Aggregates are the raw materials for construction buiding, and they are inert granular materials such as sand, small-size gravel, or crushed stones. They along portland cement and water, are an essential ingredient in concrete making.Construction aggregate , or simply “aggregate“, is a broad category of coarse particulate material used in construction, including sand, gravel, crushed stone, slag, recycled concrete and geosynthetic aggregates.Aggregates are a component of composite materials such as concrete and asphalt concrete; the aggregate serves as reinforcement to add strength to the overall composite material.
Aggregate crusher major means jaw crusher, impact crusher, in some aggregate crushing plant, cone crusher and VSI crusher is needed.Jaw crusher is the major crushing equipment in aggregate plant. Jaw crusher play roles as primary crushing to break large raw rocks, stones into small particles.Impact crusher is an important crushing equipment in aggregate plant to produce high quality aggregate. The major feature of impact crusher is that the final produce of impact crusher is in cubical shape, which is suitable to be used as high quality aggregate.
The technology of three crushing stages, with jaw, cone, impactor, VSI crushers, makes it possible to produce cubical-shaped aggregate (Aggregate and gravel from compact rocks for civil construction specifications) in fractions of 40-70 mm, 20-40 mm, 5-20 mm (round holes) and manufactured sand in a 0-5 mm fraction. The flexible technology facilitates adaptation of production to market requirements and an output of narrow fractions and aggregate for railway ballast.
There are several types of crushers to be choosed as stone aggregate crusher machine used in stone aggregate crushing plant.The Big materials are fed to the jaw crusher evenly and gradually by vibrating feeder through a hopper for the primary crushing. After first crushing, the material will transferred to impact crusher or cone crusher by belt conveyor for secondary crushing ; the crushed materials will then transferred to vibrating screen for separating.
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