What is the degree of saturation when the void space in a soil sample consists of 0% air and 100% water?

• A. 0%
• B. 50%
• C. 100%
• D. None of the above

Answer: (C)

When considering the degree of saturation in a soil sample, it is defined as the ratio of the volume of water present in the voids of the soil to the total volume of voids, expressed as a percentage. This situation describes a scenario where the void space contains no air and is completely filled with water.

In this case, since the void space is filled entirely with water and contains no air, the degree of saturation is at its maximum level. Thus, it is 100% saturated. This indicates that all the voids are occupied by water, reflecting that the soil is fully saturated with respect to water content.

Denoting 0% air content implies that there is no space left for air within the voids, allowing for the complete presence of water. In soil mechanics and geotechnical engineering, a degree of saturation of 100% serves as a critical point in understanding soil behavior, particularly under saturated conditions. Overall, the concept reinforces the understanding of soil moisture conditions in various engineering applications.