What property do modified and standard Proctor tests aim to achieve?

The modified and standard Proctor tests are essential in the field of soil mechanics, particularly for determining the compaction characteristics of soils. Both tests focus on establishing two critical parameters: maximum dry density and optimum moisture content.

The maximum dry density signifies the densest configuration of soil particles achievable through compaction, while the optimum moisture content is the water content at which the soil can attain this maximum density. These values are crucial for ensuring proper compaction in construction projects, influencing foundation stability and performance.

In contrast, the other options do not align with the primary objectives of the Proctor tests. For instance, while particle size consistency, soil color uniformity, and high shear strength can be relevant to certain soil qualities, they are not direct targets of the Proctor testing methodologies. Instead, the focus remains on maximizing density and determining the ideal moisture for optimal compaction, making the understanding of these parameters vital for effective soil testing and preparation in construction.