What best describes false set in cement?
Correct answer: A. Temporary stiffening that disappears after remixing
- A. Temporary stiffening that disappears after remixing
- B. Rapid stiffening followed by strong heat evolution
- C. Permanent stiffening caused by cement hydration
- D. Delayed setting caused by excessive aggregate moisture
Explanation
False set is temporary stiffening, usually caused by the reformation of gypsum during grinding or storage. Proper remixing normally restores plasticity without adding extra water, unlike true rapid setting.
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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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