Various types of Limestone Stone is made available by us that can be used to make other building materials such as cement, mortar, and concrete. It can even be crushed and used as an aggregate when paving roads. The term aggregate simply refers to crushed stones and minerals for the construction of road-building purposes. Crushed limestone is a key ingredient in construction aggregate, the solid base of many roads. Its also used in the asphalt that covers the road. Limestone is a crucial material for road construction and shows no signs of slowing down. Limestone Stone is available in various designs.