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Q: Low Heat Cement is used for
  • A. thick structure
  • B. thin structure
  • C. reinforcement free structure
  • D. underground structure
Correct Answer: Option A - Low heat cement– • It is portland cement with relatively lower contents of the more hydrability compounds C3S and C3A and higher content of C2S. • This is desirable in mass concreting of gravity dam (thick structure) the excessive heat of hydration can result in serious cracking. Low heat evolved, helpful in preventing shrinkage of high temperature. • Rate of development of strength is low but ultimate strength is same.
A. Low heat cement– • It is portland cement with relatively lower contents of the more hydrability compounds C3S and C3A and higher content of C2S. • This is desirable in mass concreting of gravity dam (thick structure) the excessive heat of hydration can result in serious cracking. Low heat evolved, helpful in preventing shrinkage of high temperature. • Rate of development of strength is low but ultimate strength is same.

Explanations:

Low heat cement– • It is portland cement with relatively lower contents of the more hydrability compounds C3S and C3A and higher content of C2S. • This is desirable in mass concreting of gravity dam (thick structure) the excessive heat of hydration can result in serious cracking. Low heat evolved, helpful in preventing shrinkage of high temperature. • Rate of development of strength is low but ultimate strength is same.