Axial Load Capacity of Concrete-Filled FRP Tube Columns: Experimental versus Theoretical Predictions

Mohamed, Hamdy M.; Masmoudi, Radhouane

doi:10.1061/(asce)cc.1943-5614.0000066

Cited by 119 publications

(34 citation statements)

References 17 publications

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“…(1) which have been based either on tests of plain concrete specimens or reinforced concrete columns. Most of these models used a constant value for k 1 and it was limited to between 2 and 5 [6,12,18,35] Moreover, other researchers expressed k 1 in a non-linear form [14,[26][27][28].…”

Section: Effect Of Concrete Strength Typementioning

confidence: 99%

Behaviour of FRP Confined Concrete Cylinders: Experimental Investigation and Strength Model

Touhari

Mitiche-Kettab

2016

Period. Polytech. Civil Eng.

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IntroductionFibre-reinforced polymer and Fibre-reinforced plastic (FRP) are composites materials made of a polymer and plastic matrix, respectively, reinforced with fibres. The fibres are usually glass, carbon, or aramid, although other fibres such as paper or wood or asbestos have been sometimes used. The polymer is usually an epoxy or vinylester giving a flexible form whereas the plastic is usually polyester thermosetting plastic giving a hard form. Fiber Reinforced Polymer (FRP) and Fibre-reinforced plastics materials have emerged to be one of the most promising construction materials for reinforcement of concrete members in the last four decades. High tensile strength, High strength-toweight ratio, linear elastic behaviour to failure, unaffected by aggressive environmental conditions, good corrosion resistant properties, minimal effect on shape and size of existing member, non-magnetic and non-conductive and design flexibility are some of the appealing characteristics of FRP materials. Several experimental studies have been principally conducted for estimating the axial strength and stress-strain behaviour of FRP circular confined concrete columns [16,37,38]. These studies have investigated most of the critical parameters as the type of FRP material (carbon, aramid, glass, ect.) [32] and its thickness [12], the influence of unconfined concrete strength [10] and the shape of the specimens [17]. Bouchelaghem et all [2] developed a new axial compression technique, consisting in sequential loading of the same sample, with the first load step terminated prior to failure of the column. Ozbakkaloglu [8] presented results of the critical column parameters on the compressive behaviour of CFRP. Furthermore, several models have been developed to predict the strength and strain enhancement of FRP confined concrete columns. Mender et al. [36] proposed a model for concrete confined by transverse steel. Saadatmanesh et al. [30] used the stress-strain model proposed by Mander et al. [27] to analyse the behaviour of concrete columns externally wrapped with FRP composite straps. The model is used to assess the gain in strength and ductility of concrete columns confined by FRP materials. Mirmiran et al. [21] indicated how FRP materials significantly enhance the strength, ductility and durability of concrete columns, this new confinement model was pro-

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Section: Effect Of Concrete Strength Typementioning

confidence: 99%

Behaviour of FRP Confined Concrete Cylinders: Experimental Investigation and Strength Model

Touhari

Mitiche-Kettab

2016

Period. Polytech. Civil Eng.

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“…A number of such studies have been reported in the literature. However, the majority of these studies have been concerned with circular CFFTs (Mastrapa 1997;Saafi et al 1999;Tegola and Manni 1999;Mirmiran et al 2001;Moss 2001;Mandal et al 2005;Zhu et al 2005;Li 2006;Mohamed and Masmoudi 2010;Park et al 2011), and only a few studies have investigated the axial compressive behavior of square and rectangular CFFTs Hong and Kim 2004;Fam et al 2005;Ozbakkaloglu and Oehlers 2008a).…”

Section: Introductionmentioning

confidence: 99%

Axial Compressive Behavior of Square and Rectangular High-Strength Concrete-Filled FRP Tubes

Ozbakkaloglu

2013

J. Compos. Constr.

142

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This paper presents results of an experimental study on the behavior of square and rectangular high-strength concrete (HSC)-filled fiber reinforced polymer (FRP) tubes (HSCFFTs) under concentric compression. The effects of the tube thickness, sectional aspect ratio and corner radius on the axial compressive behavior of concrete-filled FRP tubes (CFFTs) were investigated experimentally through the tests of 24 CFFTs that were manufactured using unidirectional carbon fiber sheets and high-strength concrete (HSC) with 78 MPa average compressive strength. As the first experimental investigation on the axial compressive behavior of square and rectangular HSCFFTs, the results of the study reported herein allows a number of significant conclusions to be drawn. First and foremost, test results indicate that sufficiently confined square and rectangular HSCFFTs can exhibit highly ductile behavior. The results also indicate that confinement effectiveness of FRP tubes increases with an increase in corner radius and decreases with an increase in sectional aspect ratio. It is also observed and discussed that HSCFFTs having tubes of low confinement effectiveness may experience a significant strength loss at the point of transition on their stress-strain curves. Furthermore, it is found that the behavior of HSCFFTs at this region differ from that of normal-strength CFFTs and it is more sensitive to the effectiveness of confining tube. Examination of the test results have also lead to a number of important observations on the influence of the key confinement parameters on the development and distribution of the hoop strains on the tubes of CFFTs, which are presented and discussed in the paper.

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“…The majority of the studies reported in the literature on the compressive behavior of CFFTs have been concerned with circular CFFTs [24][25][26][27][28][29][30][31][32][33], and only a few studies have investigated the axial compressive behavior of square and rectangular CFFTs [11][12][13][14][15][16]34].…”

Section: Introductionmentioning

confidence: 99%

Behavior of square and rectangular ultra high-strength concrete-filled FRP tubes under axial compression

Ozbakkaloglu

2013

Composites Part B: Engineering

141

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Axial Load Capacity of Concrete-Filled FRP Tube Columns: Experimental versus Theoretical Predictions

Cited by 119 publications

References 17 publications

Behaviour of FRP Confined Concrete Cylinders: Experimental Investigation and Strength Model

Behaviour of FRP Confined Concrete Cylinders: Experimental Investigation and Strength Model

Axial Compressive Behavior of Square and Rectangular High-Strength Concrete-Filled FRP Tubes

Behavior of square and rectangular ultra high-strength concrete-filled FRP tubes under axial compression

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