Concrete confined by FRP material: a plasticity approach

Karabinis, Athanasios I.; Rousakis, Theodoros

doi:10.1016/s0141-0296(02)00011-1

Cited by 185 publications

(68 citation statements)

References 7 publications

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“…The current database [1,[4][5][6][7][8]11,12,[21][22][23]41,42,[49][50][51][52][53][54][55][56][57][58][59][60][61][62][63] composed of n = 198 averaged data was updated with n = 40 data [9,10,[22][23][24][25][26]35,64] from the recent literature on HSC, UHSC, and UHPC for the FRP sheet types mentioned above. Meanwhile, UHSC and UHPC strength data in the literature are available up to 113.6 and 188 MPa, respectively.…”

Section: Reference Failure Criterion For Rock Modified Form For Frp Cmentioning

confidence: 99%

A Design-Oriented Combined Model (7 MPa to 190 MPa) for FRP-Confined Circular Short Columns

Girgin

2015

Polymers

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This study addresses a design oriented combined model to predict the ultimate strengths and ultimate strains in an extensive range of unconfined strength (7 to 190 MPa) for the axially loaded fiber-reinforced polymer (FRP)-wrapped circular short columns. Modified Hoek-Brown strength criterion, which was previously extended to FRP-confined concrete from 7 to 108 MPa, is revisited and verified. An empirical strength model beyond 108 MPa encompassing ultra-high strength concrete (UHSC) and ultra-high performance concrete (UHPC) data, as well as empirical strain models, are defined to accomplish the design oriented combined model. This article especially focuses on the verification of the proposed strain models. The assessment performances of those models for carbon FRP (CFRP) and glass FRP (GFRP) confinement are compared with specific models in the current literature. Strength and strain predictions for UHSC and UHPC are integrated into the design oriented combined model as well. The assessments on this model agree with the experimental results in high accuracy.

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Section: Reference Failure Criterion For Rock Modified Form For Frp Cmentioning

confidence: 99%

A Design-Oriented Combined Model (7 MPa to 190 MPa) for FRP-Confined Circular Short Columns

Girgin

2015

Polymers

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“…The writers collated a test database of 329 FRP confined plain concrete specimens reported by Demers and Neale (1994), Watanabe et al (1997), Matthys et al (1999), Rochette and Labossière (2000), Xiao and Wu (2000), Suter and Pinzelli (2001), Parvin and Wang (2001), Pessiki et al (2001), Shehata et al (2002), De Lorenzis et al (2002, Karabinis and Rousakis (2002), Lam and Teng (2003b), Chaallal et al (2003), Ilki and Kumbasar (2003), Masia et al (2004), Berthet et al (2005), Lam et al (2006), Saenz and Pantelides (2006), Jiang and Teng (2007), Valdmanis et al (2007), Al-Salloum (2007), Rousakis et al (2007), Wang and Wu (2008), Tao et al (2008), Wu and Wei (2010), , and Hadi et al (2013). The primary focus of this paper is on CFRP; as such, test results of materials other than CFRP were excluded from this database.…”

Section: Test Databasementioning

confidence: 99%

Strain Estimation of CFRP-Confined Concrete Columns Using Energy Approach

Pham

Hadi

2013

J. Compos. Constr.

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A new model is presented for calculating the axial strain of carbon fiber-reinforced polymer (CFRP)-confined concrete columns. An energy-balance approach is introduced to establish a relationship of the energy absorption between a confined concrete column and CFRP. The proposed model was verified using a large database collected from 167 CFRP-confined plain concrete specimens. This database contains 98 circular specimens with diameters ranging between 100 and 152 mm, and 69 square specimens having a side length ranging between 100 and 152 mm. The database covers unconfined concrete strengths from 20 to 50 MPa. The proposed model shows very good correlation with the experimental results. In addition, the proposed model also provides a comparative prediction of the strain of CFRP-confined concrete columns in two extreme cases, i.e., (1) insufficient confinement, and (2) heavy confinement, which are not usually well predicted by other models. Abstract: A new model is presented for calculating the axial strain of carbon fiber-reinforced polymer (CFRP)-confined concrete columns. An energy-balance approach is introduced to establish a relationship of the energy absorption between a confined concrete column and CFRP. The proposed model was verified using a large database collected from 167 CFRP-confined plain concrete specimens. This database contains 98 circular specimens with diameters ranging between 100 and 152 mm, and 69 square specimens having a side length ranging between 100 and 152 mm. The database covers unconfined concrete strengths from 20 to 50 MPa. The proposed model shows very good correlation with the experimental results. In addition, the proposed model also provides a comparative prediction of the strain of CFRP-confined concrete columns in two extreme cases, i.e., (1) insufficient confinement, and (2) heavy confinement, which are not usually well predicted by other models.

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“…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]. In this study, a database involved in short columns (L/D = 1.6 to 2.9, most of them are 2) [3,11,[24][25][26][27][28][29][30][31][32][33][34][35][36][37][38][39][40][41][42] was deployed regarding the confinement levels from 0.03 up to 2.0 by including AFRP, CFRP, and GFRP jacketing. The average value of nominally identical specimens in each test group was used to decrease scattering and error in the analyses.…”

Section: Literature Survey and Databasementioning

confidence: 99%

“…In addition, the data from observed lateral stresses or coupon test results were used to improve the reliability. 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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Concrete confined by FRP material: a plasticity approach

Cited by 185 publications

References 7 publications

A Design-Oriented Combined Model (7 MPa to 190 MPa) for FRP-Confined Circular Short Columns

A Design-Oriented Combined Model (7 MPa to 190 MPa) for FRP-Confined Circular Short Columns

Strain Estimation of CFRP-Confined Concrete Columns Using Energy Approach

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

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