Relationship of tire sinkage depth to depth of soil compaction
1995
Adam, K.M. | Erbach, D.C.
A relationship between tire sinkage depth and depth at which trafffic increased bulk density by 0.05 Mg/m3 was developed from data in published literature. Laboratory and field experiments were also conducted to verify the relationship. In the laboratory, a universal testing machine was used with the aid of dimensional analysis and modeling theory to physically simulate compaction by a tractor tire. An oval metal plate 100 mm wide and 122 mm long was used to apply stresses of 25, 50, 100, and 150 kPa to soil in containers. Three soil water contents were used. For field verification, a tractor was used to traffic soil. Different tire inflation pressures and loads were used to create different tire sinkage depths. Differences in bulk density were used to determine depth at which applied stress caused significant soil compaction. Based on previous research and on laboratory and field experiments, compaction depth, Y, was found to be related to sinkage depth, X, by the empirical equation, Y = bXm where b and m are regression constants.
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