Estimation of density—Moisture—Stress functions from uniaxial compression of unsaturated, structured soils |
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Authors: | R. A. McBride |
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Affiliation: | Department of Land Resource Science, University of Guelph, Guelph, Ontario N1G 2W1, Canada |
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Abstract: | A quasi-theoretical soil compaction model is presented which gives good estimates (r2=0.980−0.995, P<0.001) of the complete density-stress compression line for soils of variable initial moisture content under static loads from 0 to 1.0 MPa. The 3 unknown parameter coefficients of the generalized model equation are shown to be highly correlated to several soil properties such as moisture content, pre-compression (initial) void ratio, texture, organic matter content ans the Atterberg consistenct limits. A 3-tier classification for partition consisteny limits. A-tier claasificaton for pationing soils into groupings of response to compressive stress is proposed for soil compaction modeling. This categorization is based on soil plasticity and the existence of a “compaction threshold“ sensitivity threshold” in most soils. |
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