Q156. As the cement sets and hardens, it generates heat. This is called:
  • Heat of hydration
  • Latent heat
  • Heat of vaporisation
  • Sensible heat

Correct Answer: A. Heat of hydration

Solution:

The chemical reaction between cement and water is an exothermic process, meaning it releases heat. This liberated heat, which causes the concrete to warm up as it sets and hardens, is known as the heat of hydration. The amount of heat generated depends on the chemical composition of the cement.