| Issue |
E3S Web Conf.
Volume 276, 2021
2021 5th International Conference on Water Conservancy, Hydropower and Building Engineering (WCHBE 2021)
|
|
|---|---|---|
| Article Number | 02023 | |
| Number of page(s) | 4 | |
| Section | Research on Building Structure and Construction Technology | |
| DOI | https://doi.org/10.1051/e3sconf/202127602023 | |
| Published online | 23 June 2021 | |
Application of ground penetrating radar in concrete defect detection of sluice floor
1 Zhejiang Haichuan Survey Co., Ltd, Hangzhou 310000, China
2 Zhejiang Zhengyuan Hydropower Survey and Design Institute Co., Ltd, Hangzhou 310051, China
3 Zhejiang Design Institute of Water Conservancy and Hydroelectric Power, Hangzhou Zhejiang 310002, China
4 Kunming Engineering Survey Company, Kunming, 650100, China
* Corresponding author: haichuankancha@126.com
The defect investigation of sluice floor is an important measure to ensure the safe operation of the sluice. due to the traditional drilling methods will cause damage to the sluice floor, and the appearance inspection and compressive strength test can not evaluate the internal defects of reinforced concrete in the sluice floor. In this paper, we apply the ground penetrating radar(GPR) to the concrete quality inspection of a sluice gate in a seawall. And we describe the layout, detection principle and data processing flow of GPR. Then we simulate the propagation characteristics of radar electromagnetic wave in the presence of twodimensional electrical anomaly bodies by finite difference method. Through analyzing the amplitude, frequency and event characteristics of reflection wave shown in the gray map of GPR profiles, we determine the dividing line between concrete and muddy silty clay, finding out the density of steel in concrete, framing the location of construction joints and suspected water-filled gaps.
© The Authors, published by EDP Sciences, 2021
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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