Prediction of Interfacial Bond Failure of FRP–Concrete Surface

Toutanji, Houssam; Saxena, Priyam; Zhao, Linlin; Ooi, Teng K.

doi:10.1061/(asce)1090-0268(2007)11:4(427)

Cited by 86 publications

(48 citation statements)

References 13 publications

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“…This is the test procedure most frequently used by researchers to measure bond strength. A number of recent studies based on this method have been published, specifically, by Yao et al (2005); Sharma et al (2006);Ferracuti et al (2007); Toutanji et al (2007), and Mazzotti et al (2009).…”

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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“…Several effective testing methods have been proposed, including the single shear test and the double shear test. Among these, the single shear test has become the standard experiment for measuring the shear bond strength because of its simplicity and reliability [3][4][5][6]. By the single shear test, researchers can observe the * Corresponding author.…”

Section: Introductionmentioning

confidence: 99%

On shear bond strength of FRP-concrete structures

Zhou

Yang

et al. 2010

Engineering Structures

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“…To drive a reliable model for predicting the externally bond strength between fiber-reinforced polymer (FRP) composites and concrete structures, a comprehensive database of laboratory testing from Chajes et al (1996), Maeda et al (1997), Täljsten (1997), Ueda et al (1999), Zhao et al (2000), Adhikary and Mutsuyoshi (2001), Fu-quan et al (2001), Nakaba et al (2001), Wu et al (2002), Tan (2002), Ren (2003), Dai et al (2005), Yao et al (2005), Sharma et al (2006), Toutanji et al (2007) and Ueno et al (2014), including 342 sub assemblages are collected from published literature as presented in Table 2. It should be noted that the adhesive material properties for some datasets were not provided.…”

Section: Data Collectionmentioning

confidence: 99%

Predicting Bond Strength between FRP Plates and Concrete Sub-strate: Applications of GMDH and MNLR Approaches

Hamze‐Ziabari

Yasavoli

2017

ACT

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Debonding of the fiber-reinforced polymer (FRP) reinforcement due to shear stresses is a very significant issue in design of concrete structures. Several experimental and theoretical investigations have been carried out to produce a relationship between the shear bond strength and the governing variables. However, existing empirical models do not provide an accurate prediction due to the complexity of the debonding process. In the present study, group method of data handling (GMDH) network as a novel machine learning approach was employed to predict the externally bond strength between FRP composites and concrete structures. The GMDH model was developed based on a reliable database including 342 experimental tests obtained from literature. The GMDH results were compared to the most common existing equations and also to the regression approaches developed in this study through statistical error parameters. Furthermore, some correction factors for four well-known equations were suggested based on regression approaches to improve their accuracy. Results indicated that the developed GMDH model outperformed the existing equations and also the developed regression-based equations in terms of both accuracy and safety aspects. Finally, parametric and sensitivity analyses were performed for further verification of the developed GMDH model in capturing the underlying physical behaviors of bond strength.

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Prediction of Interfacial Bond Failure of FRP–Concrete Surface

Cited by 86 publications

References 13 publications

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

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

On shear bond strength of FRP-concrete structures

Predicting Bond Strength between FRP Plates and Concrete Sub-strate: Applications of GMDH and MNLR Approaches

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