Which change generally increases the early strength of cement paste, provided the water-cement ratio remains suitable?
Correct answer: C. Increasing cement fineness
- A. Reducing cement hydration
- B. Increasing aggregate size
- C. Increasing cement fineness
- D. Increasing the volume of entrapped air
Explanation
Finer cement particles provide greater surface area for hydration, so strength develops more rapidly at early ages. Excessive fineness can increase water demand and heat generation, so the mix must still be properly proportioned.
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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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