Engineering
How Concrete Cures and Gains Strength Over Time
Quick fact
Concrete's strength gain isn't from drying; it's from a chemical reaction with water. In fact, concrete that is kept moist for 28 days can achieve about 50% more strength than concrete left to dry in the same period.
Why this is interesting
Have you ever wondered why freshly poured concrete is kept wet and covered? Most people assume it's drying out—but the opposite is true.