What does compressive strength refer to in soil?

Compressive strength in soil specifically refers to the soil's ability to withstand compressive forces. This property measures how much load or pressure the soil can endure before failing or deforming. It is a critical parameter in geotechnical engineering, as it helps in assessing the stability and load-bearing capacity of soil when subjected to structural elements, such as foundations, retaining walls, and other constructions.

Understanding compressive strength is vital for ensuring that buildings and infrastructure are constructed safely and effectively on various soil types. Higher compressive strength indicates that the soil can support greater loads, making it suitable for construction purposes. This property is assessed through various tests, such as unconfined compressive strength tests, and plays a crucial role in engineering and design decisions.