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Q: To produce low heat cement-
  • A. Gypsum content is increased
  • B. C₃S content is increased
  • C. C₃A content is reduced
  • D. C3A content is increased
Correct Answer: Option C - Low heat portland cement– Low C₃S, C₃A content and more contents of C₂S. • It is use in mass concrete work. • Rate of development of strength is low but ultimate strength is same. • Heat of hydration of C₃A is 865 J/gm.
C. Low heat portland cement– Low C₃S, C₃A content and more contents of C₂S. • It is use in mass concrete work. • Rate of development of strength is low but ultimate strength is same. • Heat of hydration of C₃A is 865 J/gm.

Explanations:

Low heat portland cement– Low C₃S, C₃A content and more contents of C₂S. • It is use in mass concrete work. • Rate of development of strength is low but ultimate strength is same. • Heat of hydration of C₃A is 865 J/gm.