Methodology for Proctor Compaction Test (PCT)

The Proctor Compaction Test, as per Indian Standard IS: 2720 (Part 8), is conducted to determine a soil sample’s maximum dry density and optimum moisture content. The process involves obtaining a clean soil sample, setting up the equipment, compacting the soil in the mold at varying moisture contents, determining the moisture content of each sample, and calculating the dry density for each. A graph of dry density versus moisture content is plotted to determine the optimum moisture content and maximum dry density. Test results are reported accordingly.