Question

In cements, generally the increase in strength during a period of 14 days to 28 days is primarily due to

• A. $C_{3}A$
• B. $C_{2}S$
• C. $C_{3}S$
• D. $C_{4}AF$

Answer 1

The correct option is C $C_{3}S$

14-28 day strength is mainly contributed by $C_{3}S$. Ultimately both $C_{3}S$ and $C_{2}S$ contribute to the strength.