Que 1: What is Cement? Why is it called hydraulic cement ?
Ans: Cement is a material with adhesive and cohesive properties. when mixed with mineral frag,ents and water, binds the particles into a compact mass. For construction purpose, cement is used to bind stones, bricks sand etc.
The materials which set and harden in the presence of water are said to possess hydraulic properties. As cement gets strength due to the chemical action between cement and water( known as hydration ) and its ability to harden under water, it is known as hydraulic cement.