What is the impact of compaction on void spaces between soil grains?

Compaction significantly reduces void spaces between soil grains. When soil is compacted, the particles are forced closer together, which minimizes the air pockets or voids that exist between them. This process increases the density of the soil, enhancing its load-bearing abilities and stability. A well-compacted soil structure is critical for construction purposes, as it improves the overall strength and reduces the risk of settlement or shifting.

The other choices do not accurately describe the effects of compaction. Increasing void spaces would lead to a less stable structure, creating a higher potential for settlement. Creating new void spaces contradicts the very principle of compaction, which is to bring particles closer together rather than apart. Lastly, stating that compaction has no effect on void spaces neglects the fundamental definition of compaction itself; it is specifically aimed at reducing those voids to increase soil stability.