Question

The compound which is largely responsible for initial setting and early strength gain of Ordinary Portland Cement is

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

Answer 1

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

$C_{3}S$ readily reacts with water, producing more heat of hydration and is responsible for early strength of concrete.