Practice question

A laboratory Proctor compaction test is used primarily to determine:

  1. The California Bearing Ratio of an existing pavement
  2. Maximum dry density and optimum moisture content of a soil
  3. The unconfined compressive strength used to name OSHA soil type only
  4. The theoretical maximum specific gravity of an asphalt mix

Answer: B — Maximum dry density and optimum moisture content of a soil

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