Aggregate Base

Aggregate base is typically composed of crushed rock capable of passing through a 3⁄4 in (19.05 mm) rock screen. The component particles will vary in size from 3/4 inch down to dust. The material can be made of virgin (newly mined) rock, or of recycled asphalt and concrete.

Base is used as a base course in roadways, as a base course for cement pads and foundations, and as backfill material for underground pipelines and other underground utilities.

"Base course" refers to the sub-base layer of an asphalt roadway. Generally consisting of larger grade aggregate, spread and compacted to provide a stable base for further layers of aggregates or asphalt pavement. Aggregate base course is often referred to as ABC.

Other articles related to "base, aggregate, aggregate base":

Base Course
... Base Course in pavements refers to the sub-layer material of an asphalt roadway and is placed directly on top of the undisturbed soil so as to provide a ... of a specific type of construction aggregate, it is placed by means of attentive spreading and compacting to a minimum of 95% relative compaction, thus providing the stable foundation needed to support either ... Aggregate Base (AB) is typically made of a recipe of mixing different sizes of crushed rock together forming the Aggregate which has certain desirable properties ...

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