Bulk Density and Soil Properties

The video tutorial explains the concepts of bulk density and particle density in soil. It covers definitions, formulas, and measurement techniques for both types of density. The tutorial also discusses different categories of bulk density, such as dry and saturated density, and provides examples of density calculations. Additionally, it introduces the concept of specific gravity and its relation to density.

What are the components of soil as described in the introduction?

• Only solid particles and water

• Solid particles, voids, air, and water

• Solid particles and air

• Only air and water

How is bulk density defined?

• Volume of air over volume of water

• Mass of water over mass of air

• Mass of solid over volume of solid

• Total mass over total volume

What is another name for particle density?

• Saturated density

• Apparent density

• Natural density

• True density

Which method is used to measure particle density?

• Sand test

• Water displacement test

• Core cutter test

• Pycnometer test

What does the bulk density of sand approximately equal?

• 1.0 G per CM CU

• 2.7 G per CM CU

• 2.55 G per CM CU

• 1.6 G per CM CU

What is dry density?

• Mass of water over volume of water

• Mass of solid over volume of solid

• Total mass over total volume

• Oven dry mass over volume

Under what condition is saturated density measured?

• When soil is below the water table

• When soil is oven dry

• When soil is compacted

• When soil is mixed with air

What is specific gravity in relation to particle density?

• Bulk density over particle density

• Particle density over water density

• Water density over particle density

• Bulk density over water density

What is the specific gravity of a substance with a particle density of 2.7 G per CM CU?

• 1.5

• 3.0

• 2.7

• 1.0

Which density is not used in the calculation of specific gravity?

• True density

• Water density

• Bulk density

• Particle density