Compressive Behavior of Concrete Confined by Carbon Fiber Composite Jackets

Xiao, Yan; Wu, Hong

doi:10.1061/(asce)0899-1561(2000)12:2(139)

Cited by 649 publications

(260 citation statements)

References 6 publications

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“…[3,4,8,9,11,[15][16][17][18][19][20][21][22][23][24][25]). Several causes have been given for the observed differences between hoop rupture strains and material ultimate tensile strains, including: (i) the quality of workmanship; (ii) overlaps of fiber sheets in the FRP shell; (iii) manufacturing imperfections (e.g., misalignment of fibers); (iv) shrinkage of the concrete (for FRP tube-encased concrete); (v) localized or non-uniform effects caused by imperfections in FRP shells and/or heterogeneity of cracked concrete; (vi) load eccentricities caused by specimen imperfections and/or test setup imprecisions; (vii) multiaxial stress condition generated on the FRP shell; and (viii) effect of the curvature of the FRP shell.…”

Section: Eqmentioning

confidence: 99%

Axial compressive behavior of FRP-confined concrete: Experimental test database and a new design-oriented model

Ozbakkaloglu

Lim

2013

Composites Part B: Engineering

329

131

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Section: Eqmentioning

confidence: 99%

Axial compressive behavior of FRP-confined concrete: Experimental test database and a new design-oriented model

Ozbakkaloglu

Lim

2013

Composites Part B: Engineering

329

131

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“…Most of these studies have proven the ability of this system to take advantage of the confinement provided by the composite shell to the concrete core and the linear elastic nature of the composite section. Similar research has been conducted to investigate the confinement effect of FRP composite on the concrete core [12,13]. These researches showed that FRP confinement has a significant effect on the behaviour of concrete under axial compression.…”

Section: Generalmentioning

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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“…To estimate the ultimate strength of reinforced concrete elements confined with FRP, several relationships can be found in literature [25], [27]. They are based on the preliminary evaluation of the ultimate lateral confining pressure, and on the assumption that concrete collapse occurs when FRP layers reach their ultimate stress [28]- [37]. A large comparison of this constitutive models is reported in [38]- [39] while in this paper reference is made to unreinforced sections only.…”

Section: Review Of Confined Concrete Modelsmentioning

confidence: 99%