For the Standard Proctor, what is the required Maximum Density?

For the Standard Proctor, what is the required Maximum Density?

• A. 98%
• B. 95%
• C. 102%
• D. 100%

Answer: (D)

In the Standard Proctor, the numbers you get for density are used as a reference point: the maximum dry density found at the optimum moisture content. All field compaction is then expressed as a percent of that maximum value, i.e., as relative compaction. By definition, that maximum density is 100%. So the required Maximum Density is 100%, because it serves as the normalization baseline for relative compaction. The other percentages (95%, 98%, or 102%) would represent percent of the maximum density (field targets or over-densification), not the defined maximum itself.

In the Standard Proctor, the numbers you get for density are used as a reference point: the maximum dry density found at the optimum moisture content. All field compaction is then expressed as a percent of that maximum value, i.e., as relative compaction. By definition, that maximum density is 100%. So the required Maximum Density is 100%, because it serves as the normalization baseline for relative compaction. The other percentages (95%, 98%, or 102%) would represent percent of the maximum density (field targets or over-densification), not the defined maximum itself.