SC Asphalt Paving Practice Questions - South Carolina Asphalt Paving Contractor Examination Exam

Why is soil compacted near its optimum moisture content rather than bone-dry or saturated?

Optimum moisture lets particles rearrange under the roller so the highest dry density can be reached Saturated soil always produces the highest dry density Bone-dry soil has the lowest air voids and therefore the highest strength Moisture content does not affect dry density if the roller is heavy enough

Correct Answer:

Optimum moisture lets particles rearrange under the roller so the highest dry density can be reached

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