Soil-water characteristics curves of sands under one cycle of drying and wetting
The amount of water retained in a soil in equilibrium at a given matric potential is characterized by the soil-water characteristic curve (SWCC). For six sandy soils with various grain size distributions, SWCCs for drying and wetting were obtained using a flexible wall apparatus. The test data were...
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| Format: | Final Year Project (FYP) |
| Language: | English |
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Nanyang Technological University
2022
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| Online Access: | https://hdl.handle.net/10356/163449 |
| _version_ | 1811694129169563648 |
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| author | Foo, Damien Weng Hai |
| author2 | Leong Eng Choon |
| author_facet | Leong Eng Choon Foo, Damien Weng Hai |
| author_sort | Foo, Damien Weng Hai |
| collection | NTU |
| description | The amount of water retained in a soil in equilibrium at a given matric potential is characterized by the soil-water characteristic curve (SWCC). For six sandy soils with various grain size distributions, SWCCs for drying and wetting were obtained using a flexible wall apparatus. The test data were best fitted to Fredlund and Xing's (1994) equation. When compared to uniform fine-grained sand, sands with better gradation have higher residual matric suction but lower air- and water-entry values. Additional observations were made based on the findings. Findings from this project show that air-entry values (AEV) were higher in sands with lower D10 values. The investigation also discovered a linear relationship between air-entry value and coefficient of uniformity. The water-entry value, on the other hand, has relationship with grain size distribution parameters. The hysteresis between dry and wetting is strongly affect by the grain size, grain size distribution and void ratio. |
| first_indexed | 2024-10-01T07:02:40Z |
| format | Final Year Project (FYP) |
| id | ntu-10356/163449 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T07:02:40Z |
| publishDate | 2022 |
| publisher | Nanyang Technological University |
| record_format | dspace |
| spelling | ntu-10356/1634492022-12-09T01:14:49Z Soil-water characteristics curves of sands under one cycle of drying and wetting Foo, Damien Weng Hai Leong Eng Choon School of Civil and Environmental Engineering CECLEONG@ntu.edu.sg Engineering::Civil engineering The amount of water retained in a soil in equilibrium at a given matric potential is characterized by the soil-water characteristic curve (SWCC). For six sandy soils with various grain size distributions, SWCCs for drying and wetting were obtained using a flexible wall apparatus. The test data were best fitted to Fredlund and Xing's (1994) equation. When compared to uniform fine-grained sand, sands with better gradation have higher residual matric suction but lower air- and water-entry values. Additional observations were made based on the findings. Findings from this project show that air-entry values (AEV) were higher in sands with lower D10 values. The investigation also discovered a linear relationship between air-entry value and coefficient of uniformity. The water-entry value, on the other hand, has relationship with grain size distribution parameters. The hysteresis between dry and wetting is strongly affect by the grain size, grain size distribution and void ratio. Bachelor of Engineering (Civil) 2022-12-07T01:14:17Z 2022-12-07T01:14:17Z 2022 Final Year Project (FYP) Foo, D. W. H. (2022). Soil-water characteristics curves of sands under one cycle of drying and wetting. Final Year Project (FYP), Nanyang Technological University, Singapore. https://hdl.handle.net/10356/163449 https://hdl.handle.net/10356/163449 en CE-26 application/pdf Nanyang Technological University |
| spellingShingle | Engineering::Civil engineering Foo, Damien Weng Hai Soil-water characteristics curves of sands under one cycle of drying and wetting |
| title | Soil-water characteristics curves of sands under one cycle of drying and wetting |
| title_full | Soil-water characteristics curves of sands under one cycle of drying and wetting |
| title_fullStr | Soil-water characteristics curves of sands under one cycle of drying and wetting |
| title_full_unstemmed | Soil-water characteristics curves of sands under one cycle of drying and wetting |
| title_short | Soil-water characteristics curves of sands under one cycle of drying and wetting |
| title_sort | soil water characteristics curves of sands under one cycle of drying and wetting |
| topic | Engineering::Civil engineering |
| url | https://hdl.handle.net/10356/163449 |
| work_keys_str_mv | AT foodamienwenghai soilwatercharacteristicscurvesofsandsunderonecycleofdryingandwetting |