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Erschienen in:
2021 | OriginalPaper | Buchkapitel
Theoretical Study on Equilibrium Volume of Clay Sediments in Salt Solutions
verfasst von : Dhanesh Sing Das, Tadikonda Venkata Bharat
Erschienen in: Problematic Soils and Geoenvironmental Concerns
Verlag: Springer Singapore
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Abstract
Expansive clays exhibit some attractive features such as high swelling capacity and very low hydraulic conductivity, for which it is deemed as the most suitable naturally available material for the design of barrier/buffer material in many geo-environmental engineering practices. Equilibrium sediment volume (ESV) is an important surrogate compatibility test used for assessing the expansiveness of soil. It is also utilized for qualitative understanding of the swelling characteristics of clays, mineral identification, and correlating with different geotechnical properties of clays. A detailed understanding on effect of the influencing parameters on ESV provides useful insights into the fundamental behavior of expansive clays. The main objective of this work was to develop a theoretical model for equilibrium sediment volume of clays in the presence of salt solutions using the concept of diffuse double-layer theory. The ESV showed a linear relationship with the specific surface area of soils.