Gravel
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Gravel is a loose aggregation of rock fragments. Gravel occurs naturally on Earth as a result of sedimentary and erosive geological processes; it is also produced in large quantities commercially as c
Gravel (largest fragment in this photo is about 40 mm (1.6 in))
Sand and gravel separator in a gravel pit in Germany
A gravel road in Finland
Naturally occurring sedimentary gravel bed
Construction aggregate
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Construction aggregate, or simply aggregate, is a broad category of coarse to medium-grained particulate material used in construction. Traditionally, it includes natural materials such as sand, grave
Gravel
…about 3,000 lb (1,400 kg). Gravel is an important commercial product, with a number of applications. Almost half of all gravel production is used as aggregate for concrete. Much of the rest is used for road construction, either in the road base or as the road surface (with or without asphalt or other binders…
A limestone quarry in Tennessee, U.S.
10 mm graded crushed basalt rock or aggregate, for use in concrete, called "blue metal" in Australia
20 mm graded aggregate
Class 3 road base