Which of the following correctly describes what curing does?
Correct Answer: D. All options are correct
📚 Detailed Explanation: What Curing Achieves — All Three Statements Are Correct
Why D (All options) is correct: The three statements describe different facets of the same process. Preventing evaporation is the mechanism; preserving properties and reducing shrinkage are the outcomes. All three are true.
Verification of Each Statement
| Statement | Verdict | Detail |
|---|---|---|
| A. Reduces shrinkage | Correct | Drying shrinkage occurs when concrete loses moisture rapidly. Curing slows moisture loss, allowing hydration products to fill pores gradually → less net shrinkage and fewer cracks |
| B. Preserves properties | Correct | Properties like strength, durability, and impermeability are achieved through full hydration; curing preserves the moisture needed for this to happen |
| C. Prevents evaporation | Correct | Whether by adding water (wet curing) or sealing the surface (membrane curing), the net effect is preventing or compensating for evaporation of mix water |
The Chain of Benefits
Prevents evaporation → maintains water for hydration → hydration products fill pores → higher density, strength, impermeability → reduced shrinkage and preserved design properties.
- All three are correct descriptions of what curing does: reduces shrinkage, preserves properties, prevents evaporation.