Question

The following data were recorded during sand replacement test:

Mass of soil removed from hole = 1.914 kg
Mass of soil after oven-drying = 1.664 kg
Initial total mass of sand-pouring cylinder = 3.426 kg
Mass of sand-pouring cylinder after running sand into the hole = 1.594 kg
Density of pouring sand = 1.62 Mg/m³
Mass of sand in the cone in the sand-pouring cylinder = 0.248 kg

a) What is the bulk density of the soil in situ?
a) 1.62 Mg/m³
b) 1.75 Mg/m³
c) 1.85 Mg/m³
d) 2.10 Mg/m³

Answer 1

The bulk density of the soil can be calculated using the sand replacement test data. The formula Bulk Density = Mass of Soil / Volume of Soil can be used to calculate the bulk density of the soil.

Step-by-step explanation:

The bulk density of the soil can be calculated using the sand replacement test data. The initial mass of the sand-pouring cylinder is 3.426 kg, and after running the sand into the hole, the mass is 1.594 kg. The mass of the sand in the cone is 0.248 kg.

The mass of the soil removed from the hole is 1.914 kg, and the mass after oven-drying is 1.664 kg.

The bulk density of soil in situ can be calculated using the equation:

Bulk Density = Mass of Soil / Volume of Soil

The volume of soil can be calculated by subtracting the volume of the sand from the volume of the sand-pouring cylinder.

Plug in the values to calculate the bulk density of the soil.

Bulk Density = (1.914 kg - 1.664 kg) / ((3.426 kg - 1.594 kg) - 0.248 kg)