The application of FRP-confined concrete is recognized to be an effective solution to increase the axial strength of many new and existing concrete columns. A number of experimental investigations and developments for numerical models have been established to understand the strength enhancement behaviour of the FRP-concrete confined section. This paper aims to investigate the influence of the confinement parameters including the concrete strength and the confining pressure on the strength enhancement of FRP-confined concrete specimens. Investigated data were collected from experimental works performed by the authors as well as results surveyed from state-of-the-art papers carefully selected and reviewed to provide an overview and in-depth knowledge in the development of this strengthening technique. Utilizing 927 experimental data from 127 papers from the literature, a 3 dimensional graph presentation (surface chart) have been utilized to investigate the strength enhancement of the FRP-confined concrete. This new graphing format assisted in demonstrating the non-linear influences for each of the parameters investigated on the confinement parameters on the strength enhancement of FRP-confined section. Unlike the conventional 2-dimensional plot of the confined concrete strength versus the confining pressure (both normalized by the unconfined concrete strength), the 3-dimensional graphing approach introduced in this paper is found to provide more information about the strength enhancement. Utilizing a Gauss surface fitting function, a refined enhancement ratio expression incorporating the individual influence of the confinement parameters is proposed in the paper and experimentally evaluated. (C) 2016 Elsevier Ltd. All rights reserved.
机构:King Saud Univ, Dept Civil Engn, Specialty Unit Safety, Riyadh 11421, Saudi Arabia
Elsanadedy, H. M.
Al-Salloum, Y. A.
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机构:King Saud Univ, Dept Civil Engn, Specialty Unit Safety, Riyadh 11421, Saudi Arabia
Al-Salloum, Y. A.
Abbas, H.
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King Saud Univ, Dept Civil Engn, Specialty Unit Safety, Riyadh 11421, Saudi ArabiaKing Saud Univ, Dept Civil Engn, Specialty Unit Safety, Riyadh 11421, Saudi Arabia
Abbas, H.
Alsayed, S. H.
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机构:King Saud Univ, Dept Civil Engn, Specialty Unit Safety, Riyadh 11421, Saudi Arabia
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Univ Adelaide, Sch Civil Environm & Min Engn, Adelaide, SA 5005, AustraliaUniv Adelaide, Sch Civil Environm & Min Engn, Adelaide, SA 5005, Australia
Lim, Jian C.
Ozbakkaloglu, Togay
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Univ Adelaide, Sch Civil Environm & Min Engn, Adelaide, SA 5005, AustraliaUniv Adelaide, Sch Civil Environm & Min Engn, Adelaide, SA 5005, Australia
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Hong Kong Polytech Univ, Dept Civil & Struct Engn, Hong Kong, Hong Kong, Peoples R ChinaHong Kong Polytech Univ, Dept Civil & Struct Engn, Hong Kong, Hong Kong, Peoples R China
Lam, L
Teng, JG
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Hong Kong Polytech Univ, Dept Civil & Struct Engn, Hong Kong, Hong Kong, Peoples R ChinaHong Kong Polytech Univ, Dept Civil & Struct Engn, Hong Kong, Hong Kong, Peoples R China
Teng, JG
FRP COMPOSITES IN CIVIL ENGINEERING, VOLS I AND II, PROCEEDINGS,
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