Which type of water is generally considered suitable for mixing and curing concrete?
Correct answer: D. Potable drinking water
- A. Untreated sewage water
- B. Highly saline seawater
- C. Acidic industrial water
- D. Potable drinking water
Explanation
Potable water is generally suitable because it normally contains no harmful concentrations of substances that interfere with cement hydration. Seawater, acidic water and sewage may damage concrete or reinforcement.
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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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