Variability of Bimodal Soil-Water Characteristic Curves under Different Confining Pressures
Soils with two subcurves of Soil-Water Characteristic Curve (SWCC) (dual porosity soils) might be found within various residual soils. Soils located in different depths have different confining pressure. Residual soils are found in the unsaturated zones due to the deep groundwater table. There is a...
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| Format: | Article |
| Language: | English |
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Wiley
2021-01-01
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| Series: | Applied and Environmental Soil Science |
| Online Access: | http://dx.doi.org/10.1155/2021/5569491 |
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| author | Achmad Syarifudin Alfrendo Satyanaga |
| author_facet | Achmad Syarifudin Alfrendo Satyanaga |
| author_sort | Achmad Syarifudin |
| collection | DOAJ |
| description | Soils with two subcurves of Soil-Water Characteristic Curve (SWCC) (dual porosity soils) might be found within various residual soils. Soils located in different depths have different confining pressure. Residual soils are found in the unsaturated zones due to the deep groundwater table. There is a linear correlation between the hydraulic properties of the soil in the unsaturated area and that of its unsaturated properties. This study aims to examine the influence of the confining pressure towards the SWCC of dual porosity soil. The scope of this study involves measurements of the drying and wetting SWCC using Tempe cells, pressure plates, and an advanced triaxial apparatus. In this study, the mathematical equations were developed to explain the effect of confining pressure on SWCC. The experimental results indicated that the dual porosity soil exhibits bimodal characteristics for the drying curve of SWCC and it exhibits unimodal characteristics for the wetting curve of SWCC. As the confining pressure increases, the air entry values, the inflection points, and the standard deviation of drying SWCC increase. In addition, the hysteresis of SWCC is becoming smaller with the increasing confining pressure. |
| format | Article |
| id | doaj-art-925749c17dda495dbb2e91a1477c7fab |
| institution | Kabale University |
| issn | 1687-7667 1687-7675 |
| language | English |
| publishDate | 2021-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Applied and Environmental Soil Science |
| spelling | doaj-art-925749c17dda495dbb2e91a1477c7fab2025-02-03T06:12:52ZengWileyApplied and Environmental Soil Science1687-76671687-76752021-01-01202110.1155/2021/55694915569491Variability of Bimodal Soil-Water Characteristic Curves under Different Confining PressuresAchmad Syarifudin0Alfrendo Satyanaga1Civil and Environmental Engineering Faculty, Universitas Bina Darma, Palembang 30264, IndonesiaCivil and Environmental Engineering Faculty, Universitas Bina Darma, Palembang 30264, IndonesiaSoils with two subcurves of Soil-Water Characteristic Curve (SWCC) (dual porosity soils) might be found within various residual soils. Soils located in different depths have different confining pressure. Residual soils are found in the unsaturated zones due to the deep groundwater table. There is a linear correlation between the hydraulic properties of the soil in the unsaturated area and that of its unsaturated properties. This study aims to examine the influence of the confining pressure towards the SWCC of dual porosity soil. The scope of this study involves measurements of the drying and wetting SWCC using Tempe cells, pressure plates, and an advanced triaxial apparatus. In this study, the mathematical equations were developed to explain the effect of confining pressure on SWCC. The experimental results indicated that the dual porosity soil exhibits bimodal characteristics for the drying curve of SWCC and it exhibits unimodal characteristics for the wetting curve of SWCC. As the confining pressure increases, the air entry values, the inflection points, and the standard deviation of drying SWCC increase. In addition, the hysteresis of SWCC is becoming smaller with the increasing confining pressure.http://dx.doi.org/10.1155/2021/5569491 |
| spellingShingle | Achmad Syarifudin Alfrendo Satyanaga Variability of Bimodal Soil-Water Characteristic Curves under Different Confining Pressures Applied and Environmental Soil Science |
| title | Variability of Bimodal Soil-Water Characteristic Curves under Different Confining Pressures |
| title_full | Variability of Bimodal Soil-Water Characteristic Curves under Different Confining Pressures |
| title_fullStr | Variability of Bimodal Soil-Water Characteristic Curves under Different Confining Pressures |
| title_full_unstemmed | Variability of Bimodal Soil-Water Characteristic Curves under Different Confining Pressures |
| title_short | Variability of Bimodal Soil-Water Characteristic Curves under Different Confining Pressures |
| title_sort | variability of bimodal soil water characteristic curves under different confining pressures |
| url | http://dx.doi.org/10.1155/2021/5569491 |
| work_keys_str_mv | AT achmadsyarifudin variabilityofbimodalsoilwatercharacteristiccurvesunderdifferentconfiningpressures AT alfrendosatyanaga variabilityofbimodalsoilwatercharacteristiccurvesunderdifferentconfiningpressures |