What is the purpose of a proctor test in soil testing?

The purpose of a proctor test in soil testing is to determine the maximum density of soil. This test, typically referred to as the Proctor compaction test, is essential in civil engineering and construction for assessing how well soil can be compacted. It involves measuring the relationship between the moisture content and the dry density of soil when it is compacted under controlled conditions.

By establishing the maximum density, engineers can identify the optimal moisture content for achieving the best compaction during construction projects. This knowledge is crucial for ensuring the stability and strength of soil in various applications, including foundations, roadbeds, and earthworks. The Proctor test helps to ensure that the soil meets necessary specifications for load-bearing capacity and overall performance.