What is the purpose of a proctor compaction test?

The proctor compaction test is specifically designed to determine the optimal moisture content of soil or aggregate material needed to achieve maximum density through compaction. By performing this test, technicians can find the moisture level that allows the aggregate to bind together most effectively when compacted, which is crucial for ensuring the stability and durability of the material in construction applications.

The optimal moisture content is a critical factor in achieving the desired density, as too much or too little moisture can lead to inadequate compaction, which can compromise the integrity of the pavement structure or base layer. This testing helps inform construction practices and provides guidelines for materials handling to ensure strong, lasting performance under loads.

Thus, the purpose of the proctor compaction test centers around optimizing moisture content, making it essential for quality control in construction projects that utilize aggregate materials.