Cement is made hard with

Q. Cement is made hard with

1. dehydration
2. polymerization
3. dissociation of water
4. hydration and dissociation of water

Answer: hydration and dissociation of water

Cement is made hard with hydration and dissociation of water.

Cement starts to set when mixed with water, which causes a series of hydration chemical reactions. The constituents slowly hydrate and the mineral hydrates solidify. The interlocking of the hydrates gives cement its strength.