Water-entry pressure in water repellent soils: a review
Water repellent soils can be naturally promoted (e.g. after wildfires) or synthetically induced by mixing with hydrophobic compounds (e.g. polydimethylsiloxane). The study of soil water repellency has lasted for over one century which implied the significant effect of soil water repellency on water...
| 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/2020/55/e3sconf_e-unsat2020_02030.pdf |
| _version_ | 1819290333322674176 |
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| author | Xing Xin Lourenço Sérgio D.N. |
| author_facet | Xing Xin Lourenço Sérgio D.N. |
| author_sort | Xing Xin |
| collection | DOAJ |
| description | Water repellent soils can be naturally promoted (e.g. after wildfires) or synthetically induced by mixing with hydrophobic compounds (e.g. polydimethylsiloxane). The study of soil water repellency has lasted for over one century which implied the significant effect of soil water repellency on water infiltration, evaporation, soil strength, and soil stability. Water repellent soils can also be exploited by geotechnical engineers to offer novel and economical solutions for ground infrastructure. This paper synthesizes different methods for assessing soil water repellency based on varied indexes (e.g. contact angle, time for a drop to infiltrate) and with a focus on water entry pressure. Measurements of these parameters in synthetic water- repellent sands were taken, some results of which are summarized with discussion of key factors affecting water repellency. A comparison of these methods shows that water entry pressure can be more representative for assessing the water repellency of bulk samples. |
| first_indexed | 2024-12-24T03:21:04Z |
| format | Article |
| id | doaj.art-2aa47699525a4405a2cbc4461aa9a35b |
| institution | Directory Open Access Journal |
| issn | 2267-1242 |
| language | English |
| last_indexed | 2024-12-24T03:21:04Z |
| publishDate | 2020-01-01 |
| publisher | EDP Sciences |
| record_format | Article |
| series | E3S Web of Conferences |
| spelling | doaj.art-2aa47699525a4405a2cbc4461aa9a35b2022-12-21T17:17:30ZengEDP SciencesE3S Web of Conferences2267-12422020-01-011950203010.1051/e3sconf/202019502030e3sconf_e-unsat2020_02030Water-entry pressure in water repellent soils: a reviewXing Xin0Lourenço Sérgio D.N.1Department of Civil Engineering, The University of Hong KongDepartment of Civil Engineering, The University of Hong KongWater repellent soils can be naturally promoted (e.g. after wildfires) or synthetically induced by mixing with hydrophobic compounds (e.g. polydimethylsiloxane). The study of soil water repellency has lasted for over one century which implied the significant effect of soil water repellency on water infiltration, evaporation, soil strength, and soil stability. Water repellent soils can also be exploited by geotechnical engineers to offer novel and economical solutions for ground infrastructure. This paper synthesizes different methods for assessing soil water repellency based on varied indexes (e.g. contact angle, time for a drop to infiltrate) and with a focus on water entry pressure. Measurements of these parameters in synthetic water- repellent sands were taken, some results of which are summarized with discussion of key factors affecting water repellency. A comparison of these methods shows that water entry pressure can be more representative for assessing the water repellency of bulk samples.https://www.e3s-conferences.org/articles/e3sconf/pdf/2020/55/e3sconf_e-unsat2020_02030.pdf |
| spellingShingle | Xing Xin Lourenço Sérgio D.N. Water-entry pressure in water repellent soils: a review E3S Web of Conferences |
| title | Water-entry pressure in water repellent soils: a review |
| title_full | Water-entry pressure in water repellent soils: a review |
| title_fullStr | Water-entry pressure in water repellent soils: a review |
| title_full_unstemmed | Water-entry pressure in water repellent soils: a review |
| title_short | Water-entry pressure in water repellent soils: a review |
| title_sort | water entry pressure in water repellent soils a review |
| url | https://www.e3s-conferences.org/articles/e3sconf/pdf/2020/55/e3sconf_e-unsat2020_02030.pdf |
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