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

Why is a geotextile sometimes placed between a fine-grained subgrade and an open-graded aggregate subbase?

To increase the concrete slump To separate the soils so fines do not contaminate the aggregate and destroy drainage To replace compaction of the aggregate To serve as the contraction-joint filler

Correct Answer:

To separate the soils so fines do not contaminate the aggregate and destroy drainage

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