A dry sand is placed in a container having a volume of 0.0092 cubic centimeter. The dry unit weight of the sample is 0.015 gram. Water is carefully added to the container so as not to disturbed the condition of the sand. When the container is filled, the combined weight of soil plus water is 0.0182 gram. a. Determine the specific gravity of soil particle. b. Determine the dry unit weight of soil. 2. If the soil sample has a water content of 11% and a unit weight of 19.67 kN/m3 , determine the percentage of air in voids and the degree of saturation if the specific gravity of soil solid is 2.75.
1. A dry sand is placed in a container having a volume of 0.0092 cubic centimeter. The dry unit weight
of the sample is 0.015 gram. Water is carefully added to the container so as not to disturbed the
condition of the sand. When the container is filled, the combined weight of soil plus water is 0.0182
gram.
a. Determine the specific gravity of soil particle.
b. Determine the dry unit weight of soil.
2. If the soil sample has a water content of 11% and a unit weight of 19.67 kN/m3
, determine the
percentage of air in voids and the degree of saturation if the specific gravity of soil solid is 2.75.
3. If the soil sample has a specific gravity of 2.71 and a porosity of 0.345, determine the saturated unit
weight and the bouyant unit weight.
4. A soil sample having a liquidity index of 0.85, a plasticity index of 16.50 and a plastic limit of 11.45.
The soil sample has a specicfic gravity of 2.68 and a void ratio of 0.77.
a. Compute the degree of saturation.
b. Compute the air void ratio.
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