What is the principal purpose of curing concrete after placing?
Correct answer: C. To maintain moisture for cement hydration
- A. To increase the rate of surface drying
- B. To remove entrapped air from the mixture
- C. To maintain moisture for cement hydration
- D. To reduce the cement content near the surface
Explanation
Curing maintains suitable moisture and temperature so cement hydration can continue. Poor curing can reduce strength and increase surface cracking, even when the original mix proportions are suitable.
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About Concrete Technology
Concrete technology covers cement, aggregates, water and admixtures, including their properties, proportioning and effect on fresh and hardened concrete. It explains workability, water-cement ratio, setting, hydration, strength, durability, curing, mix design and common defects, while distinguishing segregation and bleeding from general loss of workability.
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