Which statement best distinguishes hardening from setting in cement paste?
Correct answer: A. Hardening involves strength gain after setting
- A. Hardening involves strength gain after setting
- B. Hardening occurs before water is added
- C. Hardening refers only to loss of workability
- D. Hardening is caused only by evaporation
Explanation
Setting marks the transition from a fluid or plastic state to a rigid state, while hardening is the continuing development of strength after setting. Hardening is mainly due to ongoing hydration, not simply water loss.
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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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