aggregate defined in 1939 yearaggregate - Aggregate;
aggregate - Inert material combined with water and cement to form concrete. Except in certain special concretes (such as "no fines"), sand is used together with natural materials, like shingle, gravel, ballast, beach pebbles, broken rock, and stone, or artificial aggregates such as broken brick, crushed slag, hard clinker, or coke breeze. Rock and stone aggregates are graded and sized according to a British Standard specification. For a light concrete which can be sawn and worked, sawdust is used as the aggregate. Foamed slag, which is steelworks furnace slag which resembles an artificial pumice, also makes a light concrete with good heat-insulating properties. See Concrete.
near aggregate in Knolik
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