Soil-Water Characteristic Curves of Clays
The drying suction – water content soil-water characteristic curves (SWCCs) of three clays (MX80 bentonite, yellow bentonite, and Speswhite kaolin) were experimentally determined using axis-translation, vapour equilibrium, and osmotic techniques. The shrinkage paths of the clays were established fro...
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| Format: | Article |
| Language: | English |
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Canadian Science Publishing
2014
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| Online Access: | http://umpir.ump.edu.my/id/eprint/10255/1/Soil-Water%20Characteristic%20Curves%20of%20Clays.pdf |
| _version_ | 1825822423389306880 |
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| author | Snehasis, Tripathy Mohd Yuhyi, Mohd Tadza Hywel, Rhys Thomas |
| author_facet | Snehasis, Tripathy Mohd Yuhyi, Mohd Tadza Hywel, Rhys Thomas |
| author_sort | Snehasis, Tripathy |
| collection | UMP |
| description | The drying suction – water content soil-water characteristic curves (SWCCs) of three clays (MX80 bentonite, yellow bentonite, and Speswhite kaolin) were experimentally determined using axis-translation, vapour equilibrium, and osmotic techniques. The shrinkage paths of the clays were established from Clod tests. The suction – water content SWCCs in conjunction with the Clod test results enabled establishing the suction – degree of saturation SWCCs and further determination of the air-entry values (AEVs) of the clays. Chemical analyses of the polyethylene glycol (PEG) solutions in the osmotic tests revealed an imbalance of the osmotic suctions between the expelled and the retained salts on either side of semi-permeable membranes. A decrease in the water content due to an applied suction for clays with significant osmotic efficiencies was explained by two mechanisms. In mechanism 1, the water content decrease prior to the air entry is controlled by the interparticle repulsive pressure, and in mechanism 2, a decrease in the degree of saturation following the air entry is primarily due to the matric suction. The agreements between the AEVs of the clays determined based on the osmotic suctions corresponding to various applied suctions and that determined from the suction – degree of saturation SWCCs were found to be very good. |
| first_indexed | 2024-03-06T11:56:21Z |
| format | Article |
| id | UMPir10255 |
| institution | Universiti Malaysia Pahang |
| language | English |
| last_indexed | 2024-03-06T11:56:21Z |
| publishDate | 2014 |
| publisher | Canadian Science Publishing |
| record_format | dspace |
| spelling | UMPir102552018-02-06T01:44:09Z http://umpir.ump.edu.my/id/eprint/10255/ Soil-Water Characteristic Curves of Clays Snehasis, Tripathy Mohd Yuhyi, Mohd Tadza Hywel, Rhys Thomas TA Engineering (General). Civil engineering (General) The drying suction – water content soil-water characteristic curves (SWCCs) of three clays (MX80 bentonite, yellow bentonite, and Speswhite kaolin) were experimentally determined using axis-translation, vapour equilibrium, and osmotic techniques. The shrinkage paths of the clays were established from Clod tests. The suction – water content SWCCs in conjunction with the Clod test results enabled establishing the suction – degree of saturation SWCCs and further determination of the air-entry values (AEVs) of the clays. Chemical analyses of the polyethylene glycol (PEG) solutions in the osmotic tests revealed an imbalance of the osmotic suctions between the expelled and the retained salts on either side of semi-permeable membranes. A decrease in the water content due to an applied suction for clays with significant osmotic efficiencies was explained by two mechanisms. In mechanism 1, the water content decrease prior to the air entry is controlled by the interparticle repulsive pressure, and in mechanism 2, a decrease in the degree of saturation following the air entry is primarily due to the matric suction. The agreements between the AEVs of the clays determined based on the osmotic suctions corresponding to various applied suctions and that determined from the suction – degree of saturation SWCCs were found to be very good. Canadian Science Publishing 2014 Article PeerReviewed application/pdf en http://umpir.ump.edu.my/id/eprint/10255/1/Soil-Water%20Characteristic%20Curves%20of%20Clays.pdf Snehasis, Tripathy and Mohd Yuhyi, Mohd Tadza and Hywel, Rhys Thomas (2014) Soil-Water Characteristic Curves of Clays. Canadian Geotechnical Journal, 51 (8). pp. 869-883. (Published) http://www.nrcresearchpress.com/doi/abs/10.1139/cgj-2013-0089#.VfD_PBGqqkp DOI: 10.1139/cgj-2013-0089 |
| spellingShingle | TA Engineering (General). Civil engineering (General) Snehasis, Tripathy Mohd Yuhyi, Mohd Tadza Hywel, Rhys Thomas Soil-Water Characteristic Curves of Clays |
| title | Soil-Water Characteristic Curves of Clays |
| title_full | Soil-Water Characteristic Curves of Clays |
| title_fullStr | Soil-Water Characteristic Curves of Clays |
| title_full_unstemmed | Soil-Water Characteristic Curves of Clays |
| title_short | Soil-Water Characteristic Curves of Clays |
| title_sort | soil water characteristic curves of clays |
| topic | TA Engineering (General). Civil engineering (General) |
| url | http://umpir.ump.edu.my/id/eprint/10255/1/Soil-Water%20Characteristic%20Curves%20of%20Clays.pdf |
| work_keys_str_mv | AT snehasistripathy soilwatercharacteristiccurvesofclays AT mohdyuhyimohdtadza soilwatercharacteristiccurvesofclays AT hywelrhysthomas soilwatercharacteristiccurvesofclays |