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Title |
Application of Ground Penetrating Radars (GPR) in Concrete Bridges: A Review
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DOI |
https://doi.org/10.4334/JKCI.2024.36.4.329 |
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Keywords |
지표투과레이더(GPR), 비파괴검사(NDT), 교량구조물
ground penetrating radar (GPR), nondestructive testing (NDT), bridge structures |
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Abstract |
Due to recent structural safety issues stemming from catastrophic collapses of concrete structures in South Korea, the interest in the safety and quality control of aging concrete bridges is increasing. Accordingly, Ground Penetrating Radar (GPR), a non-destructive testing technology, is emerging as a promising tool for diagnosing concrete structures. In this work, the research status of laboratory and field application of GPR technology for concrete bridge diagnosis was systematically investigated and analyzed. In addition, literature on the use of GPR for non-destructive estimation of concrete compressive strength and recent advancements in GPR signal processing techniques was reviewed. It was concluded that GPR is an effective tool for the non-destructive and accurate diagnosis of large concrete bridge structures. In addition, the possibility of developing a technique for non-destructively estimating the compressive strength of concrete was confirmed by utilizing the correlation between the electromagnetic wave characteristics of GPR and the water content during the hydration (strength development) process of concrete. Based on the results of this study, it is expected that GPR will be used to evaluate and improve the integrity of concrete bridges in the future.
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