Matrix Suction Evaluation of Soil-Rock Mixture Based on Electrical Resistivity
The soil-rock mixture is an important construction material in practical engineering. Its physical properties, especially soil-water properties, are particularly important for on-site construction, while both matrix suction and electrical resistivity in unsaturated soils depend on the magnitude of m...
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MDPI AG
2021-10-01
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| Series: | Water |
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| Online Access: | https://www.mdpi.com/2073-4441/13/20/2937 |
| _version_ | 1797512903409008640 |
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| author | Kui Wang Zhengting Xia Xue Li |
| author_facet | Kui Wang Zhengting Xia Xue Li |
| author_sort | Kui Wang |
| collection | DOAJ |
| description | The soil-rock mixture is an important construction material in practical engineering. Its physical properties, especially soil-water properties, are particularly important for on-site construction, while both matrix suction and electrical resistivity in unsaturated soils depend on the magnitude of moisture content, and a certain relationship can be established between the two physical quantities. Therefore, in this paper, we designed a matrix suction–electrical resistivity synergistic test device and conducted indoor physical tests on common soil-rock mixtures in the Chongqing area to investigate the correlation between matrix suction and electrical resistivity in soil-rock mixtures. The electrical resistivity comprehensive parameter was used to represent the electrical resistivity characteristics of rock and soil. Based on the experimental results, a matrix suction–electrical resistivity comprehensive parameter model applicable to soil-rock mixtures was established, and the sensitivity analysis of the model parameters was carried out. The results show that the soil-water characteristic curve of the soil-rock mixture has a double-step shape, and the shape of the curve under different compaction degrees is similar. The matrix suction and mass moisture content of the soil-rock mixture were positively correlated with the compaction degree. There was good consistency between the experimentally measured matrix suction and the matrix suction reflected by the electrical resistivity in the model. Moreover, the model curve was able to reflect the drainage process of pores in the soil for soil–stone mixtures with a bimodal pore size distribution, thus providing a new way to measure the matrix suction of unsaturated soil–stone mixtures in practical engineering. |
| first_indexed | 2024-03-10T06:07:37Z |
| format | Article |
| id | doaj.art-1de63de75b10427bb019c96115f93e64 |
| institution | Directory Open Access Journal |
| issn | 2073-4441 |
| language | English |
| last_indexed | 2024-03-10T06:07:37Z |
| publishDate | 2021-10-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Water |
| spelling | doaj.art-1de63de75b10427bb019c96115f93e642023-11-22T20:22:56ZengMDPI AGWater2073-44412021-10-011320293710.3390/w13202937Matrix Suction Evaluation of Soil-Rock Mixture Based on Electrical ResistivityKui Wang0Zhengting Xia1Xue Li2Engineering Research Center of Diagnosis Technology of Hydro-Construction, Chongqing Jiaotong University, Chongqing 400074, ChinaEngineering Research Center of Diagnosis Technology of Hydro-Construction, Chongqing Jiaotong University, Chongqing 400074, ChinaEngineering Research Center of Diagnosis Technology of Hydro-Construction, Chongqing Jiaotong University, Chongqing 400074, ChinaThe soil-rock mixture is an important construction material in practical engineering. Its physical properties, especially soil-water properties, are particularly important for on-site construction, while both matrix suction and electrical resistivity in unsaturated soils depend on the magnitude of moisture content, and a certain relationship can be established between the two physical quantities. Therefore, in this paper, we designed a matrix suction–electrical resistivity synergistic test device and conducted indoor physical tests on common soil-rock mixtures in the Chongqing area to investigate the correlation between matrix suction and electrical resistivity in soil-rock mixtures. The electrical resistivity comprehensive parameter was used to represent the electrical resistivity characteristics of rock and soil. Based on the experimental results, a matrix suction–electrical resistivity comprehensive parameter model applicable to soil-rock mixtures was established, and the sensitivity analysis of the model parameters was carried out. The results show that the soil-water characteristic curve of the soil-rock mixture has a double-step shape, and the shape of the curve under different compaction degrees is similar. The matrix suction and mass moisture content of the soil-rock mixture were positively correlated with the compaction degree. There was good consistency between the experimentally measured matrix suction and the matrix suction reflected by the electrical resistivity in the model. Moreover, the model curve was able to reflect the drainage process of pores in the soil for soil–stone mixtures with a bimodal pore size distribution, thus providing a new way to measure the matrix suction of unsaturated soil–stone mixtures in practical engineering.https://www.mdpi.com/2073-4441/13/20/2937soil-rock mixtureelectrical resistivitymatrix suctioncompaction degreesmoisture content |
| spellingShingle | Kui Wang Zhengting Xia Xue Li Matrix Suction Evaluation of Soil-Rock Mixture Based on Electrical Resistivity Water soil-rock mixture electrical resistivity matrix suction compaction degrees moisture content |
| title | Matrix Suction Evaluation of Soil-Rock Mixture Based on Electrical Resistivity |
| title_full | Matrix Suction Evaluation of Soil-Rock Mixture Based on Electrical Resistivity |
| title_fullStr | Matrix Suction Evaluation of Soil-Rock Mixture Based on Electrical Resistivity |
| title_full_unstemmed | Matrix Suction Evaluation of Soil-Rock Mixture Based on Electrical Resistivity |
| title_short | Matrix Suction Evaluation of Soil-Rock Mixture Based on Electrical Resistivity |
| title_sort | matrix suction evaluation of soil rock mixture based on electrical resistivity |
| topic | soil-rock mixture electrical resistivity matrix suction compaction degrees moisture content |
| url | https://www.mdpi.com/2073-4441/13/20/2937 |
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