What does a dry density of 0% indicate?

• A. No voids present in the soil
• B. Total mass of water in the soil
• C. Complete saturation of soil
• D. No moisture content in the soil

Answer: (D)

A dry density of 0% signifies that there is no moisture content in the soil. In soil mechanics, dry density is defined as the mass of solids in a unit volume of soil when the soil is completely dried. Therefore, when the dry density is at 0%, it indicates that there are no water molecules present to contribute to the density, meaning the soil is devoid of moisture.

This understanding is crucial for various applications in geotechnical engineering and soil testing, as knowing the moisture content of soil can affect its compaction, stability, and overall behavior under load. In contrast, a dry density that is not zero would indicate either some moisture content or the presence of voids, which can influence other properties of the soil.