Frequency dependent permittivity of soil and bentonite: for lightning protection and high frequency earthing systems
This paper presents the frequency dependent permittivity of a selected type of soil, bentonite and four of their mixes by weight. The permittivity at a low frequencies, vary significantly with moisture content in the cases of both sand and bentonite. For dry sand, bentonite and all bentonite mixes,...
| Main Authors: | , , , , |
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| Format: | Conference or Workshop Item |
| Language: | English |
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IEEE
2019
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| Online Access: | http://psasir.upm.edu.my/id/eprint/78099/ http://psasir.upm.edu.my/id/eprint/78099/1/Frequency%20dependent%20permittivity%20of%20soil%20and%20bentonite%20for%20lightning%20protection%20and%20high%20frequency%20earthing%20systems.pdf |
| _version_ | 1848858413309624320 |
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| author | Sabry, Riyadh Z. Gomes, Ashen Gomes, Chandima Ab Kadir, Mohd Zainal Abidin Misron, Norhisam |
| author_facet | Sabry, Riyadh Z. Gomes, Ashen Gomes, Chandima Ab Kadir, Mohd Zainal Abidin Misron, Norhisam |
| author_sort | Sabry, Riyadh Z. |
| building | UPM Institutional Repository |
| collection | Online Access |
| description | This paper presents the frequency dependent permittivity of a selected type of soil, bentonite and four of their mixes by weight. The permittivity at a low frequencies, vary significantly with moisture content in the cases of both sand and bentonite. For dry sand, bentonite and all bentonite mixes, the permittivity shows a rapid drop with the increment of frequency from near 0 Hz to 0.6 kHz, followed by a moderate decrement up to about 10-20 kHz. All parameters have rather insignificant variation after about 50 kHz and level of around 1 MHz. These outcomes provide some key information to analyze the behavior of bentonite based backfill materials that are widely used in electrical earthing networks, especially in the case of high frequency earthing and lightning protection systems. |
| first_indexed | 2025-11-15T12:13:03Z |
| format | Conference or Workshop Item |
| id | upm-78099 |
| institution | Universiti Putra Malaysia |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-15T12:13:03Z |
| publishDate | 2019 |
| publisher | IEEE |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | upm-780992020-06-03T06:31:58Z http://psasir.upm.edu.my/id/eprint/78099/ Frequency dependent permittivity of soil and bentonite: for lightning protection and high frequency earthing systems Sabry, Riyadh Z. Gomes, Ashen Gomes, Chandima Ab Kadir, Mohd Zainal Abidin Misron, Norhisam This paper presents the frequency dependent permittivity of a selected type of soil, bentonite and four of their mixes by weight. The permittivity at a low frequencies, vary significantly with moisture content in the cases of both sand and bentonite. For dry sand, bentonite and all bentonite mixes, the permittivity shows a rapid drop with the increment of frequency from near 0 Hz to 0.6 kHz, followed by a moderate decrement up to about 10-20 kHz. All parameters have rather insignificant variation after about 50 kHz and level of around 1 MHz. These outcomes provide some key information to analyze the behavior of bentonite based backfill materials that are widely used in electrical earthing networks, especially in the case of high frequency earthing and lightning protection systems. IEEE 2019 Conference or Workshop Item PeerReviewed text en http://psasir.upm.edu.my/id/eprint/78099/1/Frequency%20dependent%20permittivity%20of%20soil%20and%20bentonite%20for%20lightning%20protection%20and%20high%20frequency%20earthing%20systems.pdf Sabry, Riyadh Z. and Gomes, Ashen and Gomes, Chandima and Ab Kadir, Mohd Zainal Abidin and Misron, Norhisam (2019) Frequency dependent permittivity of soil and bentonite: for lightning protection and high frequency earthing systems. In: 15th International Symposium on Lightning Protection (SIPDA 2019), 30 Sept.-4 Oct. 2019, Sao Paulo, Brazil. . 10.1109/SIPDA47030.2019.8951732 |
| spellingShingle | Sabry, Riyadh Z. Gomes, Ashen Gomes, Chandima Ab Kadir, Mohd Zainal Abidin Misron, Norhisam Frequency dependent permittivity of soil and bentonite: for lightning protection and high frequency earthing systems |
| title | Frequency dependent permittivity of soil and bentonite: for lightning protection and high frequency earthing systems |
| title_full | Frequency dependent permittivity of soil and bentonite: for lightning protection and high frequency earthing systems |
| title_fullStr | Frequency dependent permittivity of soil and bentonite: for lightning protection and high frequency earthing systems |
| title_full_unstemmed | Frequency dependent permittivity of soil and bentonite: for lightning protection and high frequency earthing systems |
| title_short | Frequency dependent permittivity of soil and bentonite: for lightning protection and high frequency earthing systems |
| title_sort | frequency dependent permittivity of soil and bentonite: for lightning protection and high frequency earthing systems |
| url | http://psasir.upm.edu.my/id/eprint/78099/ http://psasir.upm.edu.my/id/eprint/78099/ http://psasir.upm.edu.my/id/eprint/78099/1/Frequency%20dependent%20permittivity%20of%20soil%20and%20bentonite%20for%20lightning%20protection%20and%20high%20frequency%20earthing%20systems.pdf |