In the modified Proctor test, what is the volume capacity of the mold typically used?

In the modified Proctor test, the volume capacity of the mold is typically 0.5 liters. This specific mold size is crucial for achieving the intended compaction effort, which helps determine the optimum moisture content and maximum dry density of a soil sample. The use of the 0.5-liter mold allows for consistent results when testing various soil types, as it provides a necessary balance between handling manageable quantities of soil while still offering sufficient surface area for testing.

The compacting effort in the modified Proctor test is greater than that in the standard Proctor test; therefore, using a mold of this size ensures that the soil sample is compacted to the desired density level, which is an essential aspect of evaluating soil suitability for construction and engineering purposes.