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Variation of Degree of Saturation in Unsaturated Silty Soil
Summary This paper presents the results of an experimental study on variation of degree of saturation of a compacted unsaturated silty soil during isotropic loading and unloading. A series of laboratory experiments have been conducted in a double-walled triaxial cell (and a conventional triaxial cell for saturated samples) on samples of a compacted silty soil. In the experiments the soil samples were subjected to isotropic consolidation followed by unloading under constant suction. The results show that during consolidation a significant increase in degree of saturation was observed. In contrast, during subsequent isotropic unloading, where only a very small elastic component of swelling occurred, the changes of degree of saturation were very modest. Comparison has been made between the experimental and theoretical prediction using a relationship proposed in the literature.
Variation of Degree of Saturation in Unsaturated Silty Soil
Summary This paper presents the results of an experimental study on variation of degree of saturation of a compacted unsaturated silty soil during isotropic loading and unloading. A series of laboratory experiments have been conducted in a double-walled triaxial cell (and a conventional triaxial cell for saturated samples) on samples of a compacted silty soil. In the experiments the soil samples were subjected to isotropic consolidation followed by unloading under constant suction. The results show that during consolidation a significant increase in degree of saturation was observed. In contrast, during subsequent isotropic unloading, where only a very small elastic component of swelling occurred, the changes of degree of saturation were very modest. Comparison has been made between the experimental and theoretical prediction using a relationship proposed in the literature.
Variation of Degree of Saturation in Unsaturated Silty Soil
Estabragh, Ali R. (author) / Javadi, Akbar A. (author)
2007-01-01
7 pages
Article/Chapter (Book)
Electronic Resource
English
unsaturated soils , suction , degree of saturation , consolidation , unloading Engineering , Theoretical and Applied Mechanics , Engineering Fluid Dynamics , Geotechnical Engineering & Applied Earth Sciences , Hydrogeology , Appl.Mathematics/Computational Methods of Engineering , Classical Continuum Physics
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