Effect of Coating Thickness on Bond Behaviors of Polymer Cement Coated Plain Steel Bar with Concrete and Finite Element Modeling

Xiong, Yaxuan; Wang, Kunrong; Liu, Zhiyong; Yang, Zhengguang

doi:10.2174/1874149501610010571

Cited by 4 publications

(2 citation statements)

References 5 publications

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“…In relation to the epoxy coating, the mechanical properties were selected based on values found in the literature. For instance, Xiong et al specified the elastic modulus as 4,150 MPa, the yield strength as 12.0 MPa, and the Poisson’s ratio as 0.31 ( 19 ). Lastly, at the coating-concrete and coating-steel interfaces, the parameters determined by Zhang et al for the cohesive behavior and damage in the normal, shear, and tangential directions were adopted ( 8 ).…”

Section: Development Length Of Tec Barsmentioning

confidence: 99%

Textured Epoxy-Coated Rebars: Physical, Structural, and Empirical Characterization

Pérez-Claros

Andrawes

2023

Transportation Research Record: Journal of the Transportation R

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Although the traditional epoxy coating represents an effective corrosion protection system, it has the disadvantage of making bridge decks more susceptible to cracking. This phenomenon occurs because its smooth surface reduces the bond with the concrete and, therefore, increases the radial components of the force-transferring mechanism. To try to mitigate these problems, the Illinois Department of Transportation developed the textured epoxy-coated (TEC) reinforcement, which possesses a roughened surface and, in recent years, has been the subject of study at the University of Illinois Urbana-Champaign, in the U.S. Particularly, this experimental program explores, complements, and compares the physical and bond-slip characteristics of the TEC rebars developed hitherto. From the physical characterization, different parameters are measured on the textured surfaces to obtain a numerical comparison of each roughness type. Also, determining the adhesion strength and thickness of the textured coating reveals that it provides similar corrosion protection to the traditional approach while keeping its integrity on the steel substrate. The bond-slip characterization, in turn, was done using pull-out tests and, by combining these results with the microstructure examination of TEC bars, it is found that the absence of texture voids is related to the degradation of the slip resistance. Furthermore, through a finite element model, the development length of the TEC reinforcement is estimated and compared with the values calculated according to current standards. Finally, given the complexity of obtaining the surface parameters of the coating, an empirical, weight-based approach is developed for the TEC bars as a rapid method for assessing their roughness.

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Section: Development Length Of Tec Barsmentioning

confidence: 99%

Textured Epoxy-Coated Rebars: Physical, Structural, and Empirical Characterization

Pérez-Claros

Andrawes

2023

Transportation Research Record: Journal of the Transportation R

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“…The polymer modified cementbased coating overcomes the disadvantages of the FBE coating. Due to existence of cementitious composite in polymer emulsion, the polymer cement based (PCB) coating was more stable and durable [5,6] and the PCB coating has a less influence on the bond behavior between concrete and steel bar [7].…”

Section: Introductionmentioning

confidence: 99%

Bond Behaviors between Polymer Cement Coated Steel Bar Subjected to Environmental Action and Concrete

Xiong

Wang

Liu

2016

KEM

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The bond behaviors (failure modes, bond strength, bond stress slip curves) between steel bars coated with polymer modified cement-based coating and concrete as well as effect of carbonation and chloride ingress on the bond behaviors were studied in this paper. Twenty-four concentrically reinforced concrete cubes were cast and pull-out tests under monotonic loading were carried out. The results indicated that the polymer modified cement-based coating can be well bonded with steel bar and the failure mode of all the specimens is splitting. The typical polymer cement-based coating could enhance the bond strength slightly of the uncoated steel bar with concrete in this experiments. But the bond strength were all depressed between the coated steel bars subjected to carbonation and chloride ingress and concrete.

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Bond-slip behaviors between reinforced concrete and coated rebar via a new strain monitoring method and FEA simulation

Liu

Yang

et al. 2020

Construction and Building Materials

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Effect of Coating Thickness on Bond Behaviors of Polymer Cement Coated Plain Steel Bar with Concrete and Finite Element Modeling

Cited by 4 publications

References 5 publications

Textured Epoxy-Coated Rebars: Physical, Structural, and Empirical Characterization

Textured Epoxy-Coated Rebars: Physical, Structural, and Empirical Characterization

Bond Behaviors between Polymer Cement Coated Steel Bar Subjected to Environmental Action and Concrete

Bond-slip behaviors between reinforced concrete and coated rebar via a new strain monitoring method and FEA simulation

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