Gravel is a loose aggregation of small, variously sized fragment of rock.
Construction Gravel, which comes from crushed limestone, is utilized to make a solid foundation.
Gravel, along with sand, is utilized for the manufacture of concrete, as well as for mixing with asphalt as part of road construction. It can be used as the base layer for roads before being covered with tarmac. It is also commonly used to surface driveway, patio or walkway in your own backyard.