Road base is a material which is also known as road rock, road gravel, aggregate base and asphalt base. It is used to build road as it allows passing rain water and preventing the road from turning into a bed of mud. This base material is primarily used for making driveways and pathways and it is a good material for repelling water. The road base material is also used for pipe bedding and comes in various sizes. The aggregate base used for making road base by mixing different sizes of crushed rock having different properties. An aggregate used for making road base is basically made from newly quarried rocks. Sometimes, the road base is also made from recycled asphalt concrete or cement concrete. Other benefit of using road base is, it is very easy to work with and gives a nice attractive finish to the road and is cost effective as well.