Axial compressive behavior of FRP-confined concrete: Experimental test database and a new design-oriented model
Togay Ozbakkaloglu,Jian C. Lim +1 more
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TLDR
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.Abstract:
A large number of experimental studies have been conducted over the last two decades to understand the behavior of FRP-confined concrete columns. This paper presents a comprehensive test database constructed from the results of axial compression tests on 832 circular FRP-confined concrete specimens published in the literature. The database was assembled through an extensive review of the literature that covered 3042 test results from 253 experimental studies published between 1991 and the middle of 2013. The suitability of the results for the database was determined using carefully chosen selection criteria to ensure a reliable database. This database brings reliable test results of FRP-confined concrete together to form a unified framework for future reference. Close examination of the test results reported in the database led to a number of important observations on the influence of important parameters on the behavior of FRP-confined concrete. A new design-oriented model that was developed to quantify these observations is presented in the final part of the paper. It is shown that the predictions of the proposed model are in close agreement with the test results and the model provides improved predictions of the ultimate conditions of FRP-confined concrete compared to any of the existing models.read more
Citations
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Confinement Model for FRP-Confined High-Strength Concrete
Jian C. Lim,Togay Ozbakkaloglu +1 more
TL;DR: In this paper, the axial compressive behavior of fiber-reinforced polymer (FRP) composites for high-strength concrete (HSC) has been investigated.
Journal ArticleDOI
Stress–strain model for normal- and light-weight concretes under uniaxial and triaxial compression
Jian C. Lim,Togay Ozbakkaloglu +1 more
TL;DR: In this article, a unified confinement model for unconfined and confined concretes was developed to predict the peak and residual conditions and the complete stress-strain behavior of unconfining and actively confined concrete.
Journal ArticleDOI
Lateral Strain-to-Axial Strain Relationship of Confined Concrete
Jian C. Lim,Togay Ozbakkaloglu +1 more
TL;DR: In this article, a generic model was proposed to describe the lateral strain-to-axial strain relationship of confined concrete, based on a large number of experimental test results of both fiber-reinforced polymers (FRP) confined and actively confined concretes.
Journal ArticleDOI
General Stress-Strain Model for Steel- and FRP-Confined Concrete
Yu-Fei Wu,Yang Wei +1 more
TL;DR: A new and general stress-strain model for concrete confined by steel or fiber reinforced polymer (FRP) is developed in this article, where one additional variable and one constant are added to the well-known Popovics model to control the type and the shape of the stress curve.
Journal ArticleDOI
Behavior of steel fiber-reinforced high-strength concrete-filled FRP tube columns under axial compression
Tianyu Xie,Togay Ozbakkaloglu +1 more
TL;DR: In this article, the axial compressive behavior of steel fiber reinforced high-strength concrete (SFRHSC)-filled FRP tubes was investigated under axial compression and axial stress-strain behavior of CFFTs was analyzed.
References
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Influence of fiber orientation and specimen end condition on axial compressive behavior of FRP-confined concrete
TL;DR: In this paper, an experimental investigation on the effect of fiber angle and specimen end condition on axial compressive behavior of fiber reinforced polymer (FRP)-confined concrete cylinders was presented.
Journal ArticleDOI
Strength and ductility of concrete cylinders confined with FRP composites
Gang Wu,Zhitao Lu,Zhishen Wu +2 more
TL;DR: In this paper, the authors analyzed the confinement effect and failure mechanisms of fiber reinforced polymer (FRP) confined concrete cylinders and derived the maximum strength, peak strain, ultimate strength and ultimate strain.
Journal ArticleDOI
Concrete confined by FRP material: a plasticity approach
TL;DR: In this article, a constitutive model based on plasticity theory is applied to steel-confined concrete and modified and calibrated so as to incorporate the dilation characteristics of the carbon fiber-reinforced polymer (FRP)-constrained concrete.
Journal ArticleDOI
Effect of load eccentricity on the stress–strain relationship of FRP-confined concrete columns
Yu-Fei Wu,Cheng Jiang +1 more
TL;DR: In this article, the authors presented an experimental and analytical study of fiber reinforced polymer (FRP) confined circular concrete columns under eccentric loading, and developed a new model for the stress-strain relationship of FRP-confined columns.
Journal ArticleDOI
Unified Strength Model Based on Hoek-Brown Failure Criterion for Circular and Square Concrete Columns Confined by FRP
Yu-Fei Wu,Yingwu Zhou +1 more
TL;DR: In this article, a new model based on the Hoek-Brown failure criterion is proposed for evaluating the strength of fiber-reinforced polymer (FRP)-confined concrete columns.