Concrete is an artificial engineering material made from a mixture of Portland cement, water, fine and coarse aggregates together with a small amount of air. It is among the most widely used  materials for construction in the world. Concrete is the only major building material that can be delivered to the job site in a plastic state (that is, capable of being moulded). This unique quality makes concrete desirable as a building material because it can be moulded to virtually any form or shape. Concrete provides wide latitude in surface textures and colors and can be used to construct a wide More >