstirrupsusingepoxy-bondedcarbon fibre-reinforced-polymer (FRP) sheets and strips as external transverse reinforcement.Theexperimental programcomprises 14 rectangular and T-shaped beams tested under pure torsion.

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on Torsional Strengthening of Solid and Box-section RC Beams Using CFRP Laminates. Composites Structures, v. 75, n. 1 p.213-221, set. 2006.a. HII, A. K. Y.; AL-MAHAIDI, R. Experimental Investigation on Torsional Behavior of Solid and Box-Section RC Beams Strengthened with CFRP Usingb Photogrammetry.

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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 ...

Experimental and theoretical investigation on torsional behaviour

CFRP significantly increases the torsion capacity of square hollow sections (SHS). • Combined spiral and reverse-spiral wraps gives the best strengthening efficiency. Carbon fibre reinforced polymer (CFRP) has been used to strengthen steel members in bending ...

Bond behaviour of CFRP reinforcement for torsional

Jul 01, 2007 · Read "Bond behaviour of CFRP reinforcement for torsional strengthening of solid and box-section RC beams, Composites Part B: Engineering" on DeepDyve, the largest online rental service for scholarly research with thousands of academic publications available at your fingertips.


The most common way to strengthen structures with advanced composites has been for bending but strengthening for shear, torsion and axial loads is also often needed. However, there are very few examples presented in the literature for concrete structures strengthened with CFRP in torsion, which may indicate that this is a minor problem.


The paper presents mainly theory but also laboratory tests. It is shown that strengthening a structure for torsion is possible, but theoretically complicated and it is of utmost importance that the CFRP sheets or laminate are


16th International Conference on Composite Structures ICCS 16 A. J. M. Ferreira (Editor) FEUP, Porto, 2011 TORSIONAL BEHAVIOR OF PRESTRESSED CONCRETE BEAMS STRENGTHENED WITH CFRP SHEETS Mohamed N. Mahmood * and Akram Sh.

Torsional retrofit of spandrel beams with composite laminates

This paper describes the experimental and analytical findings of a project focused on the structural strengthening of reinforced concrete (RC) spandrel beams using carbon fibre reinforced polymer (CFRP) composite laminates, and subjected to pure torsion. Many current torsional strengthening and repair methods are time and resource intensive and ...

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The Use of Fiber Reinforced Plastic for The Repair and

For this strengthening scheme it was planned to make use of a certain type of Carbon Fiber Reinforcing Plastic laminates (CFRP) with a cross-section 50mm x 1.2mm. These laminates could be applied in-situ either on the upper or lower surface of the concrete slabs with the use of a special epoxy paste.

Constructed Facilities Laboratory Department of

Constructed Facilities Laboratory Department of Civil, Construction, and Environmental Engineering DESIGN GUIDELINES FOR THE USE OF HM STRIPS: STRENGTHENING OF STEEL CONCRETE COMPOSITE BRIDGES WITH HIGH MODULUS ...

Advances in FRP Composites in Civil Engineering

"Advances in FRP Composites in Civil Engineering" contains the papers presented at the 5th International Conference on Fiber Reinforced Polymer (FRP) Composites in Civil Engineering in 2010, which is an official conference of the International Institute for FRP in Construction (IIFC).

Reinforced Concrete Beams Strengthened with NSM CFRP

2015/11/01 · Abstract Shear strengthening of reinforced concrete (RC) elements with fibre reinforced polymer (FRP) composites is actually a research topic far to be completely solved. Existing shear strength models lead sometimes to overly

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Torsional Strengthening of RC beams using Hybrid CFRP-BFRP

polymer (CFRP) and glass fibre reinforced polymer (GFRP) as external retrofit can increase the torsional capacity of the RC beams. CFRP sheets are better than GFRP sheets in resisting torsion [4,6,9]. Full wrapping of the beams is more advantageous in terms of increase in torsional capacity than strip wrapping.

Improving torsional behaviour of reinforced concrete

Abstract Three groups of rectangular beams, comprising of sixteen specimens with various amounts of torsional steel reinforcement were tested under pure torsion. Topics: Carbon fibre reinforced polymers (CFRP), Steel reinforcement ratio, Reinforced concrete, Strengthening, Torsional, C1, 870299 Construction Design not elsewhere classified, …

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Torsional Behaviour of High-Strength Concrete Beams

Torsional Behaviour of High-Strength Concrete Beams Strengthened Using CFRP Sheets; an Experimental and Analytical Study M.R. Mohammadizadeh1; and M.J. Fadaee1 Abstract. An experimental investigation of the strengthening of the torsional resistance of High-Strength Concrete (HSC) beams using Carbon-Fiber-Reinforced-Polymers (CFRP) is conducted ...

Design of Concrete Bridge Beams Prestressed with CFRP Systems

Unfortunately, this book can't be printed from the OpenBook. If you need to print pages from this book, we recommend downloading it as a PDF. Visit to get more information about this book, to buy it in print, or to download it as a free PDF. Below is …

Repair slab-column connections using CFRP

Repair of slab-column connections using CFRP I.N. Robertson, G. Johnson Department of Civil Engineering, University of Hawaii, USA Abstract Repair, strengthening and retrofit of reinforced and prestressed concrete members have become increasingly important issues as the World's infra- structure deteriorates with time.

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