If dry, porous aggregate is used without adjustment of batch water, it will generally
Correct answer: B. Absorb water and reduce workability
- A. Release water and increase workability
- B. Absorb water and reduce workability
- C. Prevent cement hydration completely
- D. Increase the cement content automatically
Explanation
Dry porous aggregate absorbs part of the mixing water during mixing. The remaining free water decreases, so the concrete may become less workable unless moisture corrections are made.
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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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