Bridge deck condition assessment by using GPR: a review

Bachiri, Tahar; Khamlichi, Abdellatif; Bezzazi, Mohammed

doi:10.1051/matecconf/201819100004

Cited by 7 publications

(5 citation statements)

References 26 publications

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“…The GPR has also found wider applicability as an electromagnetic device for assessing subsurface characteristics of transportation infrastructure [17]. Given the practical utility of these parameters in the field of civil engineering, it has been demonstrated through numerical analysis that in order to operate the detection by the GPR, it is necessary to choose correctly the central frequency of the antennas [18], [19], [20].…”

Section: Introductionmentioning

confidence: 99%

GPR application in Civil Engineering to search and detect underground Networks

Bachiri¹

2020

IJETER

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The industrial development and the intensive use of urban space lead to several problems in the management and operation of public services such as drinking water networks, sewer, telephone, gas, electricity, street lighting, and various cables and pipes that are buried either at footpaths or roadways. Damage or malfunction of pre-existing public services can potentially cause danger to humans. In order to minimize risks, GPR profiling was constructed as a tool of advanced non-destructive technologies leading to practical solutions to detect buried networks and reduce problems related to the destruction of existing underground utilities. The main objective of this study is to search and identify the various hidden systems to map them and indicate them on-site to avoid possible incidents. The purpose of this operation is to produce GPR profiles on the surface to be examined, while respecting a fairly regular spacing between patterns, using non-destructive techniques such as the GPR and the radio detector.

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Section: Introductionmentioning

confidence: 99%

GPR application in Civil Engineering to search and detect underground Networks

Bachiri¹

2020

IJETER

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“…GPR has emerged as a valuable non-destructive testing technique for assessing the health and condition of reinforced concrete structures. It enables the detection and evaluation of various defects, such as rebar corrosion, concrete corrosion product, and cracks, which are critical in ensuring the structural integrity of these elements [10]. This literature review aims to comprehensively analyze the current state of research on GPR-based corrosion detection and its impact on the reflected wave characteristics in concrete structures.…”

Section: Previous Studiesmentioning

confidence: 99%

“…Researchers have emphasized GPR's effectiveness in mapping and monitoring bridge deck health, detecting deterioration factors, such as corrosion product, rebar corrosion, vertical cracking, and concrete degradation [10]. The effect of work frequency and corrosion layer thickness on the input reflection coefficient has been analyzed to improve the accuracy of GPR-based corrosion detection [23].…”

Section: Previous Studiesmentioning

confidence: 99%

Numerical modelling of bridge deck reinforcement corrosion based on analysis of GPR data

Bachiri,

Khamlichi,

Hamdaoui

et al. 2024

IRASE

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This study explores the impact of corrosion on Ground Penetrating Radar (GPR) responses through practical experiments and numerical modelling, focusing on rebar diameter reduction, corrosion product layer thickness, crack formation and corrosion product filling in vertical and transverse crack. Practical experiments involved GPR testing of reinforced concrete slab. By analyzing B-scans we identify areas with moderate and severe corrosion. Numerical modelling using the Finite Difference Time Domain (FDTD) Method to model GPR signal propagation in a concrete bridge deck with corrosion is applied. Key finding includes a significant 26.70% increase in reflected wave amplitude when corrosion product filling in vertical crack increased by 400%, highlighting its extensive effect on signal GPR propagation. Reduced rebar diameter led to a 9.79% amplitude decrease and a 0.06 ns arrival time delay. Increased corrosion product layer thickness primarily affected arrival time with a 0.06 ns extension but significantly amplified GPR signal amplitude. These findings offer insights for improving GPR based corrosion detection and assessment methods, leading to more robust systems for concrete bridge deck inspection and maintenance. This paper contributes to understanding how corrosion affects the signal that is detected by GPR. This information can be used to improve the way that we manage and assess corrosion in concrete bridge deck.

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“…The GPR makes it possible to reveal in a nondestructive way the presence and the position of buried objects through the reflection of electromagnetic waves [4]. Previous studies have also demonstrated its capacity to detect armature corrosion [5].…”

Section: Introductionmentioning

confidence: 99%

Examinating GPR based detection of defects in RC builds

Bachiri

Hamdaoui²,

Alsharahi³

et al. 2022

MATEC Web Conf.

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The Ground Penetrating Radar is a device which can be used for non-destructive inspection of civil engineering structures such as reinforced concrete buildings and bridges. Because of its ability to detect defects and provide reliable image of the substructure, it has attracted large interest from both practitioners and researchers in the field of health monitoring of vital structures. The objective of this work is to analyze detectability of defects in reinforced concrete structures by considering the presence of a defect which can attenuate GPR signals. Defects embedded in the structure can in fact cause significant changes in the intensity of the hyperbolic like reflection patterns generated by reinforcement bars. To assess this effect, a numerical simulation study of GPR data was conducted by using the GprMax software which is based on finite differences time domain method. The proposed approach has enabled to study the modification affecting the radargram due to the presence of a defect of finite size.

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Bridge deck condition assessment by using GPR: a review

Cited by 7 publications

References 26 publications

GPR application in Civil Engineering to search and detect underground Networks

GPR application in Civil Engineering to search and detect underground Networks

Numerical modelling of bridge deck reinforcement corrosion based on analysis of GPR data

Examinating GPR based detection of defects in RC builds

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