Model of Concrete Confined by Fiber Composites

Samaan, Michel; Mirmiran, Amir; Shahawy, Mohsen

doi:10.1061/(asce)0733-9445(1998)124:9(1025)

Cited by 722 publications

(390 citation statements)

References 11 publications

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“…The stress-strain behaviour of confined concrete proposed by Samaan et al [50] has been adopted in this study to model the behaviour of confined concrete core.…”

Section: Confined Concretementioning

confidence: 99%

Axial load-axial deformation behaviour of circular concrete columns reinforced with GFRP bars and helices

Karim

Sheikh

Hadi

2016

Construction and Building Materials

120

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Fibre Reinforced Polymer (FRP) bars has attracted a significant amount of research attention in the last three decades to overcome the problems associated with the corrosion of steel reinforcing bars in reinforced concrete members. A limited number of studies, however, have investigated the behaviour of concrete columns reinforced with FRP bars. Also, available design standards either ignore the contribution of or do not recommend the use of GFRP bars in compression members. This study reports the results of experimental investigations of concrete specimens reinforced with GFRP bars and GFRP helices as longitudinal and transverse reinforcement, respectively. A total of five circular concrete columns of 205 mm in diameter and 800 mm in height were cast and tested under axial compression. The experimental results showed that reducing the spacing of the GFRP helices or confining the specimens with CFRP sheet led to improvements in the strength and ductility of the specimens. Also, an analytical model has been developed for the axial loadaxial deformation behaviour of the circular concrete columns reinforced with GFRP bars and helices. The model has been validated with the experimental results.

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“…The stress-strain behaviour of confined concrete proposed by Samaan et al [50] has been adopted in this study to model the behaviour of confined concrete core.…”

Section: Confined Concretementioning

confidence: 99%

Axial load-axial deformation behaviour of circular concrete columns reinforced with GFRP bars and helices

Karim

Sheikh

Hadi

2016

Construction and Building Materials

120

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“…This is considered in the analysis of the flexural behaviour of the concrete filled GFRP tubes. The existing design-oriented stress-strain models for FRPconfined concrete typically followed a bilinear stress-strain curve [31][32][33]. The bilinear curve consists of a parabolic ascending branch followed by straight line to describe both the ascending and descending branches of the stress-strain curves of confined concrete [34,35].…”

Section: )mentioning

confidence: 99%

Influence of infill concrete strength on the flexural behaviour of pultruded GFRP square beams

Muttashar

Manalo

Karunasena

et al. 2016

Composite Structures

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This paper presents experimental and analytical studies on the effect of the compressive strength of the concrete infill on the flexural behaviour of composite beams. Hollow pultruded Glass Fibre Reinforced Polymer (GFRP) square beams (125 mm x125 mm x 6.5 mm) filled with concrete having 10, 37 and 43.5 MPa compressive strength were tested under static four-point bending. The results indicate that filled GFRP beams failed at a load 100 to 141% higher than hollow beams and showed 25% increase in stiffness. However, the increase in concrete compressive strength from 10 to 43.5 MPa increased the ultimate load by only 19% but exhibited almost the same flexural stiffness indicating that a low strength concrete is a practical solution to fill the GFRP profiles to be used as beam applications. Moreover, the concrete infill prevented the premature buckling and web crushing of the GFRP tube. The maximum strain measured at failure is similar to the compressive strain determined from the coupon test indicating the effective utilisation of the GFRP material. Finally, Fibre Model Analysis which considered the partial confined stress -strain curve for the concrete infill gave an accurate prediction of the flexural behaviour of the concrete filled GFRP sections.

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“…Several analytical models for the stress-strain relationship of FRP confined concrete subjected to axial compression have been developed in literature [11][12][13][14][15][16]. Two stress-strain models for FRP confined concrete [17,18] were also implemented in the open-source platform OpenSees [19].…”

Section: Introductionmentioning

confidence: 99%

Behavior of CFRP Confined Rc Columns Under Axial Load and Uniaxial Cyclic Lateral Loading

Zoppo¹,

Ludovico²,

Balsamo³

et al. 2017

Proceedings of the 6th International Conference on Computational Methods in Structural Dynamics and Earthquake Engineering (COM

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Model of Concrete Confined by Fiber Composites

Cited by 722 publications

References 11 publications

Axial load-axial deformation behaviour of circular concrete columns reinforced with GFRP bars and helices

Axial load-axial deformation behaviour of circular concrete columns reinforced with GFRP bars and helices

Influence of infill concrete strength on the flexural behaviour of pultruded GFRP square beams

Behavior of CFRP Confined Rc Columns Under Axial Load and Uniaxial Cyclic Lateral Loading

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