Mechanics clayey rocks

Properties of clays and clayey rocks, and also the processes in them depend on a number of factors. Then the mathematical simulation of the properties and processes, as one of the methods of their examination, is a rather difficult problem. Physically it is clear that the speciflc properties of clay rocks (low permeability, plasticity in moist condition) are caused by the existence of clay minerals in their composition, and these properties are a manifestation of surface capacities, which exist between particles of the clay minerals, which are included in the composition of clays. The most useful conception of the activity of surface capacities is the conception of disjoining pressure between colloid particles, Mitchell (1976). In this work we provide a description of the physical and mechanical clay properties and transport processes in them. The description is based on methods of theory of filtration consolidation. Nikolaevskiy (1996), and also on the theory of stability of lyophobic colloids (theory of Deijaguin-Landau-Verwey-Overbeeck, or DLVO theory), which uses the conception of disjoining pressure. 

Bornert, M, Vales, F, Gharbi, H., Minh, D.N. 2010. Multiscale full-field strain measurements for micro-mechanical investigations of the hydromechanical behaviour of clayey rocks. Strain 46(1) 33-46. 

Shi, B. Jiang, H.T. 2001. Research on the analysis techniques for clayey soil microstructure. Chinese Journal of Rock Mechanics and Engineering 20(6) 864-870. 

He, Sh.X. Long, L.H. etal.2008. Experimental study of yield property of clayey soil under unloading. Rock and Soil Mechanics 29 449-452. 

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