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Q: Which of the following is NOT a field of application of rapid-hardening cement?
  • A. Road repair works
  • B. Cold weather concreting
  • C. Massive dams
  • D. Pre-fabricated concrete production
Correct Answer: Option C - Rapid-hardening cement–It has high lime content and can be obtained by increasing the C3S content but is normally obtained from OPC clinker by finer grinding (450 m²/kg). • The basis of application of rapid hardening cement is hardening properties and heat emission rather than setting rate. Use–Road repair work, cold weather concreting, pre-fabricated concrete production, repair of bridge.
C. Rapid-hardening cement–It has high lime content and can be obtained by increasing the C3S content but is normally obtained from OPC clinker by finer grinding (450 m²/kg). • The basis of application of rapid hardening cement is hardening properties and heat emission rather than setting rate. Use–Road repair work, cold weather concreting, pre-fabricated concrete production, repair of bridge.

Explanations:

Rapid-hardening cement–It has high lime content and can be obtained by increasing the C3S content but is normally obtained from OPC clinker by finer grinding (450 m²/kg). • The basis of application of rapid hardening cement is hardening properties and heat emission rather than setting rate. Use–Road repair work, cold weather concreting, pre-fabricated concrete production, repair of bridge.