Abstract
Soils in arid and semi-arid zones undergoes volume changes due to wetting. Depending upon the type of clay minerals present, degree of saturation, externally applied load and bonding, the fine grained soils either swells or compresses. One of the parameter that affects the volume change behaviour is the primary clay mineral present in their clay size fraction. A simple method of identifying the same has been presented. It has been brought out that in an expansive unsaturated undisturbed soil, the diffuse double layer repulsion, the stress state and the bonding play significant role in their volume change behaviour. In nonexpansive fine grained unsaturated undisturbed soils, the shearing resistance at particle level (including the matrix suction and bonding) and fabric play a significant role in influencing the volume change behaviour. While both the mechanism co-exist, one of them play a dominant role depending upon the primary clay mineral is swelling or non swelling.
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© 2005 Springer-Verlag Berlin Heidelberg
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Sridharan, A. (2005). Volume Change Behaviour of Fine Grained Soils. In: Schanz, T. (eds) Unsaturated Soils: Experimental Studies. Springer Proceedings in Physics, vol 93. Springer, Berlin, Heidelberg. https://doi.org/10.1007/3-540-26736-0_17
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DOI: https://doi.org/10.1007/3-540-26736-0_17
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