Who Invented Concrete

The material that is being used in construction of building is called as concrete. It is a hard substance usually made from different types of sand or other components that are bonded together with the mixture of water and cement. Cement and aggregates forms part of the concrete. Aggregate may be the combination of sand, gravel, crushed stone, ashes, slag, burned clay, etc., Fine aggregate is used in making smooth concrete surfaces and coarse aggregate […]