Nondestructive detection of cavities beneath concrete plates using ground penetrating radar and microphone

Kang, Seok Hyon; Yu, Jung-Doung; Han, Woo Jin; Lee, Jong-Sub

doi:10.1016/j.ndteint.2022.102663

Cited by 15 publications

(1 citation statement)

References 27 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…B-scan data are highly efficient in revealing cavities in uniform soil and concrete. However, investigating complex media with reinforcements [7][8] is more challenging, as reflections from the reinforcements tend to dominate the radar signals. An alternative approach suitable for such scenarios involves the application of A-scan data [9][10][11].…”

Section: Introductionmentioning

confidence: 99%

Sensitivity analysis on GPR A-scan data for cavity detection based on area estimation approach

Kim,

Nam,

Youn

2024

IOP Conf. Ser.: Earth Environ. Sci.

View full text Add to dashboard Cite

This study aims to determine the optimal range of A-scan data that enables the detection of cavities in reinforced concrete structures using ground-penetrating radar (GPR). GPR is commonly used as a nondestructive testing method for detecting cavities. However, the identification of cavities using B-scan data is challenging when the cavities are obscured by highly reflective objects such as reinforcements. To address this issue, the B-scan data can be substituted with the A-scan data by adopting an area estimation approach. However, this approach requires the determination of the location and range of the A-scan data. In this study, we analyzed GPR A-scan data obtained from a large-scale concrete block with cavities adjacent to a complex reinforcement layout. The location and range were varied to investigate their effects on the accuracy of object detection using the area estimation approach, and an appropriate range was suggested.

show abstract