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Q: Which is by far the most common cement in use that has medium rate if strength development and heat generation?
  • A. Extra rapid hardening cement
  • B. Rapid hardening cement
  • C. Ordinary Portland cement
  • D. Low heat Portland cement
Correct Answer: Option C - Ordinary Portland cement– • This is by far the most common cement in use. • It has medium rate of strength development and heat generation. • It has adequate resistance to dry shrinkage and cracking but has less resistance to chemical attack. Uses– 1. It is admirably suitable for use in general concrete construction when there is no exposure to sulphates in the soil or in ground water. 2. It is used in small structure where heat of hydration will not cause any defect.
C. Ordinary Portland cement– • This is by far the most common cement in use. • It has medium rate of strength development and heat generation. • It has adequate resistance to dry shrinkage and cracking but has less resistance to chemical attack. Uses– 1. It is admirably suitable for use in general concrete construction when there is no exposure to sulphates in the soil or in ground water. 2. It is used in small structure where heat of hydration will not cause any defect.

Explanations:

Ordinary Portland cement– • This is by far the most common cement in use. • It has medium rate of strength development and heat generation. • It has adequate resistance to dry shrinkage and cracking but has less resistance to chemical attack. Uses– 1. It is admirably suitable for use in general concrete construction when there is no exposure to sulphates in the soil or in ground water. 2. It is used in small structure where heat of hydration will not cause any defect.