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Aggregate and ballast recycling

Aggregates making up the granular layers which form part of civil engineering infrastructures were traditionally extracted from quarries and pits with very negative environmental impacts. Because of this, the use of other types of materials acquired by recycling has been proposed, especially those coming from construction and demolition waste (C&DW's) for example, concrete waste. This way these infrastructures contribute to the reduction of their storage needs avoiding the impact associated with them. The purification of ballast for its reuse on jobs is an on-site recycling example.

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