Bearing Capacity of Reinforced Concrete Beams with Initial Cracks Reinforced with Polymer Composite Materials

Polskoy, Petr; Mailyan, Dmitry; Beskopylny, Alexey; Meskhi, Besarion

doi:10.3390/polym14163337

Cited by 4 publications

(4 citation statements)

References 35 publications

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“…During this stage, the rate of physical wear accumulation substantially decelerates. The stresses that originated in the first phase are alleviated and counteracted through the formation of cracks and deformations in the structures [17].…”

Section: Research Materials and Methodsmentioning

confidence: 99%

Organizational and technological aspects of industrial facility renovation

Zilberova,

Mailyan,

Novoselova

et al. 2023

E3S Web of Conf.

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The refurbishment of industrial structures is a multifaceted, resource-intensive, and financially demanding undertaking. The process entails various challenges that necessitate thorough consideration during the design phase. Such an approach is pivotal in devising effective solutions for the reconstruction of industrial facilities, regardless of the operational conditions, and can lead to substantial reductions in construction costs. The ultimate objective of such renovation endeavors is to enhance production capacity and overall enterprise profitability, mitigate adverse environmental effects, and ameliorate the quality of urban living environments.

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Section: Research Materials and Methodsmentioning

confidence: 99%

Organizational and technological aspects of industrial facility renovation

Zilberova,

Mailyan,

Novoselova

et al. 2023

E3S Web of Conf.

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“…The characteristics of materials, including composite materials, the structure of the rack frames, the strengthening method and testing are detailed in [9][10][11]. The research program is described in [12].…”

Section: Methodsmentioning

confidence: 99%

Proposals for Determining the Relative Deformations Design Value of ε<sub>b3</sub> Concrete in Volumetric Deformation Conditions

Georgiev

Mailyan

Blyagoz

2021

MSF

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The article presents the studies’ results on the deformability and strength of reinforced concrete racks reinforced with composite materials with the characteristics stretching beyond the limits established by the norms of Russia, namely: the λh structures flexibility exceeding the value 15, the ratio of the cross-section sides equal to 1.5 and the eccentricity of the load application e0 exceeding 0.1h. The results of the tested racks calculations are analyzed according to BC 164.1325800.2014, which in some cases confirmed the inexpediency of using composite materials. However, according to the results of our experiment, an increase in the strength of a number of racks with the characteristics that go beyond the recommended standards was found. The purpose of this study is to check the methodology for calculating Russian norms for the compressed reinforced concrete elements, the parameters of which are outside the limits recommended by the norms, to develop proposals for improving the calculation based on the obtained experimental data and to determine the concrete deformability effect on the change in bearing capacity. The article discusses flexible struts, reinforced with composite materials, located in the transverse direction. The experimental data results on the deformability of concrete and the strength of struts reinforced in the transverse direction are presented. The calculation methodology, compiled in accordance with Russian standards, the calculation results of which are the theoretical values of the deformability of concrete and the strength of the racks, is considered. After comparison, a significant underestimation of the theoretical strengths and a mismatch in the struts’ concrete deformations were revealed. It was found that the change in compressive deformations of concrete depends on the external composite reinforcement. Theoretical values , calculated according to the current standards, have significant discrepancies with the experimental ones. Based on the experiments’ results analysis, in the methodology of norms for calculating the ultimate compressive deformations of concrete the suggestions that take into account the type and percentage of composite reinforcement and ensure a good agreement between experimental and theoretical values have been made. After the introduction of the coefficient into normative calculation, new data on the theoretical strength of the struts were obtained, which showed significantly better convergence with the experimental data.

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“…The apparent differences between these two reinforcement systems are presented, and it will be analyzed whether differences in the composite behavior can be characterized because of these differences. Today, in addition to carbon rebars, carbon grids are also frequently used in Germany in the field of research as well as for practical applications [37][38][39]. There are already numerous studies on the bond behavior of carbon grids in concrete [40][41][42].…”

Section: Further Researchmentioning

confidence: 99%

Experimental Investigations of the Bond Behavior between Carbon Rebars and Concrete in Germany

Schumann,

May,

May

et al. 2023

Buildings

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In this paper, we address the relatively underexplored topic of the bond behavior between various carbon rebars and high-strength concrete. This research aims to bridge the knowledge gap in understanding how different manufacturing processes and surface profiles of carbon fiber rods influence their bond strength with concrete. Through experimental bond tests comparing different carbon fiber rebars with varied surface profiles and manufacturing methods, we observed that the achievable bond stresses are significantly influenced by these factors. One carbon rebar variant was selected based on preliminary investigations for detailed analysis. Extensive investigations were conducted on the preferred carbon rebar. Factors such as concrete strength, bond length, and testing speed were experimentally explored. The results not only corroborate many findings from traditional reinforced concrete construction but also reveal new phenomena unique to carbon rebars. These insights are crucial for advancing the application of carbon rebars in modern construction, offering a potential solution to challenges faced in conventional concrete construction.

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Bearing Capacity of Reinforced Concrete Beams with Initial Cracks Reinforced with Polymer Composite Materials

Cited by 4 publications

References 35 publications

Organizational and technological aspects of industrial facility renovation

Organizational and technological aspects of industrial facility renovation

Proposals for Determining the Relative Deformations Design Value of ε<sub>b3</sub> Concrete in Volumetric Deformation Conditions

Experimental Investigations of the Bond Behavior between Carbon Rebars and Concrete in Germany

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