Worlds of David Darling
Encyclopedia of Science
Home > Encyclopedia of Alternative Energy


fine aggregate
Fine aggregate (sand)
coarse aggregate
Coarse aggregate (stone)
Images: Sonag Ready Mix LLC

Aggregate is a building material which is mixed with an adhesive such as cement to make concrete and mortar. Fine aggregate, usually sand or crushed stone, is used for smaller structural members where a smooth surface is required; coarse aggregate, such as pebbles or small angular stones, for larger members.

Related category