Aggregate

The collective term for gravel, sand and stone, which, amongst other things, can be used to make concrete. Aggregate can be compacted to firmly fill a space and is often bound together with cement, to make concrete or bitumen, to re-surface roads.

Aggregates are described as 'fine' or 'coarse' according to whether they are retained on or passed by a sieve of a specified aperture size.

'Aggregate' is also used as a loose term to describe any quarried or dug material which has been processed.