A high aggregate water absorption value generally indicates that the aggregate is
Correct answer: C. More porous and likely to take up mix water
- A. More resistant to abrasion and impact
- B. More angular and likely to improve workability
- C. More porous and likely to take up mix water
- D. Less affected by changes in moisture condition
Explanation
High absorption usually indicates connected pores within the aggregate, allowing it to draw water from the concrete mixture. Such aggregate requires moisture correction to maintain the intended effective water-cement ratio.
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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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