دورية أكاديمية
Effect of contact angle hysteresis on measuring matric suction in unsaturated sandy soil
| العنوان: | Effect of contact angle hysteresis on measuring matric suction in unsaturated sandy soil |
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| المؤلفون: | Chuan Zhang, Haoxun Li, Bo Li, Yukai Zhang, Song Yang, Xiaoshun Li, Huiping Fan, Honggang Zheng |
| المصدر: | Geomatics, Natural Hazards & Risk, Vol 14, Iss 1 (2023) |
| بيانات النشر: | Taylor & Francis Group, 2023. |
| سنة النشر: | 2023 |
| المجموعة: | LCC:Environmental technology. Sanitary engineering LCC:Environmental sciences LCC:Risk in industry. Risk management |
| مصطلحات موضوعية: | Unsaturated soil, matric suction, soil-water characteristic curve (SWCC), contact angle hysteresis, sandy soil, Environmental technology. Sanitary engineering, TD1-1066, Environmental sciences, GE1-350, Risk in industry. Risk management, HD61 |
| الوصف: | AbstractThe contact angle plays an important role in matric suction of unsaturated soils, but few studies consider the effect of contact angle hysteresis on matric suction. In this paper, taking sandy soil as an example, the influence of contact angle hysteresis on the suction of unsaturated soil matric is studied by soil particle model calculation and experimental method. The results show under the same water content condition, the smaller the contact angle is, the larger the matric suction is and the phenomenon of water repellency appears. Under the low water content of unsaturated soil, when the contact angle is less than 90°, it will also produce water repulsion phenomenon, which is different from the hydrophilic characteristics of the contact angle is less than 90° in the capillary law. When the water content is the same, with the increase of contact angle, matric suction will decrease. With the increase of water content, matric suction is not affected by soil contact angle. In the process of dehumidification, the apparent contact angle of the sandy soil with the same water content less than receding contact Angle; there is a difference in matric suction between continuous measurement method and discontinuous measurement method, and continuous measurement’ matric suction greater than discontinuous measurement’ matric suction. This study provides some theoretical basis and reference for the study of matric suction of unsaturated soil. |
| نوع الوثيقة: | article |
| وصف الملف: | electronic resource |
| اللغة: | English |
| تدمد: | 19475705 1947-5713 1947-5705 |
| Relation: | https://doaj.org/toc/1947-5705; https://doaj.org/toc/1947-5713 |
| DOI: | 10.1080/19475705.2023.2232677 |
| URL الوصول: | https://doaj.org/article/838ef84ea08f41b6b2e8434ef96de0dc |
| رقم الأكسشن: | edsdoj.838ef84ea08f41b6b2e8434ef96de0dc |
| قاعدة البيانات: | Directory of Open Access Journals |
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Full Text Finder | تدمد: | 19475705 19475713 |
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| DOI: | 10.1080/19475705.2023.2232677 |