Crack tortuosity in swelling clay soils
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| Authors: | V. Chertkov1, I. Ravina2 1Faculty of Agricultural Engineering, Technion, 32000 Haifa, Israel 2Faculty of Agricultural Engineering, Technion, Haifa 32000, Israel |
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| Abstract : | Abstract. A relationship between the planar and spatial tortuosities of a statistically isotropic crack network in a clay soil is derived from the fact that connected cracks outline peds and are their boundaries. Connectedness, a parameter characterizing the crack network, determines this relationship. The two- and three-dimensional tortuosities vary from 1.5 to 2.2 and from 1.4to3.25,respectively,when connectedness decreases from unity to zero. A method proposed for processing two-dimensional images of crack networks enabled the estimation of two- and three-dimensional tortuosities of an assumed isotropic crack network. Two-dimensional images of seventeen different crack networks, available in the literature, were used to show the application of the proposed dependency between planar and spatial tortuosities. |
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| Keywords : | swelling soil, crack network, crack connectedness, planar tortuosity, spatial tortuosity | ||||||||
| Language : | English | ||||||||