Assessment of the concrete part of the contact system supports in the field

Li, V. N.; Demina, Lyudmila; Vlasenko, S. A.

doi:10.1051/e3sconf/202016403028

Cited by 8 publications

(4 citation statements)

References 22 publications

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“…Temperature stresses are 2.5 times lower than shrinkage stresses [13]. As such, these stresses can cause the longitudinal cracks to build up in the supports, and when combined with other effects, accelerate the fracture processes, reducing the strength of the structure.…”

Section: Methodsmentioning

confidence: 99%

Improving diagnostics of damage to railway catenary supports

Demina

Vlasenko

2021

E3S Web Conf.

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The inspection of reinforced concrete catenary supports is a time-consuming process that necessitates a lot of time to inspect the entire fleet of supports. A large number of supports with a service life of more than 40 years require intensive monitoring and condition forecasting, which can inevitably lead to high economic costs for the work of the catenary electro-mechanics. The introduction of special technical tools to collect and process measurements could solve this problem and allow the planning of a replacement schedule for the supports based on their actual damage. The article discusses the basic factors affecting the load-bearing capacity of rein-forced concrete supports, the main damages occurring, and the procedure for carrying out inspections and assessing the current condition of the supports.

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Section: Methodsmentioning

confidence: 99%

Improving diagnostics of damage to railway catenary supports

Demina

Vlasenko

2021

E3S Web Conf.

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“…The area NDT tests may also find applications in the case of new structures, where acceptance tests are usually required. Such tests are conducted to determine if the requirements of a specification or contract are met [1,2,17,18].…”

Section: Motivationmentioning

confidence: 99%

“…The evaluation of reinforced concrete (RC) structures by nondestructive testing (NDT) methods is of great practical importance. Reinforcement corrosion is a serious (multibillion-dollar) issue and is only one of many possible problems [1,2].…”

Section: Introductionmentioning

confidence: 99%

Multisensory Spatial Analysis and NDT Active Magnetic Method for Quick Area Testing of Reinforced Concrete Structures

Frankowski,

Chady

2023

Materials

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This paper aims to present multisensory spatial analysis (MSA). The method was designed for the quick, simultaneous identification of concrete cover thickness h, rebar diameter, and alloys of reinforcement in large areas of reinforced concrete (RC) structures, which is a complex and unsolved issue. The main idea is to divide one complex problem into three simple-to-solve and based on separate premises tasks. In the transducers designed with the MSA, sensors are arranged spatially. This arrangement identifies each RC parameter separately based on the different waveforms/attributes. The method consists of three steps. All steps are described in the paper and supported by simulations and statistical analysis of the measurement. The tests were carried out using an Anisotropic Magneto-resistance (AMR) sensor. The AMR sensors can measure strong DC magnetic fields and can be combined in spatial transducers because of their small size. The selection of the sensor was extensively justified in the introduction section. The spatial transducer and the identification’s simplicity can allow for high accuracy in the real-time area testing of all three parameters. The risk of misclassification of discrete parameters was strongly reduced, and the h parameter can be identified with millimeter accuracy.

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“…The most current (multi-billion) issue is the reinforcement corrosion in constructions of this type. However, it is only one of many possible defects [1][2][3].…”

Section: Introductionmentioning

confidence: 99%

A Comparative Analysis of the Magnetization Methods Used in the Magnetic Nondestructive Testing of Reinforced Concrete Structures

Frankowski,

Chady

2023

Materials

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This work presents how significantly the proper selection of the magnetization method can improve almost all parameters of the magnetic method and affect the effectiveness of the evaluation of reinforced concrete (RC) structures. Three magnetization methods are considered in this paper: opposite pole magnetization (typical solution), same pole magnetization, and (as a reference point) no magnetization. The experiments are carried out in a three-dimensional (XYZ) space. Measurements along each of the axes are discussed in a separate section. The results show that the appropriate selection of the magnetization method can affect noise reduction, signal strength, and the separation of measurements carried out on different samples. This paper also discusses the situations when the magnetization may change the shape, cause deformations of waveforms, affect the area testing, and be used to significantly increase the efficiency of simultaneous evaluation of three basic parameters of RC structure. Experiments and simulations have proven that properly applied magnetization may strongly affect the evaluation’s effectiveness, making the magnetic method one of the most promising techniques in testing RC constructions.

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Assessment of the concrete part of the contact system supports in the field

Cited by 8 publications

References 22 publications

Improving diagnostics of damage to railway catenary supports

Improving diagnostics of damage to railway catenary supports

Multisensory Spatial Analysis and NDT Active Magnetic Method for Quick Area Testing of Reinforced Concrete Structures

A Comparative Analysis of the Magnetization Methods Used in the Magnetic Nondestructive Testing of Reinforced Concrete Structures

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