A new theory for membrane efficiency coefficient of compacted clay
A new method for calculation the membrane efficiency coefficient w of compacted clay is proposed in this paper. The influence of fixed negative charge on the surface of clay minerals is considered. What’s more, the change of porosity during deformation is considered. Based on the chemical potential...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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EDP Sciences
2020-01-01
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| Series: | E3S Web of Conferences |
| Online Access: | https://www.e3s-conferences.org/articles/e3sconf/pdf/2020/78/e3sconf_iseese2020_02033.pdf |
| _version_ | 1818419047244496896 |
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| author | Song Zhaoyang Wei Changfu Zhao Chenggang |
| author_facet | Song Zhaoyang Wei Changfu Zhao Chenggang |
| author_sort | Song Zhaoyang |
| collection | DOAJ |
| description | A new method for calculation the membrane efficiency coefficient w of compacted clay is proposed in this paper. The influence of fixed negative charge on the surface of clay minerals is considered. What’s more, the change of porosity during deformation is considered. Based on the chemical potential of specimens, the true ion concentration in pore-water is obtained. Based on the true ion concentration in pore water, the disjoining pressure considering fixed negative charge inside soils and the change of void ratio is proposed. A new calculation method for the membrane efficiency coefficient of compacted clay is established. The test data of w considering different porosity are calculated and the calculated results are compared with the traditional calculation methods. The new calculation methods of w provide a more physical-based theory for environmental geotechnical engineering. |
| first_indexed | 2024-12-14T12:32:21Z |
| format | Article |
| id | doaj.art-e6f6c83af03b460bb580e99dc9e0e4ec |
| institution | Directory Open Access Journal |
| issn | 2267-1242 |
| language | English |
| last_indexed | 2024-12-14T12:32:21Z |
| publishDate | 2020-01-01 |
| publisher | EDP Sciences |
| record_format | Article |
| series | E3S Web of Conferences |
| spelling | doaj.art-e6f6c83af03b460bb580e99dc9e0e4ec2022-12-21T23:01:08ZengEDP SciencesE3S Web of Conferences2267-12422020-01-012180203310.1051/e3sconf/202021802033e3sconf_iseese2020_02033A new theory for membrane efficiency coefficient of compacted claySong Zhaoyang0Wei Changfu1Zhao Chenggang2School of Civil Engineering, Beijing Jiaotong UniversityState Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of SciencesSchool of Civil Engineering, Beijing Jiaotong UniversityA new method for calculation the membrane efficiency coefficient w of compacted clay is proposed in this paper. The influence of fixed negative charge on the surface of clay minerals is considered. What’s more, the change of porosity during deformation is considered. Based on the chemical potential of specimens, the true ion concentration in pore-water is obtained. Based on the true ion concentration in pore water, the disjoining pressure considering fixed negative charge inside soils and the change of void ratio is proposed. A new calculation method for the membrane efficiency coefficient of compacted clay is established. The test data of w considering different porosity are calculated and the calculated results are compared with the traditional calculation methods. The new calculation methods of w provide a more physical-based theory for environmental geotechnical engineering.https://www.e3s-conferences.org/articles/e3sconf/pdf/2020/78/e3sconf_iseese2020_02033.pdf |
| spellingShingle | Song Zhaoyang Wei Changfu Zhao Chenggang A new theory for membrane efficiency coefficient of compacted clay E3S Web of Conferences |
| title | A new theory for membrane efficiency coefficient of compacted clay |
| title_full | A new theory for membrane efficiency coefficient of compacted clay |
| title_fullStr | A new theory for membrane efficiency coefficient of compacted clay |
| title_full_unstemmed | A new theory for membrane efficiency coefficient of compacted clay |
| title_short | A new theory for membrane efficiency coefficient of compacted clay |
| title_sort | new theory for membrane efficiency coefficient of compacted clay |
| url | https://www.e3s-conferences.org/articles/e3sconf/pdf/2020/78/e3sconf_iseese2020_02033.pdf |
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