Effect of fiber orientation on the structural behavior of FRP wrapped concrete cylinders

Li, Guoqiang; Maricherla, Dinesh; Singh, Kumar Vikram; Pang, Su‐Seng; John, Manu

doi:10.1016/j.compstruct.2005.05.001

Cited by 80 publications

(37 citation statements)

References 22 publications

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“…The effectiveness of hoop steel confinement was measured using a dimensionless parameter which was related to the amount of transverse reinforcement, the compressive strength of concrete and yield strength of transverse reinforcement. The results predicted by the model agreed well with large number of published results for both concentrically loaded columns and columns subjected to constant axial load and reversed cyclic flexure [5] .…”

Section: Introductionsupporting

confidence: 79%

Effect of Confinement on the Axial Performance of Fibre Reinforced Polymer Wrapped RC Column

Rajasekaran¹,

Raghunath²,

Suguna³

2008

American J. of Engineering and Applied Sciences

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Abstract:The combined effect of internal steel ties and external FRP wrap was investigated using nine reinforced concrete columns with varying thickness of external wrap. The load, deflection and lateral expansions were studied at yield state and ultimate state. The results from the experimental investigations were used for performing a multi-variate linear regression analysis incorporating the contribution of tie spacing as a term. The predictions of the regression equation agreed well with the experimental results and showed sensitive difference in compressive strength for changes in tie spacing.

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Section: Introductionsupporting

confidence: 79%

Effect of Confinement on the Axial Performance of Fibre Reinforced Polymer Wrapped RC Column

Rajasekaran¹,

Raghunath²,

Suguna³

2008

American J. of Engineering and Applied Sciences

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“…Although construction guidance is available for a better quality control of FRP products, manufacturing imperfections still happen in practice: (1) incompletely impregnated fibers will trap air bubbles in the laminates, (2) non-uniformly distribution of resin on fiber surface, (3) low compaction, poor fiber alignment and damaged fiber, and (4) unreliable control of resin cure. These factors induce residual strain and reduce the in-situ capacity of FRP materials [10]. Harries and Carey [11] had investigated the influence of adhesive bond on hoop rupture strain of FRP confining jacket, and it was observed that adhesive bond can reduce the value of FRP hoop rupture strain.…”

Section: A Frp Wrap and Tube Encasement Confinement Systemsmentioning

confidence: 99%

“…In their tubes, fibers in various directions and stacking sequences were utilized to provide both hoop confinement and axial reinforcement. Li et al [10] tested on the fifteen coupon specimens which were prepared to experimentally determine the tensile strength of the FRP with fibers oriented at 0°, 45°, and 90° from the loading direction, and co-axial compression tests were conducted on the wrapped cylinders and control cylinders. It was found that the strength, ductility, and failure mode of FRP wrapped concrete cylinders depend on the fiber orientation and thickness.…”

Section: A Frp Wrap and Tube Encasement Confinement Systemsmentioning

confidence: 99%

State-of-the-art Studies on the FRP-confined Concrete

Sun¹,

Luo²

2017

Proceedings of the 2016 International Conference on Architectural Engineering and Civil Engineering

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Abstract-The application of FRP in civil engineering has emerged as a popular method of column retrofitting and strengthening. Numerous experimental studies have proven that the confinement with FRP-wrap or tube encasement could enhance the strength, ductility and durability of concrete columns. The variation of each distinct experimental test result to its actual mean value is the general cause of modeling inaccuracy, and this appears to be a lack of consensus among the research community. This paper critically reviewed the current experimental studies with the emphasis on the revelation of the mechanical behavior of FRP-confined concrete and analytical study of its behavior. Lastly, some comments are made on the development trends of study on the mechanical behavior of FRP-confined concrete columns.

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“…However, there is no careful exams on the performance of these specimens compared to others in both of strength and ductility aspects. Li et al (2006) conducted an intensive experiment to study the effect of fibre orientation on the structural behaviour of FRP wrapped concrete cylinders. In their study, variety of fibre orientations and two different thicknesses were used to wrap concrete cylinders with a diameter of 152.4 mm and a height of 304.8 mm.…”

Section: Frp In Strengthening Columnsmentioning

confidence: 99%

Structural optimisation and reliability

2012

From Materials to Structures: Advancement Through Innovation

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This paper presents results of testing twelve hollow square reinforced concrete specimens wrapped with Carbon fibre reinforced polymer CFRP. The effect of ply configuration on the behaviour of the specimens is investigated. All specimens were 800 mm high and had the dimensions of 200 mm × 200 mm in cross-section and a hollow core of 80 mm × 80 mm. The specimens were divided into four groups with three specimens each. The specimens in the first group without bonding CFRP served as references. While the remaining three groups of specimens were externally wrapped with CFRP in three different ply configurations of hoop, vertical and 45• angle with reference to the circumferential direction, respectively. The specimens in each group were tested as columns under three eccentricities (0, 25, and 50 mm). Experimental results show that all types of wrap configuration increased the strength of reinforced concrete columns. The columns wrapped exclusively with hoop configuration proved to show the greatest ductility properties.

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Effect of fiber orientation on the structural behavior of FRP wrapped concrete cylinders

Cited by 80 publications

References 22 publications

Effect of Confinement on the Axial Performance of Fibre Reinforced Polymer Wrapped RC Column

Effect of Confinement on the Axial Performance of Fibre Reinforced Polymer Wrapped RC Column

State-of-the-art Studies on the FRP-confined Concrete

Structural optimisation and reliability

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