A concrete block is actually a Hollow & Solid Block. Portland cement is one ingredient used to make a concrete block. The blocks are used to build structures.
They are very economical yet durable building materials. The blocks are fire resistant as well as energy efficient (Eco-Friendly). Concrete blocks typically have hollows to allow for setting the blocks as well as to make the blocks lighter for handling.
Concrete block includes Hollow Block and Cement Brick, and they are very common building materials for the non-load bearing walls of buildings. Many buildings typically employ a concrete foundation and slab with a concrete block wall on the perimeter. Large buildings typically use copious amounts of concrete block.