Experimental measurement of the diameter and cover depth of steel reinforcement using an electromagnetic concrete cover meter

Hüblová, Sabina; Cikrle, Petr; Ondrej, Karel; Kocáb, Dalibor

doi:10.1088/1757-899x/549/1/012011

Cited by 4 publications

(4 citation statements)

References 2 publications

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“…In addition, the following material tests were carried out to fully diagnose the foundation and obtain the material properties required for the numerical analysis: destructive tests of cores cut from the structure in order to assess the compressive strength of concrete; investigations concerning the homogeneity of strength characteristics, and the estimation of the concrete’s strength grade on the basis of sclerometer tests [ 17 , 18 ]; measurements of the extent and intensity of the carbonation process of the subsurface concrete layer conducted on the cut cores using the rainbow test [ 19 , 20 ]; localisation of the concrete’s reinforcement and the determination of its arrangement, its diameters, and the thickness of the concrete’s cover using a non-destructive electromagnetic method [ 21 ], followed by the comparison of the obtained results with archival documentation. Figure 2 shows a general flow chart of the analysis performed.…”

Section: Methodsmentioning

confidence: 99%

“…localisation of the concrete’s reinforcement and the determination of its arrangement, its diameters, and the thickness of the concrete’s cover using a non-destructive electromagnetic method [ 21 ], followed by the comparison of the obtained results with archival documentation. Figure 2 shows a general flow chart of the analysis performed.…”

Section: Methodsmentioning

confidence: 99%

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Dynamic Diagnostic Tests and Numerical Analysis of the Foundations for Turbine Sets

2023

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This paper shows current trends in testing and numerical analysis of dynamic loading in relation to a real frame foundation for a turbogenerator set. The analysis of the machine’s foundations, which are subjected to static and dynamic loads, is a complex problem combining the issues of geotechnics, structural engineering, and vibration theory. The authors present a case study of the assessment of the foundation’s technical condition. The main objective of this study is to perform and compare experimental and numerical dynamic analysis which includes the measurement of the acceleration, speed, and amplitude of the natural vibrations of the foundation during the operational speed of the turbogenerator. In addition, auxiliary material tests were carried out to fully diagnose the foundation and obtain the material properties required for the numerical analysis. They included both destructive and non-destructive of concrete strength, the evaluation of the degree of its carbonation, and the scanning of the reinforcement distribution. The research presented in the paper is intended to facilitate the preparation of appropriate data for the design of the foundation renovation and strengthening.

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Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Dynamic Diagnostic Tests and Numerical Analysis of the Foundations for Turbine Sets

2023

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“…Cover meter devices aim to measure non-destructively the thickness of concrete cover and the bar diameter in reinforced concrete structures. The presence of reinforcement in concrete can be detected by measuring and analyzing the electromagnetic field of reinforcement induced by the cover meter [2].…”

Section: Electromagnetic Methods For Detection Of Concrete Reinforcementmentioning

confidence: 99%

Determining the Location of Steel Reinforcement in Thick Concrete Walls by Non-Destructive Inspection

Al-Neshawy,

Puttonen

2023

Nordic Concrete Research

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Concrete cover is the thickness of the concrete layer that protects the reinforcing steel bars (rebar) within a reinforced concrete structure. It acts as a barrier against external elements such as moisture, chemicals, and environmental factors, safeguarding the rebar from corrosion. Concrete cover measurement is performed by using various nondestructive tests such as GPS (Ground Penetrating Radar), electromagnetic test and ultrasonic. The main benefit of the concrete cover thickness measurement is to explain the causes of corrosion and identify areas that have the capability to corrode faster. This paper discusses the possibilities to measure the concrete cover depth and determine the location of steel bars of a thick-walled concrete structure by using different nondestructive testing methods. The methods studied are a concrete cover meter, Ground Penetrating Radar, which is based on propagation radar waves in concrete, and Ultrasonic Pulse Echo tomography based on stress waves produced by ultrasonic pulses. The paper demonstrates the use of these methods for in-situ measurements on a thick-walled reinforced concrete structure. The concrete cover depth and the location for the reinforcement bars received by different methods are compared and the strong and weak points of the methods are discussed. The results indicate that the concrete cover meter is suitable for measuring the thickness of concrete cover, while the Ground Penetrating Radar and the Ultrasonic Pulse Echo device were able to identify and locate the reinforcement bars position in the concrete structure.

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“…It included a thorough photographic documentation, identification of the main architectural and constructional aspects, as well as documentation of the building materials and techniques confronted [24][25][26]. To achieve this, nondestructive techniques were applied, including Schmidt hammer rebound tests for estimating the materials' strength and profometer measurements for the detection of reinforcement in the concrete elements [26][27][28]. The latter were implemented in various locations of the building, and in each location multiple values were recorded (4)(5)(6).…”

Section: Methodsmentioning

confidence: 99%

Architectural, Constructional and Structural Aspects of a Historic School in Greece. The Case of the Elementary School in Arnaia, Chalkidiki

2020

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Historic school buildings were built during the end of the 19th century and into the beginning of the 20th century, using the traditional and locally available building materials and techniques, and most of them still function as schools. Because of the requirements arising from their constant use, there is an intense interest in their structural and energy integration, while there is limited research on the tangible and intangible values they encompass. In this study, an effort has been made to assess the historical, architectural, constructional and structural aspects of a historic school building located in the town of Arnaia, in the mountainous part of Chalkidiki peninsula, Northern Greece. The study included on-site inspection, architectural overview, determination and mapping of the constructional materials and techniques applied, as well as investigation of the preservation state of the building. Additionally, a structural analysis of the system was performed through a three-dimensional finite element model. All research data was comparatively evaluated, in order to identify the principles governing its physiognomy and structure. The objective of the study was therefore to analyze the significance and technological aspects of this unrecognized part of the common European built heritage that should be further assessed and acknowledged as a heritage asset.

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Experimental measurement of the diameter and cover depth of steel reinforcement using an electromagnetic concrete cover meter

Cited by 4 publications

References 2 publications

Dynamic Diagnostic Tests and Numerical Analysis of the Foundations for Turbine Sets

Dynamic Diagnostic Tests and Numerical Analysis of the Foundations for Turbine Sets

Determining the Location of Steel Reinforcement in Thick Concrete Walls by Non-Destructive Inspection

Architectural, Constructional and Structural Aspects of a Historic School in Greece. The Case of the Elementary School in Arnaia, Chalkidiki

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