For concrete with adequate compaction and curing, a lower water-cement ratio generally produces
Correct answer: D. Lower permeability and higher durability
- A. Higher permeability and lower durability
- B. Lower cement hydration and faster setting
- C. Higher bleeding and lower strength
- D. Lower permeability and higher durability
Explanation
A lower water-cement ratio usually leaves fewer connected capillary pores after hydration. This reduces permeability and improves durability, provided the concrete can still be properly placed and compacted.
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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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