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

What is the main reason an open-graded drainage layer under concrete pavement must daylight to a drain or ditch?

To provide a path for mix water to leave the fresh concrete To keep water from being trapped under the slab, where it would saturate the subgrade and promote pumping To increase the measured slump at the paver To replace edge drains on every project automatically

Correct Answer:

To keep water from being trapped under the slab, where it would saturate the subgrade and promote pumping

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