Concrete curing — definition and purpose in construction In concrete technology, the process of maintaining adequate moisture (and favorable temperature) in freshly placed concrete for a specified period after finishing is known as what?

Introduction / Context:
Curing is one of the most critical post-placement operations in concrete construction. It directly influences hydration, strength gain, durability, abrasion resistance, and long-term performance. This question tests your understanding of basic terminology and the purpose behind keeping concrete moist after it is placed and finished.

Given Data / Assumptions:

• Fresh concrete has been placed, compacted, and surface-finished.
• The objective is to maintain moisture and suitable temperature for a defined period.
• No special admixtures or internal curing aggregates are assumed.

Concept / Approach:
Cement hydration requires water. If the concrete surface dries prematurely, hydration slows, microcracks can form due to plastic shrinkage, and surface durability suffers. Curing methods include water ponding, wet coverings, curing compounds (membrane-forming), and continuous spraying or fogging. Proper curing ensures that the designed properties are achieved within the intended time frame.

Step-by-Step Solution:

Verification / Alternative check:
Industry standards recommend a minimum curing period depending on cement type and environment; observing improved compressive strength and surface hardness with adequate curing validates the definition and importance.

Why Other Options Are Wrong:

• finishing of concrete: Surface treatment only; does not imply moisture maintenance.
• placing of concrete: Refers to depositing concrete into forms.
• compaction of concrete: Removal of entrapped air by vibration or rodding.
• none of these: Incorrect because the correct term is curing of concrete.

Common Pitfalls:
Confusing curing with drying; skipping curing in cool or humid weather; stopping curing too early leading to surface dusting and reduced durability.

Final Answer:
curing of concrete