AZ ROC CR-66 Seal Coating Practice Questions - Arizona ROC CR-66 Seal Coating Examination Exam

What is the primary purpose of proof rolling a completed soil subgrade before placing aggregate base?

To identify soft spots, pumping, or yielding areas under heavy wheel loads To seal the subgrade surface against rainfall penetration To measure the moisture content of the subgrade soil To apply a liquid asphalt prime coat evenly across the soil

Correct Answer:

To identify soft spots, pumping, or yielding areas under heavy wheel loads

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