Effect of silt content in filling sand on the geotubes dewatering performance by hanging bag tests
| Autor: | Wansheng Wang, Xiaolei Man, Shuigen Hu |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
hanging bag test
Mechanical Engineering Materials Science (miscellaneous) silt content median particle size Silt geotube Two stages Dewatering Soil loss lcsh:Technology (General) lcsh:T1-995 Environmental science Geotechnical engineering Particle size non-uniformity coefficient Instrumentation dewatering |
| Zdroj: | Journal of Measurements in Engineering, Vol 8, Iss 3, Pp 132-141 (2020) |
| ISSN: | 2424-4635 2335-2124 |
| DOI: | 10.21595/jme.2020.21645 |
| Popis: | The dewatering performance of geotubes is affected by the silt content of filling sand, which limits the construction speed of geotubes. In order to evaluate the effect of silt content of filling sand on the dewatering performance of geotubes, a series of hanging bag tests were carried-out by varying filling sand with five different silt content. In the tests, the variation of the water loss, soil loss and soil particles grading with time were studied. And the relationship between the silt content and the rate of water loss was analyzed. The research results show that the dewatering process could be divided into three stages, when the powder content is more than 20 %. Otherwise, the dewatering process only includes two stages. Three different bell-shaped function relationships exist between the percentage content of silt particles, median particle size and non-uniformity coefficient with the rate of water loss respectively. Furthermore, the different relationships were simplified into 3 different linear functions correspondingly. The research results could be used as a reference for geotubes engineering practice. |
| Databáze: | OpenAIRE |
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