What is the best way to achieve proper compaction of soil?

Achieving proper compaction of soil is primarily influenced by the moisture content within the soil. Controlling the amount of water in the soil is crucial because water has a significant role in the compaction process. When the soil moisture is optimal, soil particles can slide closer together, allowing them to align more efficiently during compaction. This optimal moisture level often enhances the weight-bearing capacity of the soil, reduces air voids, and improves overall stability.

Furthermore, when soil is overly dry, particles do not bond as effectively, and when soil is too wet, it can become overly saturated and muddy, preventing proper compaction. Therefore, maintaining the right level of water is key to achieving the desired density and strength of the soil, making this approach the most effective method for proper soil compaction.

The other methods, while they may influence compaction to some degree, do not address the same fundamental aspect of soil structure that moisture does.