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Aspects of the Behavior of Clays on Drying

by F. A. M. Marinho, Imperial College of Science, Technology and Medicine, London, United Kingdom,
R. J. Chandler, Imperial College of Science, Technology and Medicine, London, United Kingdom,



Document Type: Proceeding Paper

Part of: Unsaturated Soils

Abstract:

The drying behavior of compacted London Clay mixed with varying proportions of fine sand is examined, measuring the changes of sample volume, water content and suction. Particular attention is paid to the relationships between water content and suction, and to the suctions at which saturated or near-saturated samples commence to desaturate. The relationships between water content and the logarithm of suction are found to be linear, independent of initial water content, confirming earlier work. These relationships vary systematically with the liquid limit of the soil, enabling a general relationship to be proposed for compacted soils. Desaturation of near-saturated soils commences at suctions varying between 8 MPa for pure London Clay with liquid limit of 77%, and 65 kPa for a London Clay/sand mixture having a liquid limit of 24%.

Subject Headings: Soil suction | Soil mixing | Clays | Compacted soils | Water content | Suction | Soil water | London | United Kingdom | Europe

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