Experimental Study on the Variation of Soil Dielectric Permittivity under the Influence of Soil Compaction and Water Content
The dielectric permittivity of common soils is mainly controlled by water content and porosity, while the latter is closely related to the characteristics of compaction. By studying the changes in dielectric permittivity of soil samples with different soil water content and compaction levels, the in...
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| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2022-01-01
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| Series: | Geofluids |
| Online Access: | http://dx.doi.org/10.1155/2022/3575541 |
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| _version_ | 1850173780888911872 |
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| author | Jun Hu Xinbin Wang Fujun Zhang Yuanke Zhao |
| author_facet | Jun Hu Xinbin Wang Fujun Zhang Yuanke Zhao |
| author_sort | Jun Hu |
| collection | DOAJ |
| description | The dielectric permittivity of common soils is mainly controlled by water content and porosity, while the latter is closely related to the characteristics of compaction. By studying the changes in dielectric permittivity of soil samples with different soil water content and compaction levels, the influence of the controlling factors on the relationship model between soil water content and dielectric permittivity can be evaluated. In this paper, network analyzer was used to measure the dielectric permittivity of 7 groups of soil samples with gravimetric water content ranging from 8.09% to 14.52% and dry density ranging from 1.61 g/cm3 to 1.96 g/cm3. The results show that the dielectric permittivity increases with the increase of water content and dry density, and the effect of water content on permittivity is more significant for soils with higher dry density. Furthermore, when the water content is less than or equal to the optimal water content, Topp formula and the complex refractive index model (CRIM) can better predict the soil dry density. When the water content approaches the saturated state of soil, there is a deviation between the predicted value and the actual value. At last, the modified Topp formula and the complex refractive index model (CRIM) can accurately predict soil compactness. This provides an important basis for rapid detection of water content and compactness of highway subgrade soil by ground penetrating radar. |
| format | Article |
| id | doaj-art-cb8ac7fee4f84e89b05dcc957a0c5960 |
| institution | OA Journals |
| issn | 1468-8123 |
| language | English |
| publishDate | 2022-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Geofluids |
| spelling | doaj-art-cb8ac7fee4f84e89b05dcc957a0c59602025-08-20T02:19:47ZengWileyGeofluids1468-81232022-01-01202210.1155/2022/3575541Experimental Study on the Variation of Soil Dielectric Permittivity under the Influence of Soil Compaction and Water ContentJun Hu0Xinbin Wang1Fujun Zhang2Yuanke Zhao3Gansu Provincial Transportation Research Institute Group Co.Northwest Institute of Eco-Environment and ResourcesGansu Changda Highway Co.Gansu Provincial Transportation Research Institute Group Co.The dielectric permittivity of common soils is mainly controlled by water content and porosity, while the latter is closely related to the characteristics of compaction. By studying the changes in dielectric permittivity of soil samples with different soil water content and compaction levels, the influence of the controlling factors on the relationship model between soil water content and dielectric permittivity can be evaluated. In this paper, network analyzer was used to measure the dielectric permittivity of 7 groups of soil samples with gravimetric water content ranging from 8.09% to 14.52% and dry density ranging from 1.61 g/cm3 to 1.96 g/cm3. The results show that the dielectric permittivity increases with the increase of water content and dry density, and the effect of water content on permittivity is more significant for soils with higher dry density. Furthermore, when the water content is less than or equal to the optimal water content, Topp formula and the complex refractive index model (CRIM) can better predict the soil dry density. When the water content approaches the saturated state of soil, there is a deviation between the predicted value and the actual value. At last, the modified Topp formula and the complex refractive index model (CRIM) can accurately predict soil compactness. This provides an important basis for rapid detection of water content and compactness of highway subgrade soil by ground penetrating radar.http://dx.doi.org/10.1155/2022/3575541 |
| spellingShingle | Jun Hu Xinbin Wang Fujun Zhang Yuanke Zhao Experimental Study on the Variation of Soil Dielectric Permittivity under the Influence of Soil Compaction and Water Content Geofluids |
| title | Experimental Study on the Variation of Soil Dielectric Permittivity under the Influence of Soil Compaction and Water Content |
| title_full | Experimental Study on the Variation of Soil Dielectric Permittivity under the Influence of Soil Compaction and Water Content |
| title_fullStr | Experimental Study on the Variation of Soil Dielectric Permittivity under the Influence of Soil Compaction and Water Content |
| title_full_unstemmed | Experimental Study on the Variation of Soil Dielectric Permittivity under the Influence of Soil Compaction and Water Content |
| title_short | Experimental Study on the Variation of Soil Dielectric Permittivity under the Influence of Soil Compaction and Water Content |
| title_sort | experimental study on the variation of soil dielectric permittivity under the influence of soil compaction and water content |
| url | http://dx.doi.org/10.1155/2022/3575541 |
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