What is the purpose of soil compaction in construction?

Soil compaction is primarily aimed at enhancing soil stability, which is crucial in construction. When soil is compacted, the particles are pressed closer together, reducing the space between them. This increases the overall density and strength of the soil, making it better able to support structures such as roads, buildings, and other infrastructure. A well-compacted soil minimizes settlement and reduces the risk of future instability, which is vital for ensuring the safety and longevity of construction projects.

While increased plant growth, improved drainage, and decreased volume are related to soil characteristics, they are not the primary purposes of soil compaction in construction contexts. Soil compaction itself does not directly stimulate plant growth or necessarily improve drainage, as compacted soil can often inhibit root development and water infiltration in some cases. Additionally, while compaction can decrease the volume of soil, this is a byproduct of the primary goal of enhancing stability, rather than a standalone purpose. Thus, enhancing soil stability is the crucial reason for applying compaction techniques in construction.