Aggregates are composed of geological materials such as gravel, sand and crushed rock. The size of the particles determines whether it is a coarse aggregate (e.g. gravel) or a fine aggregate (e.g. sand). The resulting concrete can be used in its natural state or crushed, according to its use and application
A brick is a type of construction material used to build walls, pavements and other elements in masonry construction. Block is a similar term referring to a rectangular building unit composed of clay or concrete, but is usually larger than a brick
A cement is a binder, a chemical substance used for construction that sets, hardens, and adheres to other materials to bind them together. It is most widely used material in existence and is behind only water as the planet's most-consumed resource.