Quantitative Relationship Involving Reinforcing Bar Corrosion and Ground-Penetrating Radar Amplitude

Raju, Rakesh K.; Hasan, Istiaque; Yazdani, Nur

doi:10.14359/51702187

Cited by 5 publications

(6 citation statements)

References 10 publications

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“…[4] corroded three steel rebars with accelerated corrosion, then placed them at different depths under known dielectric constant materials to simulate concrete embedment. The rebars were then scanned using a GPR, which showed an increase in TWTT and a decrease in amplitude, agreeing with the ndings from other researchers [13][14][15]5].…”

Section: Introductionsupporting

confidence: 88%

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Experimental Detection of Embedded Rebar Corrosion in Concrete with Ground Penetrating Radar

Jalal,

Yazdani,

Beneberu

et al. 2024

Preprint

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Reinforced concrete structures have been extensively investigated using Ground Penetrating Radar (GPR) for qualitatively analyzing corrosion-induced degradation. However, no reliable quantitative model exists for the corrosion evaluation of the embedded steel rebars. Such corrosion may significantly impact the strength, serviceability and long-term durability of concrete structures. This study involved an experimental work to determine the relationship between the rebar corrosion quantity and the maximum amplitude as well as the two-way travel time (TWTT) of the GPR electromagnetic wave. A direct current was impressed into embedded steel rebars in concrete beams immersed in a 5% saltwater solution to induce accelerated corrosion. GRP data were collected before saline submersion and at 10-day intervals. A multivariate regression equation with high reliability was developed to estimate corrosion-indued rebar mass loss with independent variables, including concrete cover, rebar diameter, age of the reinforced concrete, concrete strength and GPR scanning parameters.

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Section: Introductionsupporting

confidence: 88%

“…Accelerated corrosion was induced in all 36 specimens by immersion in a 5% (30,000 ppm) NaCl solution [13,24]. Per ASTM A615/A615M-15a speci cations [23], the Grade 60 (A572) rebar was used as anode and the Type 304 stainless steel rebar was used as cathode during the impressed current technique, as shown in Fig.…”

Section: Accelerated Corrosionmentioning

confidence: 99%

Experimental Detection of Embedded Rebar Corrosion in Concrete with Ground Penetrating Radar

Jalal,

Yazdani,

Beneberu

et al. 2024

Preprint

Self Cite

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“…Corrosion products made larger interfaces (corrosion products, concrete, steel, cracks) which affected reflected waves. The increase in wave amplitude with corrosion progress is also revealed in [21,22]. On the contrary, lower amplitude in corrosion process, resulting from increased chloride content and presence of corrosion products, is reported in [11].…”

Section: Effect Of Reinforcement Corrosion On Gpr Datamentioning

confidence: 79%

Primjena georadara u ocjeni stanja betonskih konstrukcija

Baričević¹,

Serdar²

2019

6th Symposium on Doctoral Studies in Civil Engineering

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Maintenance costs of concrete structures can be reduced by efficient and extensive condition assessment. Rapid technological development has allowed application of innovative methodologies for the inspection of structures, which has in turn increased precision and efficiency of inspection activities. Potential for using ground-penetrating radar in the assessment of concrete structures has been considered for a long time and, with the improvement of the analysis tools, its application has been constantly increasing. Ground-penetrating radar is a technique based on emission of electromagnetic waves into the material, and on analysis of reflected waves, resulting in information about location and properties of a particular object. GPR is used for assessing condition of concrete structures, i.e. for the localization of reinforcement, determination of concrete cover, and localization of delamination. Recent research has shown that GPR data could be used for assessing corrosion of reinforcement. Following literature results on GPR-based study of concrete condition, main principles of GPR use are outlined in the paper.

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“…All Ref. [16] and [17,18] are observed an increase in the amplitude of the GPR reflected wave and a decrease in travel time after corroding rebars in concrete. Also, noticed by Ref.…”

Section: Previous Studiesmentioning

confidence: 89%

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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Quantitative Relationship Involving Reinforcing Bar Corrosion and Ground-Penetrating Radar Amplitude

Cited by 5 publications

References 10 publications

Experimental Detection of Embedded Rebar Corrosion in Concrete with Ground Penetrating Radar

Experimental Detection of Embedded Rebar Corrosion in Concrete with Ground Penetrating Radar

Primjena georadara u ocjeni stanja betonskih konstrukcija

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

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