When should concrete curing procedures start?

When should concrete curing procedures start?

• A. As soon as possible after finishing
• B. As soon as concrete surface is completely dry
• C. No sooner than 12 hours after finishing
• D. No sooner than 24 hours after finishing

Answer: (A)

Curing is about keeping the concrete moist and at the right temperature so the chemical hydration can continue and strength can develop properly. Because you want to trap surface moisture and minimize evaporation from the moment finishing is done, start curing as soon as finishing operations are complete and the surface can be protected without being damaged. Delaying curing—even by a few hours—lets moisture escape, slows strength gain, and increases the risk of plastic shrinkage cracking. That's why beginning curing as soon as possible after finishing is the best approach. Using methods like water curing, wet burlap, plastic sheets, or curing compounds helps maintain those moisture and temperature conditions right away.

Curing is about keeping the concrete moist and at the right temperature so the chemical hydration can continue and strength can develop properly. Because you want to trap surface moisture and minimize evaporation from the moment finishing is done, start curing as soon as finishing operations are complete and the surface can be protected without being damaged. Delaying curing—even by a few hours—lets moisture escape, slows strength gain, and increases the risk of plastic shrinkage cracking. That's why beginning curing as soon as possible after finishing is the best approach. Using methods like water curing, wet burlap, plastic sheets, or curing compounds helps maintain those moisture and temperature conditions right away.