What is considered the main purpose of the sand cone test?

The main purpose of the sand cone test is to estimate in situ soil density. This test is commonly utilized in civil engineering and construction to assess the compaction of soils on-site. By measuring the volume of sand required to fill a hole excavated in the soil, the test allows engineers to calculate the density of the soil in its natural state, providing vital information about its stability and suitability for construction purposes.

Knowing the in situ soil density helps determine whether the soil meets the necessary criteria for supporting structures and ensures the overall integrity of engineering projects. The sand cone test is particularly valuable because it provides direct measurements from the site, unlike laboratory methods that may not fully replicate field conditions. This accuracy contributes significantly to the safety and effectiveness of construction methodologies.