Compressive Behaviour of Carbon Fibre Composite Jacketed Concrete With Circular and Non-Circular Cross-Sections

İlki, Alper; Kumbasar, Nahit

doi:10.1080/13632460309350455

Cited by 125 publications

(77 citation statements)

References 20 publications

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“…It is recommended that the influence of internal transverse or longitudinal steel reinforcement has to be explicitly considered in the development of confinement model, in order to eliminate the additional effect of steel reinforcement in FRP confinement [26]. For instance, Lam and Teng [9] have excluded the test data for specimens with steel reinforcement from their collection of test database.…”

Section: G Transverse Steel Reinforcementmentioning

confidence: 99%

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State-of-the-art Studies on the FRP-confined Concrete

Sun¹,

Luo²

2017

Proceedings of the 2016 International Conference on Architectural Engineering and Civil Engineering

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Abstract-The application of FRP in civil engineering has emerged as a popular method of column retrofitting and strengthening. Numerous experimental studies have proven that the confinement with FRP-wrap or tube encasement could enhance the strength, ductility and durability of concrete columns. The variation of each distinct experimental test result to its actual mean value is the general cause of modeling inaccuracy, and this appears to be a lack of consensus among the research community. This paper critically reviewed the current experimental studies with the emphasis on the revelation of the mechanical behavior of FRP-confined concrete and analytical study of its behavior. Lastly, some comments are made on the development trends of study on the mechanical behavior of FRP-confined concrete columns.

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Section: G Transverse Steel Reinforcementmentioning

confidence: 99%

“…Therefore, number of confinement models has been developed to model the stressstrain behavior of circular confined concrete [3][4][5][8][9]17,19,[22][23][24][25][26].…”

Section: Shape and Geometries Of Cross-sectionmentioning

confidence: 99%

State-of-the-art Studies on the FRP-confined Concrete

Sun¹,

Luo²

2017

Proceedings of the 2016 International Conference on Architectural Engineering and Civil Engineering

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“…The proposed confinement model has been validated by means of experimental theoretical comparisons based on an experimental database [23][24][25][26][27][28][29][30][31][32][33][34][35][36][37][38][39][40][41] involving 136 square columns and 44 rectangular columns. The minimum and maximum dimensions of the cross-sections in the database are 150 and 1270 mm, always with ζ ≤ 2; the concrete unconfined strength ranges between 12 and 54.1 MPa.…”

Section: Validation Of the Modelmentioning

confidence: 99%

Simplified Modeling of Rectangular Concrete Cross-Sections Confined by External FRP Wrapping

2014

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Abstract:The goal of this research project is to model the effect of confinement by means of fiber reinforced polymer (FRP) externally bonded wrapping, hence to provide a simplified closed form solution to determine directly the ultimate confined concrete strength. Common cross-section shapes for reinforced concrete (RC) columns are considered herein, namely square and rectangular. The simplified model is derived from a more refined iterative confinement model proposed by the same authors to evaluate the entire stress-strain relationship of confined concrete. Based on a detailed analysis of the stress state through Mohr's circle, a simplified closed form solution is proposed to account for the non-uniformly confined concrete performance exhibited in non-axisymmetric sections. The non-uniform confining stress field exhibited in such cross-sections is explicitly considered by means of the mean value integral of the pointwise variable stress state over the cross-section. The key aspect of the proposed methodology is the evaluation of the effective equivalent pressure to be inserted in any triaxial confinement model, to account for the peculiarities of square and rectangular cross-sections. Experimental data, available in the literature and representative of a wide stock of applications, were compared to the results of the theoretical simplified model to validate the proposed approach, and satisfactory results were found.

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“…Considerable research has been devoted to FRP-confined circular columns and numerous models have been proposed [1][2][3][4][11][12][13][14][18][19][20][21][22][23][24][25][26]. The common experimental data to predict ultimate (confined) strength are especially in the range of 30 to 50 MPa [11,[25][26][27][28][29][30][31][32][33].…”

Section: Literature Survey and Databasementioning

confidence: 99%

“…In terms of concrete cylinder strength f co , the averaged database covers 116 data for FRP-wrapped cylinders from 7 to 108 MPa [3,[24][25][26][27][30][31][32][35][36][37][38][39][40][41][42] and 19 data for FRP tube encased cylinders from 29.6 to 45.4 MPa [11,28,29,33,34]. In addition, 56 averaged data [6,14,23,[43][44][45]] from 17 to 80 MPa were used for calibration.…”

Section: Literature Survey and Databasementioning

confidence: 99%

Modified Johnston Failure Criterion from Rock Mechanics to Predict the Ultimate Strength of Fiber Reinforced Polymer (FRP) Confined Columns

Girgin

2013

Polymers

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Abstract:The failure criteria from rock mechanics, Hoek-Brown and Johnston failure criteria, may be extended and modified to assess the ultimate compressive strength of axially loaded circular fiber reinforced polymer (FRP)-confined concrete columns. In addition to the previously modified Hoek-Brown criterion, in this study, the Johnston failure criterion is extended to scope of FRP-confined concrete, verified with the experimental data and compared with the significant relationships from the current literature. Wide-range compressive strengths from 7 to 108 MPa and high confinement ratios up to 2.0 are used to verify the ultimate strengths in short columns. The results are in good agreement with experimental data for all confinement levels and concrete strengths.

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Compressive Behaviour of Carbon Fibre Composite Jacketed Concrete With Circular and Non-Circular Cross-Sections

Cited by 125 publications

References 20 publications

State-of-the-art Studies on the FRP-confined Concrete

State-of-the-art Studies on the FRP-confined Concrete

Simplified Modeling of Rectangular Concrete Cross-Sections Confined by External FRP Wrapping

Modified Johnston Failure Criterion from Rock Mechanics to Predict the Ultimate Strength of Fiber Reinforced Polymer (FRP) Confined Columns

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