Question

The in situ unit weight of a medium to coarse sand used as subgrade for a highway was 16 kn/m3. It was decided to improve that soil by mechanical stabilization. When 5.5 kn of a mixture of dry sand and silt was added to 1m3 of this subgrade, the volume was increased by 20%. How much reduction in porosity of the soil was achieved

Answer 1

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