Question

The amount of tetracalcium aluminoferrite that is responsible for flash set but generates less heat is required approximately ______ of cement.

• A. 16 - 20 %
• B. 8 - 14 %
• C. 25 - 40 %
• D. 5 - 7 %

Answer 1

The correct option is B 8 - 14 %

The amount of tetracalcium aluminoferrite that is responsible for flash set but generates less heat required is approximately 8 - 14% of cement. It has the poorest cementing value, raising the $C_{4}AF$ content reduces the strength slightly.