Determination of adequate compaction is done by determining the in-situ density of the soil and comparing it to the maximum density determined by a laboratory test. The most commonly used laboratory test is called the Proctor compaction test and there are two different methods in obtaining the maximum density.
The process of achieving adequate compaction relies on measuring the density of the soil at its location and comparing it to the maximum density obtained from a lab test. The Proctor compaction test is the most common method used in this process, with two different approaches for determining the maximum density.