What is the main effect of well-graded aggregate on a concrete mix?
Correct answer: A. It reduces paste demand by improving particle packing
- A. It reduces paste demand by improving particle packing
- B. It increases the volume of voids between particles
- C. It eliminates the need for cement hydration
- D. It prevents all forms of concrete shrinkage
Explanation
Well-graded aggregate contains particles of different sizes that pack more efficiently. This reduces interparticle voids and can lower the amount of cement paste needed for a given volume of concrete.
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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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