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

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Before placing concrete against a previously constructed SCDOT pavement lane with mechanical equipment, the old concrete must be at least:

28 days old with no alternatives Opened to public traffic for one week 12 hours old, with no strength tests 10 days old, or 500 psi flexural, or 3,000 psi compressive on 6×12-inch cylinders (time below 40°F not counted); hand methods may start at 5 days

Correct Answer:

10 days old, or 500 psi flexural, or 3,000 psi compressive on 6×12-inch cylinders (time below 40°F not counted); hand methods may start at 5 days

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