Uniaxial Tensile Stress-Strain Relationships of RC Elements Strengthened with FRP Sheets

Yang, Guang; Zomorodian, Mehdi; Belarbi, Abdeldjelil; Ayoub, Ashraf

doi:10.1061/(asce)cc.1943-5614.0000639

Cited by 9 publications

(11 citation statements)

References 16 publications

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“…The experimental program consisting thirteen full-scale FRP strengthened RC prisms tested under direct tensile loading was discussed in detail in [34][35].…”

Section: Experimental Programmentioning

confidence: 99%

“…7 shows the curves of normalized tensile stress of concrete with respect to the average tensile strain of tested specimens. The derivations of these curves are presented elsewhere [35]. Fig.…”

Section: Tension Stiffening Effectmentioning

confidence: 99%

“…The R 2 value for EC2-04 equals -1.27, which shows that the prediction are very scatter compared to EC2-92 and fib 14. In a previous research [35] the authors compared their experimental results with the code predictions, and it was found that the EC2 -92 shows a better prediction of the results compared to the EC2-04 and fib 14 codes; This can be attributed to the fact that increasing the number of experimental test used in the statistical analysis will result in a more precise analysis of the crack spacing predictions. Also, the experimental results presented by Ueda et al [9] showed a good agreement with the fib 14 code formulas, compared to the other experimental tests in the database.…”

Section: Tablementioning

confidence: 99%

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Cracking behavior and crack width predictions of FRP strengthened RC members under tension

Zomorodian

Yang

Belarbi

et al. 2016

Engineering Structures

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This is the accepted version of the paper.This version of the publication may differ from the final published version. Permanent repository link CRACKING BEHAVIOR AND CRACK WIDTH PREDICTIONS OF FRP STRENGTHENED RC MEMBERS UNDER TENSION AbstractThis paper presents and discusses the experimental results of uniaxial tensile tests of fiber reinforced polymer externally strengthened reinforced concrete (FRP strengthened RC) prisms in terms of crack width and crack spacing. As a non-contact and material independent system for in-time measurement of displacement and strain, the digital image correlation (DIC) technique has been used in this study for investigating the evolution of strains and formation of cracks during uniaxial tensile tests. As a result, the cracks were measured precisely at any load stage.The experimental results of tests performed by authors and other researchers on FRP strengthened RC members in tension are compared to prediction models from code provisions and guidelines (Eurocode 2 and fib 14), and their suitability are analyzed and discussed. The results show the dependence of the behavior and crack characteristics of FRP strengthened RC members to parameters such as wrapping scheme and FRP reinforcement ratios which are not included in design provisions for crack analysis. A new formulation for crack width and spacing for FRP strengthened RC members, calibrated using the experimental results, has been proposed which considers all the main affecting parameters.

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“…The experimental program consisting thirteen full-scale FRP strengthened RC prisms tested under direct tensile loading was discussed in detail in [34][35].…”

Section: Experimental Programmentioning

confidence: 99%

Section: Tension Stiffening Effectmentioning

confidence: 99%

Section: Tablementioning

confidence: 99%

See 1 more Smart Citation

Cracking behavior and crack width predictions of FRP strengthened RC members under tension

Zomorodian

Yang

Belarbi

et al. 2016

Engineering Structures

Self Cite

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“…These tests can be also done experimentally as Kupfer et.al [18]. In order to compare the with the experimental results, one option to observe a more general localized behavior of concrete under different levels of confinement, full field measurment techniques like digital image correlation (DIC) method can be utilized [19][20][21][22]. A remarkable feature that can be pointed out about post processing of digital image correlation system is their feasibility in being implemented in expert systems.…”

Section: Introductionmentioning

confidence: 99%

Efficiency of Damage-Plasticity Models in Capturing Compaction-Expansion Transition of Concrete Under Different Compression Loading Conditions

Mousavi¹,

Champiri²,

Willam³

2016

Proceedings of the VII European Congress on Computational Methods in Applied Sciences and Engineering (ECCOMAS Congress 2016)

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Abstract. The pre-and post-peak performance features of two widely used damage-plasticity constitutive formulations are assessed for modeling the multiaxial response behavior of pressure sensitive quasi-brittle materials such as concrete. Two benchmark problems have been solved using commercial software packages; ABAQUS which implements the two invariant LeeFenves damaged plasticity formulation as its main feature for concrete has been used along with LS-DYNA which is using Duvaut-Lion damage and plasticity model, a three invariant formulation. In order to have consistent results, the parameter identification and calibration for both models has been performed and response of both models has been compared to each other under uniaxial tension and compression. The two benchmark problem are triaxial compression CTC and triaxial tension CTE. The aim of this study is to observe the difference between two well-known material models in capturing the compaction to extension regime in the yielded material. The difference between the response of each material model and also the efficiency of input parameters in controlling of this transition has been studied in this paper. Based on these failure diagnostics, the main shortcomings of each formulation are discussed and possible enhancements and remedies are proposed for the pre-and post-peak feature.

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“…Thick-walled cylinders are widely used for nuclear containment and the U.S Nuclear Regulatory Commission (NRC) provided some regulations to perform a drop test which are mainly for steel structures [1][2][3]. From the experimental point of view, usually Digital Image Correlation method (DIC) is used to capture strain [4][5][6][7]. A long-thickwalled cylinder is selected to perform some drop tests.…”

Section: Introductionmentioning

confidence: 99%

Drop Test of Thick-Walled Concrete Cylinder Subjected to Shrinkage and Expansion

Champiri¹,

Mousavi²,

Hanifehzadeh³

et al. 2016

Proceedings of the 9th International Conference on Fracture Mechanics of Concrete and Concrete Structures

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Two different models including confined cylinder with internal pressure and nonconfined cylinder of a concrete structure are selected for a drop test. With regard to internal pressure, the performance of these structures is compared considering the shrinkage strain which is calculated based on the latest model of RILEM called "B4" (RILEM report, 2014) and expansion which is normally due to alkali-silica reaction (ASR) effect on concrete and calculated based on the substantial experimental study of Larive (1998). The simulations were performed in LS-DYNA, which is suitable for high rate problems in form of explicit time integration. MAT_159 which is available in material library of LS-DYNA is used for the concrete. The failure modes due to the impact of the end drop test are studied.

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Uniaxial Tensile Stress-Strain Relationships of RC Elements Strengthened with FRP Sheets

Abstract: This is the accepted version of the paper.This version of the publication may differ from the final published version. Permanent repository link

Cited by 9 publications

References 16 publications

Cracking behavior and crack width predictions of FRP strengthened RC members under tension

Cracking behavior and crack width predictions of FRP strengthened RC members under tension

Efficiency of Damage-Plasticity Models in Capturing Compaction-Expansion Transition of Concrete Under Different Compression Loading Conditions

Drop Test of Thick-Walled Concrete Cylinder Subjected to Shrinkage and Expansion

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