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

Lime is added to a fat clay subgrade under a future concrete pavement primarily to:

Increase the clay's plasticity and make it stickier Reduce plasticity, improve workability, and stabilize the soil so it can be compacted into a firmer working platform Replace the concrete slab Color the subgrade so grade stakes are easier to see

Correct Answer:

Reduce plasticity, improve workability, and stabilize the soil so it can be compacted into a firmer working platform

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