Which characteristic is associated with sulphate-resisting Portland cement?
Correct answer: D. Low content of tricalcium aluminate
- A. High content of tricalcium aluminate
- B. Low content of dicalcium silicate
- C. High content of free lime
- D. Low content of tricalcium aluminate
Explanation
Sulphate-resisting cement contains a low proportion of tricalcium aluminate, or C3A. This reduces the formation of expansive products when the hardened concrete is exposed to sulphate solutions.
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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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