Evaluation of internal void related defects in reinforced concrete slab using electromagnetic wave properties
- Authors
- Kang, Minju; Hong, Jinyoung; Lee, Taemin; Kim, Doyun; Choi, Hajin
- Issue Date
- Jul-2024
- Publisher
- SPRINGER
- Keywords
- GPR; concrete defect; electromagnetic wave; relative permittivity; non-destructive testing (NDT)
- Citation
- EARTHQUAKE ENGINEERING AND ENGINEERING VIBRATION, v.23, no.3, pp 525 - 535
- Pages
- 11
- Journal Title
- EARTHQUAKE ENGINEERING AND ENGINEERING VIBRATION
- Volume
- 23
- Number
- 3
- Start Page
- 525
- End Page
- 535
- URI
- https://scholarworks.bwise.kr/ssu/handle/2018.sw.ssu/49885
- DOI
- 10.1007/s11803-024-2253-9
- ISSN
- 1671-3664
1993-503X
- Abstract
- This study aims to develop a damage-detection algorithm based on the electromagnetic wave properties inside a reinforced concrete structure. The proposed method involves employing two algorithms based on data measured using ground-penetrating radar-a common electromagnetic wave method in civil engineering. The possible defect area was identified based on the energy dissipated by the damage in the frequency-wavenumber domain, with the damage localized using the calculated relative permittivity of the measurements. The proposed method was verified through a finite difference time-domain-based numerical analysis and a testing slab with artificial damage. As a result of verification, the proposed method quickly identified the presence of damage inside the concrete, especially for honeycomb-like defects located at the top of the rebar. This study has practical significance in scanning structures over a large area more quickly than other non-destructive testing methods, such as ultrasonic methods.
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