The sand-cone method is used to determine in the field the density of compacted soils in earth embankments, road fill, and structure backfill, as well as the density of natural soil deposits, aggregates, soil mixtures, or other similar materials. It is not suitable, however, for soils that are saturated, soft, or friable (crumble easily).
Characteristics of the soil are computed from:
Maximum density is found by plotting a density–moisture curve.
Contributed by: Prashant Kien University of Montreal Pune, India