Experimental mechanics of sand stratification

The specific objectives of this study of heterogeneous sand mixtures are to: 1) define particle segregation mechanics in terms of the mechanical interaction between moving particles in the bed layer at the interface with the stationary particles on the bed; 2) report on several laboratory experiments where lamination and stratification of sand deposits were obtained in a large laboratory flume under steady flow and a continuous sediment supply. The interaction of moving sand particles at the interface with stationary bed material is paramount to the understanding of sand stratification. The shearing motion of a mixture of coarse and fines and particles of identical mass density is considered. The percentage of…