AZ ROC R-13 Asphalt Paving Practice Questions - Arizona ROC R-13 Asphalt Paving Examination Exam

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What is the primary purpose of proof rolling a completed subgrade with a heavy pneumatic-tired roller or loaded tandem truck?

To locate soft, yielding, or pumping areas in the subgrade prior to base placement To seal the surface layer against rain penetration for long-term storage To crush oversized aggregate particles on the subgrade surface To measure the exact moisture content of the subgrade in real time

Correct Answer:

To locate soft, yielding, or pumping areas in the subgrade prior to base placement

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