Journal ArticleDOI
Behavior of normal and high-strength concrete cylinders confined with E-glass/epoxy composite laminates
TLDR
In this paper, the behavior of concrete cylinders with varying compressive strength wrapped with E-glass/epoxy fiber reinforced polymer (GFRP) jackets and subjected to uniaxial compressive loads was investigated.Abstract:
This paper is aimed at studying the behavior of concrete cylinders with varying compressive strength wrapped with E-glass/epoxy fiber reinforced polymer (GFRP) jackets and subjected to uniaxial compressive loads. A comprehensive experimental program which involves 54 plain concrete cylinders was conducted in this study. The cylinders evaluated in this study, were divided into six groups, and each group contain a control cylinder without confinement to quantify the amount of gain obtained using the GFRP laminates. Experimental results indicated that the use of GFRP jackets substantially increases both the compressive strength and ductility of unreinforced concrete cylinders. In this paper, the influences of two parameters influencing the behavior of the GFRP confined cylinder is investigated. These parameters are: the number of composite plies (i.e. composite thickness) and concrete compressive strength. The results of this study showed that: (i) compressive strength and ductility of the concrete cylinders increases with number of composite layers; and (ii) effect of confinement is substantial for normal strength concrete and marginal for high-strength concrete. A semi-empirical theoretical model is also presented in order to predict stress–strain relationship of GFRP confined concrete cylinders. The model results showed an excellent agreement with experimental values.read more
Citations
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Journal ArticleDOI
Axial compressive behavior of FRP-confined concrete: Experimental test database and a new design-oriented model
Togay Ozbakkaloglu,Jian C. Lim +1 more
TL;DR: In this article, the authors present a comprehensive test database constructed from the results of axial compression tests on 832 circular FRP-confined concrete specimens published in the literature.
Journal ArticleDOI
Unified stress–strain model of concrete for FRP-confined columns
Youyi Wei,Yu-Fei Wu +1 more
TL;DR: In this paper, a unified stress-strain model of concrete for circular, square, and rectangular columns confined by fiber-reinforced polymer (FRP) jackets is presented.
Journal ArticleDOI
Behavior of FRP-Confined Normal- and High-Strength Concrete under Cyclic Axial Compression
Togay Ozbakkaloglu,Emre Akın +1 more
TL;DR: In this article, an experimental study on the behavior of FRP-confined normal-and high-strength concrete under axial compression is presented, and a discussion is provided on the influence of the main test parameters in the observed behaviors.
Journal ArticleDOI
Influence of concrete strength and confinement method on axial compressive behavior of FRP confined high- and ultra high-strength concrete
TL;DR: In this article, the effect of concrete compressive strength and confinement method on confined high and ultra high-strength concrete (HSC and UHSC) specimens was investigated under monotonic axial compression.
Journal ArticleDOI
Compressive behavior of concrete-filled FRP tube columns: Assessment of critical column parameters
TL;DR: In this article, a comprehensive experimental program has been underway at the Structures Laboratory of the University of Adelaide to investigate the behavior of concrete-filled fiber-reinforced polymer (FRP) tubes (CFFTs) under concentric compression.
References
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Journal ArticleDOI
Design-oriented stress–strain model for FRP-confined concrete
Linda Lam,Jinguang Teng +1 more
TL;DR: In this paper, a new design-oriented stress-strain model is proposed for concrete confined by FRP wraps with fibres only or predominantly in the hoop direction based on a careful interpretation of existing test data and observations.
Performance and application of a design-oriented stress-strain model for FRP-confined concrete
X.F. Yuan,L. Lam,Jinguang Teng +2 more
Journal ArticleDOI
Strength and ductility of concrete columns externally reinforced with fiber composite straps
TL;DR: In this article, a new technique for seismic strengthening of concrete columns is presented, which requires wrapping thin, flexible high-strength fiber composite straps around the column to improve the column's ductility and strength.
Journal ArticleDOI
Behavior of concrete columns confined with fiber reinforced polymer tubes
TL;DR: In this paper, the performance of concrete columns conbined with carbon and glass FRP composite tubes was evaluated under uniaxial compressive load and showed that external confinement of concrete by FRP tubes can significantly enhance the strength, ductility, and energy absorption capacity of concrete.
Journal ArticleDOI
Composite jacketed concrete under uniaxial compression--verification of simple design equations
Vistasp M. Karbhari,Yanqiang Gao +1 more
TL;DR: In this paper, the authors developed experimental data, based on a variety of reinforcing fiber types, orientations and jacket thickness, and developed and/or verified simple design equations to estimate the response of composite confined concrete.