Adherence analysis of fiber-reinforced polymer strengthened RC beams

Perera, Ricardo; Recuero, A.; Diego, Ana de; López, Cecilio

doi:10.1016/j.compstruc.2004.03.060

Cited by 13 publications

(15 citation statements)

References 10 publications

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“…It has nonetheless been applied by a number of researchers, including, most recently, Foster and Khomwan (2005); Leung et al (2006), andCao et al (2007). Mixed mode bond tests, consisting of beam-type tests or special configurations (Horiguchi and Saeki 1997;Perera et al 2004;Wan et al 2004;Guo et al 2005) in which both normal and shear stresses are induced at the interface, have been studied less thoroughly. Horiguchi and Saeki (1997) reported that the bond strength values found with beam-type testing lay in-between the results observed with tensile tests, which yielded higher, and shear tests, which yielded lower values.…”

Section: Introductionmentioning

confidence: 99%

Effect of Adhesive Thickness and Concrete Strength on FRP-Concrete Bonds

2012

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Abstract:The use of fiber-reinforced polymer (FRP) composites for strengthening, repairing, or rehabilitating concrete structures has become more and more popular in the last 10 years. Irrespective of the type of strengthening used, design is conditioned, among others, by concrete-composite bond failure, normally attributed to stress at the interface between these two materials. Single shear, double shear, and notched beam tests are the bond tests most commonly used by the scientific community to estimate bond strength, effective length, and the bond stress-slip relationship. The present paper discusses the effect of concrete strength and adhesive thickness on the results of beam tests, which reproduce debonding conditions around bending cracks much more accurately. The bond stress-slip relationship was analyzed in a cross section near the inner edge, where stress was observed to concentrate. The ultimate load and the bond stress-slip relationship were visibly affected by concrete strength. Adhesive thickness, in turn, was found to have no significant impact on low-strength concrete but a somewhat greater effect on higher strength materials.

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Section: Introductionmentioning

confidence: 99%

Effect of Adhesive Thickness and Concrete Strength on FRP-Concrete Bonds

2012

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“…Yang et al [8] have developed a discrete crack model based on a finite element analysis method for RC beam reinforced with fibre reinforced polymer plates, which can simulate multiple discrete crack propagation during the whole loading process until the structures collapse. Perera et al [9] have proposed a nonlinear numerical model based on damage mechanics, that permits consideration of the position and increase of concrete cracks which have a very important influence on the behaviour of strengthened beams. The model also affects the stress distribution and the failure mechanism.…”

Section: Introductionmentioning

confidence: 99%

Numerical assessment of FRP retrofitting systems for reinforced concrete elements

Rougier

Luccioni

2007

Engineering Structures

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“…For example, Wong and Vecchio [5] carried out two dimensional FE analyses to model the de-bonding phenomena in three large-scale RC concrete beams strengthened with externally bonded FRP plates. Perera et al [6] with the range of 25.3 to 600 GPa. Said et al [10] proposed a simple model for predicting the FRP strain at which debonding occurs in flexural members.…”

Section: Introductionmentioning

confidence: 99%

New model for post-fatigue behaviour of CFRP to concrete bond interface in single shear

Daud

Cunningham

Wang

2017

Composite Structures

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In this paper, a finite element model using ABAQUS 6.10-1 is developed to simulate the CFRP-to-concrete bonded joint behaviour in single shear pull-out tests. The model adopts the cohesive surface approach and the simulation results are checked against the authors' test results (monotonic and post-fatigue) in order to demonstrate the accuracy of the model. Parametric studies using the validated model were carried out to investigate the effects of varying the bond length, the thickness of FRP, the type of FRP, the concrete strength, and the bond width ratio. The results were then used to assess the various existing design code approaches for predicting the FRP-concrete bond behaviour. The post-fatigue numerical results indicate that the existing design code methods all have significant discrepancies. Based on the work conducted a simple and potentially more accurate model for predicting the debonding strain of CFRP plate in single shear is then presented.

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Adherence analysis of fiber-reinforced polymer strengthened RC beams

Cited by 13 publications

References 10 publications

Effect of Adhesive Thickness and Concrete Strength on FRP-Concrete Bonds

Effect of Adhesive Thickness and Concrete Strength on FRP-Concrete Bonds

Numerical assessment of FRP retrofitting systems for reinforced concrete elements

New model for post-fatigue behaviour of CFRP to concrete bond interface in single shear

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