Pozzolans are natural or else synthetic materials that include silica in reactive forms. It reacts with calcium hydroxide produced by hydrating cement to form extra cementations materials while it is finely divided. Its composition is as follows:
Pozzolanic Materials (Volcanic ash, fly ash plus Calcined clay or silica fumes.)
It is typically used in marine structures, construction near the seashore, hydraulic structures, dam construction and so on.
It is as well used in pre-stressed and post-tensioned concrete members.
Since it gives a better surface finish, it is employed in decorative as well as art structures.
It is also used in the construction of precast sewage pipes.
Its price ranges are minimum Rs 280/Bag and Maximum Rs 380/Bag