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Aggregate

Aggregates are used extensively in construction but their purpose can be confusing.

Generally though, aggregates can be defined in two ways; those with a range of particle sizes (fines) and those with a uniform particle size (without fines).


Aggregates with fines are used to construct a solid stable base and as such are used for pathways, driveways and construction bases. This includes products such as roadbase which has some flexibility for ground movement. Metal dust or crusher dust are cheaper recycled alternatives but do not tolerate as much ground movement and may crack over time.


Products with a uniform particles size include blue metal and recycled aggregates. One of the uses for blue metal is mixing with sand and cement to make concrete.


The larger sized blue metals and recycled aggregates (14mm and 20mm) are used in conjunction with slotted agricultural pipe to provide drainage behind retaining walls.


Also in the aggregates range Materials in the Raw sells corefill. Corefill is a blend of blue metal and coarse sand. This ready made product is used for filling blocks when building structural retaining and block walls.


For more information on the use of aggregates check out our resource and DIY pages.

 



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