An impervious sand used as separation layer in collapsible loess embankment: A case study
In this study, a novel impervious sand is modified from the desert sand. It has a good waterproofing and thermal-isolating capacity. Hence. it was used as the separation layer in the collapsible losses embankment to prolong the service life. It has the advantages of lightweight, good waterproofing e...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2022-06-01
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| Series: | Case Studies in Construction Materials |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2214509522002388 |
| _version_ | 1811337736116764672 |
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| author | Haihong Zhang Shanzhi Fan Lei Lang Kang Gu Rui Shi Ke Xue Desheng Li |
| author_facet | Haihong Zhang Shanzhi Fan Lei Lang Kang Gu Rui Shi Ke Xue Desheng Li |
| author_sort | Haihong Zhang |
| collection | DOAJ |
| description | In this study, a novel impervious sand is modified from the desert sand. It has a good waterproofing and thermal-isolating capacity. Hence. it was used as the separation layer in the collapsible losses embankment to prolong the service life. It has the advantages of lightweight, good waterproofing effect, and cycled usage. The application of impervious sand in collapsible losses embankment could constrain water immigration effectively. Hence, local collapsible losses could be used in highway construction, which means the construction cost could be saved to a large extent. In this study, an artificial fill and impervious sand of different thicknesses were both used in collapsible losses embankment. In-suit monitoring on soil temperature, water content, settlement, and strains of different directions were conducted for more than one year. Hence, the waterproofing effect between the artificial fill and impervious sand could be compared. Furthermore, the collapsible losses embankment side slope stability was calculated through a finite element model. The long-term performance of embankment stability, which took the filling loess’s water content into consideration, was also calculated and compared between the separation layer made of artificial fill or impervious sand. |
| first_indexed | 2024-04-13T17:59:14Z |
| format | Article |
| id | doaj.art-e23a379112484b83a6d9a595ee734736 |
| institution | Directory Open Access Journal |
| issn | 2214-5095 |
| language | English |
| last_indexed | 2024-04-13T17:59:14Z |
| publishDate | 2022-06-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Case Studies in Construction Materials |
| spelling | doaj.art-e23a379112484b83a6d9a595ee7347362022-12-22T02:36:20ZengElsevierCase Studies in Construction Materials2214-50952022-06-0116e01106An impervious sand used as separation layer in collapsible loess embankment: A case studyHaihong Zhang0Shanzhi Fan1Lei Lang2Kang Gu3Rui Shi4Ke Xue5Desheng Li6Gansu Province Transportation Research Institute Group Co., Ltd., Lanzhou, ChinaGansu Province Transportation Research Institute Group Co., Ltd., Lanzhou, ChinaState Key Laboratory of Ocean Engineering, Shanghai Jiao Tong University, Shanghai, ChinaState Key Laboratory of Ocean Engineering, Shanghai Jiao Tong University, Shanghai, ChinaState Key Laboratory of Frozen Soil Engineering, Chinese Academy of Science, Lanzhou, ChinaCollege of Water Conservancy and Hydropower Engineering, Sichuan Agricultural University, Ya’an, ChinaState Key Laboratory of Ocean Engineering, Shanghai Jiao Tong University, Shanghai, China; Department of Civil Engineering, College of Science, Nanjing University of Science and Technology, Nanjing, China; Correspondence to: 200 XiaoLingwei Street, Xuanwu District, Nanjing, Jiangsu, China.In this study, a novel impervious sand is modified from the desert sand. It has a good waterproofing and thermal-isolating capacity. Hence. it was used as the separation layer in the collapsible losses embankment to prolong the service life. It has the advantages of lightweight, good waterproofing effect, and cycled usage. The application of impervious sand in collapsible losses embankment could constrain water immigration effectively. Hence, local collapsible losses could be used in highway construction, which means the construction cost could be saved to a large extent. In this study, an artificial fill and impervious sand of different thicknesses were both used in collapsible losses embankment. In-suit monitoring on soil temperature, water content, settlement, and strains of different directions were conducted for more than one year. Hence, the waterproofing effect between the artificial fill and impervious sand could be compared. Furthermore, the collapsible losses embankment side slope stability was calculated through a finite element model. The long-term performance of embankment stability, which took the filling loess’s water content into consideration, was also calculated and compared between the separation layer made of artificial fill or impervious sand.http://www.sciencedirect.com/science/article/pii/S2214509522002388Collapsible loessLoess PlateauImpervious sandWaterproofing layerHighway embankmentSide slope stability |
| spellingShingle | Haihong Zhang Shanzhi Fan Lei Lang Kang Gu Rui Shi Ke Xue Desheng Li An impervious sand used as separation layer in collapsible loess embankment: A case study Case Studies in Construction Materials Collapsible loess Loess Plateau Impervious sand Waterproofing layer Highway embankment Side slope stability |
| title | An impervious sand used as separation layer in collapsible loess embankment: A case study |
| title_full | An impervious sand used as separation layer in collapsible loess embankment: A case study |
| title_fullStr | An impervious sand used as separation layer in collapsible loess embankment: A case study |
| title_full_unstemmed | An impervious sand used as separation layer in collapsible loess embankment: A case study |
| title_short | An impervious sand used as separation layer in collapsible loess embankment: A case study |
| title_sort | impervious sand used as separation layer in collapsible loess embankment a case study |
| topic | Collapsible loess Loess Plateau Impervious sand Waterproofing layer Highway embankment Side slope stability |
| url | http://www.sciencedirect.com/science/article/pii/S2214509522002388 |
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