Secondary Aggregate: Difference between revisions
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The [[Mineral Products Association]] ([[MPA]])<ref>[https://mineralproducts.org/documents/Contribution_of_Recycled_and_Secondary_Materials_to_Total_Aggs_Supply_in_GB.pdf The Contribution of Recycled and Secondary Materials to Total Aggregates Supply in Great Britain]</ref> define three types of Aggregate: | The [[Mineral Products Association]] ([[MPA]])<ref>[https://mineralproducts.org/documents/Contribution_of_Recycled_and_Secondary_Materials_to_Total_Aggs_Supply_in_GB.pdf The Contribution of Recycled and Secondary Materials to Total Aggregates Supply in Great Britain]</ref> define three types of Aggregate: | ||
* Primary Aggregate - minerals that are extracted for aggregates use | * Primary Aggregate - minerals that are extracted for aggregates use | ||
* '''Recycled Aggregate''' - materials derived from [[Construction, Demolition and Excavation waste (mining waste)]] ([[CD&E Waste]]) including railway ballast (but excluding recycled soils and asphalt planings) | * '''[[Recycled Aggregate]]''' - materials derived from [[Construction, Demolition and Excavation waste (mining waste)]] ([[CD&E Waste]]) including railway ballast (but excluding recycled soils and asphalt planings) | ||
* [[Secondary Aggregate]] - materials which are the by-products of other industrial, production or extractive processes, including blast furnace iron and steel slags and [[Incinerator Bottom Ash]] ([[IBA]]) | * [[Secondary Aggregate]] - materials which are the by-products of other industrial, production or extractive processes, including blast furnace iron and steel slags and [[Incinerator Bottom Ash]] ([[IBA]]) | ||
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==Quality Protocol for Aggregates from Inert Waste== | ==Quality Protocol for Aggregates from Inert Waste== | ||
In order to produce a Recycled/Secondary Aggregate Specification a [[Quality Protocol]] was developed by the [[EA]] and [[WRAP]] in consultation with key stakeholders, including the construction industry, | In order to produce a Recycled/Secondary Aggregate Specification a [[Quality Protocol]] entitled 'End of Waste Criteria for the production of aggregate from inert waste' was developed in 2004 by the [[EA]] and [[WRAP]] in consultation with key stakeholders, including the construction industry, in order to demonstrate how [[Construction and Demolition Waste]] could be processed to an appropriate quality and conform with a [[European Aggregate Product Standard]]. The main purposes are/where: | ||
* clarifying the point at which waste management controls were no longer required; | * clarifying the point at which waste management controls were no longer required; | ||
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==Primary Product Uses/Specification== | ==Primary Product Uses/Specification== | ||
The same Quality Protocol sets out in Appendix B the standards and specifications | The same Quality Protocol sets out in Appendix B the standards and specifications which must be met for Recycled/Secondary Aggregate Specifications. In summary they include: | ||
*Unbound recycled aggregate: for use as Pipe bedding, Drainage | *Unbound recycled aggregate: for use as Pipe bedding, Drainage | ||
*Unbound recycled aggregate: for use as Granular fill, General fill, Capping | *Unbound recycled aggregate: for use as Granular fill, General fill, Capping | ||
*Unbound recycled aggregate: for use as sub base | *Unbound recycled aggregate: for use as sub base | ||
* | *recycled aggregate for concrete | ||
* | *recycled aggregate for asphalt | ||
* | *recycled aggregate for hydraulically bound mixtures | ||
*Reclaimed asphalt for use in bitumous mixtures (often termed planings) | *Reclaimed asphalt for use in bitumous mixtures (often termed planings) | ||