Crushed stone is the mineral commodity upon which almost everything is built. It is used in construction, manufacturing, chemical and agricultural industries throughout the world. ... Starting at top left and going clockwise: crushed concrete, crushed construction rubble, crushed brick, and crushed gravel with asphalt. Recycling.
Concrete is a construction material composed of Portland cement and water combined with sand, gravel, crushed stone, or other inert material such as expanded slag or vermiculite. The major constituent of concrete is aggregate which may be natural (gravel or crushed rock with sand) or artificial (blast furnace slag, broken brick and steel shot).