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Q: Tricalcium aluminate (C3A)
  • A. reacts fast with water
  • B. generates less heat of hydration
  • C. causes initial setting and early strength of cement
  • D. does not contribute to develop ultimate strength
Correct Answer: Option A - Tricalcium Aluminate (C3A) is a Bogue's compound in cement which is responsible for the flash setting of cement. This reacts with water very quickly. Since it reacts very fast so it generates very large amount of heat. It also doesn't contribute to develop the ultimate strength.
A. Tricalcium Aluminate (C3A) is a Bogue's compound in cement which is responsible for the flash setting of cement. This reacts with water very quickly. Since it reacts very fast so it generates very large amount of heat. It also doesn't contribute to develop the ultimate strength.

Explanations:

Tricalcium Aluminate (C3A) is a Bogue's compound in cement which is responsible for the flash setting of cement. This reacts with water very quickly. Since it reacts very fast so it generates very large amount of heat. It also doesn't contribute to develop the ultimate strength.