Which test is commonly used to analyze soil compaction characteristics?

The Standard Proctor Test is widely recognized as the standard method for determining the compaction characteristics of soil. This test establishes both the maximum dry density and optimum moisture content of the soil, essential parameters necessary for effectively managing soil compaction in construction and engineering projects. By compacting the soil at different moisture contents and measuring its density, engineers can identify the ideal conditions under which the soil achieves maximum stability and strength.

In contrast, the California Bearing Ratio Test evaluates the strength of subgrade soils and base materials in road construction, rather than directly assessing compaction. The Atterberg Limits Test primarily determines the plasticity characteristics of fine-grained soils and helps classify them based on their moisture content, but it does not measure compaction. The Permeability Test assesses the rate at which water flows through soil, indicating drainage properties rather than compaction. Thus, the Standard Proctor Test is the most appropriate method for analyzing soil compaction characteristics, aligning with the specific needs of construction and soil engineering.