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Changing grading of soil: effect on critical states |
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| Authors: | David Muir Wood Kenichi Maeda |
| Affiliation: | (1) Department of Civil Engineering, University of Bristol, Queen’s Building, University Walk, Bristol, BS8 1TR, UK;(2) Department of Civil Engineering and Management, Nagoya Institute of Technology, 16th Building, Room 232, Gokiso-cho Showa-ku, Nagoya City 466-8555, Japan |
| Abstract: | Examples of situations are presented where the grading of a soil changes during its lifetime either by crushing of particles leading to an increase of fine material or by slow transport of fine particles with seepage leading to a decrease of fine material. Such grading changes influence the basic constitutive properties of the soil, in particular properties such as critical states which are dependent on the available range of densities of packing. Discrete element modelling is used to show the dependence of critical state conditions on grading and the way in which the particle assembly seeks out new critical state conditions as the grading changes. |
| Keywords: | Discrete element modelling Critical states Non-plastic soil Particle size distribution Fractals State parameter |
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