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Q: Which of the following Bogue compounds in OPC responsible for progressive strength by slow hardening and releasing less heat of hydration?
  • A. Dicalcium silicate
  • B. tetracalcium alumino ferrite
  • C. Tricalcium silicate
  • D. Tricalcium aluminate
Correct Answer: Option A - Bogues compounds– C₃S (Tricalcium Silicate) – Alite C₂S (Dicalcium Silicate)– Belite C₃ A (Tricalcium aluminate)– Celite C₄ AF (Tetra calcium Alumino ferrite)– Felite Dicalcium silicate (C₂S)– This compound will undergo reaction slowly. It is responsible for the progressive strength of concrete. The heat of hydration is 260 J/cal.
A. Bogues compounds– C₃S (Tricalcium Silicate) – Alite C₂S (Dicalcium Silicate)– Belite C₃ A (Tricalcium aluminate)– Celite C₄ AF (Tetra calcium Alumino ferrite)– Felite Dicalcium silicate (C₂S)– This compound will undergo reaction slowly. It is responsible for the progressive strength of concrete. The heat of hydration is 260 J/cal.

Explanations:

Bogues compounds– C₃S (Tricalcium Silicate) – Alite C₂S (Dicalcium Silicate)– Belite C₃ A (Tricalcium aluminate)– Celite C₄ AF (Tetra calcium Alumino ferrite)– Felite Dicalcium silicate (C₂S)– This compound will undergo reaction slowly. It is responsible for the progressive strength of concrete. The heat of hydration is 260 J/cal.