torsional design of cfrp strengthening fibre


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


detect experimentally the CFRP strengthening technique for continuous RC beams exposed to pure torsion. The experimental program includes investigation of two groups of beams; the first group was composed of twelve un-strengthened beam

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Steel Strengthening Fibre Composites Elyas Ghafoori 7 Strengthening of Metallic Members using CFRP Laminates Elyas Ghafoori Dr. sc. ETH Zürich, M.Sc. EPFL Leader of “Sustainable Metallic Structures (SUMS)” group & Lecturer at ETH Zürich Empa, Swiss Federal Laboratories for Materials Science and Technology

Evaluation of Torsional Capacity of Square RC Columns

Also, as a reinforcing method to existing RC structures, the application of Carbon Fiber Reinforced Polymers (CFRP) became common. CFRP has properties of high tensile strength, light weight and easy execution. CFRP is easy to adjust the reinforcement volume whenever necessary and considered excellent in endurance because the rust will not occur.

hollow steel beams, strengthening, CFRP, finite element

In recent years, strengthening of steel square hollow sections (SHS) using carbon fiber reinforced polymer (CFRP) has attracted the attention of many researchers. Most of the previous research in this field has been done on the behavior of steel members without deficiency in bending, shear, and compression strengthened using CFRP composite.

15.2.2018. Behaviour of prestressed box beam strengthened 10

The wrapping configuration for flexural, shear, and torsional strengthening is shown in Figure 3, as based on calculation of the box beam strengthening with CFRP. Four Sika CarboDur XS514, 2 m in length, are located at the soffit of the beam, and nine Sika CarboDur XS514 are wrapped at 200 mm centre to centre.

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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).

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investigations show that the method is very effective and a considerable strengthening effect can be achieved At Luleå University of Technology, research is taking place in the field of CFRP-Strengthening, i.e., the process of strengthening concrete members by bonding CFRP (Fibre Reinforced Polymer) plates or sheets to their surfaces.

Comparative Investigation on Torsional Behaviour of RC

Many researchers worldwide have extensively used fibre-reinforced polymer (FRP) strengthening materials and near-surface mounted (NSM) to enhance the shear and flexural strengths of reinforced concrete (RC) beams. However, studies on torsional strengthening are limited. Although a few studies have focused on torsional strengthening…

Experimental and theoretical investigation on torsional

Jul 01, 2013 · Read "Experimental and theoretical investigation on torsional behaviour of CFRP strengthened square hollow steel section, Thin-Walled Structures" on DeepDyve, the largest online rental service for scholarly research with thousands of academic publications available at your fingertips.

Journal Articles « Lab for Advanced Engineering Materials and

Torsional strengthening of steel circular hollow sections (CHS) using CFRP composites, Engineering Structures 2018, 171: 806-816. [30] Yang Peng, Chao Wu, Jieliang Gan, Jun Dong. Determination of the local constitutive properties of the welded steel joints using digital image correlation method, Construction and Building Materials 2018, 171 ...

Read "Design of Concrete Bridge Beams Prestressed with CFRP

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 the uncorrected machine-read text ...


Over the past two decades, carbon fibre reinforced polymer (CFRP) has been used widely among other FRP materials for strengthening of steel structures. In comparison to other commonly used FRP materials, CFRP is prevalent primarily because of its relatively high stiffness. CFRP laminates for application with

Torsional Capacity of CFRP Strengthened Reinforced

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

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Behavior of Deficient Steel Members Strengthened

2018/06/01 · Strengthening steel structures using carbon fiber reinforced polymer (CFRP) has attracted the attention of many researchers in recent years. Most previous research in this area has carried out on the behavior of the steel ...

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

Comparative Study on Torsional Strengthening of RC beams

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.


Anchorage type 3 is intended for use where combined shear and torsional strengthening is a requirement and utilised a unidirectional fibre orientation applied parallel to the direction of the laminate. In order to develop the tensile stresses, full wrapping of the concrete section is usually required for torsional strengthening.

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Energy Absorption Evaluation of CFRP-Strengthened Two-Spans

Flexural and shear behaviors, ductility, and confinement were the main studied properties that used the CFRP as a strengthening material. However, limited attention has been paid to investigate the energy absorption of torsion strengthening of concrete members, especially two-span concrete beams.


overall investigation of torsional strengthening of solid and box-section reinforced concrete beams with externally bonded carbon fibre-reinforced polymer (CFRP). Ameli and Ronagh (2007) experimentally investigated together with a numerical study on reinforced concrete beams subjected to torsion that are strengthened with FRP wraps in a variety

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Exploring NSM technique for torsional strengthening of

Mounted (NSM) technique for the torsional strengthening of thin walled tubular type reinforced con-crete (RC) elements. According to this technique, fibre reinforced polymer (FRP) laminates are intro-duced into thin grooves opened on the concrete cover of the RC elements. A 3D multidirectional

Amr Ali Abdelrahman Profile

6. “torsional strengthening of reinforced concrete beams using cfrp sheets”, mahmoud m. el-kateb, amr a. abdel rahman, tarek k. hassan, journal of al-azhar university engineering sector, al-azhar university, volume 35, no. 2, april 2013 7.

Experimental Investigation on the Torsional Behavior of CFRP

Experimental Investigation on the Torsional Behavior of CFRP Strengthened Square Hollow Steel Sections This paper presented a study on the behavior of carbon-fiber-reinforced-polymer (CFRP) strengthened steel beam specimens with square hollow section (SHS ...

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torsional design of cfrp strengthening fibre belt conveyor yhzs35 35m3 h mobile concrete plant with ce