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| International Agrophysics |
| publisher: | Institute of Agrophysics
Polish Academy of Sciences
Lublin, Poland |
| ISSN: |
0236-8722 |
vol. 13, nr. 1 (1999)
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Crack tortuosity in swelling clay soils
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| (get PDF )
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Chertkov V.Y., Ravina I.
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Faculty of Agricultural Engineering, Technion, Haifa 32000, Israel |
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vol. 13 (1999), nr. 1,
pp. 7-13
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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 1.4 to 3.25, 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
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