The air content of a partially saturated soil is defined as the ratio of the volume of air to the:
Correct answer: B. volume of voids
- A. total volume of soil
- B. volume of voids
- C. volume of soil solids
- D. volume of water
Explanation
Air content is the proportion of the void space occupied by air, so it is Va divided by Vv. It differs from porosity, which relates the total void volume to the total soil volume.
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About Soil Mechanics and Foundations
Soil mechanics examines index properties, phase relationships, classification, permeability, seepage, compaction, consolidation, shear strength and earth pressure. Foundations apply these principles to bearing capacity, settlement and shallow or deep foundation selection, with clear distinction between compaction, which expels air, and consolidation, which expels water over time.
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