Abstract
It has been observed that the corrosion of iron pipes in soil can produce variations in ground conductivity around the pipe, and that the visibility of such pipes to GPR can be greatly reduced. This new investigation and measurement of the permittivity and conductivity of soil contaminated by iron pipe corrosion products produces more accurate knowledge of permittivity and conductivity data and their likely spatial variation with distance from the corroding pipe. The experimental data are the result of monitoring accelerated corrosion over a period of several weeks and using TDR and direct conductivity measurement schemes. FDTD simulations of GPR signals show how the corrosion induced variation in the visibility of the pipe varies with the thickness and shape of the new spatial variations permittivity and conductivity. The results indicate that in the earlier stages of pipe corrosion use of lower GPR frequencies will still detect the pipe, although at lower spatial resolution.
Original language | English |
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Title of host publication | Proceedings of the 15th International Conference on Ground Penetrating Radar, GPR 2014 |
Publisher | Institute of Electrical and Electronics Engineers (IEEE) |
Pages | 381-386 |
Number of pages | 6 |
ISBN (Print) | 9781479967896 |
DOIs | |
Publication status | Published - 1 Dec 2014 |
Event | 15th International Conference on Ground Penetrating Radar, GPR 2014 - Brussels, Belgium Duration: 30 Jun 2014 → 4 Jul 2014 |
Conference
Conference | 15th International Conference on Ground Penetrating Radar, GPR 2014 |
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Country/Territory | Belgium |
City | Brussels |
Period | 30/06/14 → 4/07/14 |
Keywords
- condition monitoring
- corrosion
- GPR
- soil
ASJC Scopus subject areas
- Environmental Engineering
- Computer Networks and Communications
- Signal Processing
- Geotechnical Engineering and Engineering Geology
- Electrical and Electronic Engineering