AL Tunnel Practice Questions - Alabama Tunnel Contractor Examination Exam

What is the purpose of curing newly placed tunnel or invert concrete?

To retain moisture so hydration can continue; premature drying reduces strength and increases cracking To remove all water from the mix immediately after finishing To raise the water-cement ratio after the concrete is in place To replace the specified compressive strength on the drawings

Correct Answer:

To retain moisture so hydration can continue; premature drying reduces strength and increases cracking

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