Secondary Aggregate: Difference between revisions

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[[Category:Tonnage & Waste Types]]

The 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

* Recycled Aggregate - materials derived from [[Construction, Demolition and Excavation waste (mining waste)]] ([[CD&E Waste]]) including railway ballast

* '''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]])

[[File:MPA Summary Image of Aggregates.png|left|Fig 1 of MPA Briefing Document on Aggregates]]__TOC__

==Market Size and Context==

Generally in the waste sector [[Secondary Aggregate]] can be used to describe both '''Recycled Aggregate''' and [[Secondary Aggregate]] of any sand and stone material that has been used previously (further details on the waste that falls into this broad category is listed on the WikiWaste page [[Soil, Rubble, Hardcore]]), and recycled or recovered to a '''Secondary Aggregate Specification'''. In this context Secondary Aggregate can also be produced from the [[Soil, Rubble, Hardcore]] from Local Authorities - primarily from waste deposited by the public at [[Household Waste Recycling Centres]] ([[HWRC]]).

The overall split of Aggregates (for 2017) is summarise below from the same MPA document:

[[File:Aggregates Image from MPA.png|800px|left|Aggregates Image from MPA briefing document]]

~~Generally~~ [[~~Secondary Aggregate~~]] ~~is used~~ in the ~~ware used~~ to ~~describe both Recycled Aggregates from~~ and ~~or the description of any is sand and stone material that has been used previously~~ and ~~recycled or recovered to~~ a ~~Secondary~~ Aggregate ~~Specification~~. ~~Further details on~~ the waste that ~~falls into this broad category~~ is ~~listed on~~ the ~~WikiWaste page~~ [[~~Soil, Rubble, Hardcore~~]].

==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 2004 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;

* providing users with confidence that the aggregate they purchase conforms to an approved industry specification defined in accordance with an appropriate European aggregate standard;

* providing users with confidence that the aggregate is suitable for a use within a designated market sector(s) including by conforming with the industry standard; and

* protecting human health and the environment (including soil).

The Quality Protocol for It can be downloaded from the [[Mineral Products Association]] website <ref>[https://mineralproducts.org/documents/aggregates_quality_protocol.pdf MPA Website PDF]</ref>

==Primary Product Uses/Specification==

The same Quality Protocol sets out in Appendix B the standards and specifications of 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 Granular fill, General fill, Capping

*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)

~~In order to produce a~~ Secondary Aggregate ~~Specification a [[Quality Protocol]] was developed~~ by the ~~[[EA]] and [[WRAP]] in consultation with key stakeholders~~, ~~including~~ the ~~construction industry, in 2004 in order~~ to ~~demonstrate how [[Construction~~ and ~~Demolition Waste]] could be processed~~ to ~~an appropriate quality~~ and ~~conform with~~ a ~~[[European Aggregate Product Standard]] and achieve an [[End of Waste Criteria]]~~. ~~It can be downloaded~~ from the ~~[[Mineral Products Association]] website <ref>[https://mineralproducts.org/documents/aggregates_quality_protocol.pdf MPA Website PDF]</ref>~~

The specification of Recycled/Secondary Aggregate is often also referred to primarily by the particle size of the material, the main ones being:

* '''6F4''' fine grading 0/32mm recycled aggregate from crushed hardcore from 32mm down to dust. Normally used as bulk fill to build up levels/as a capping layer

* '''6F5''' coarse grading 0/80mm (previously 6F2 recycled) - recycled aggregate as per 6F4 but from 80mm down to dust.

* '''Type 1''' - recycled aggregate containing concrete and asphalt from 40mm down to dust. Normally used for road and pathway construction

* '''Fines''' - a 6mm to dust product. Mainly used to backfill trenches containing cables

* '''Planings''' - recycled tarmac/asphalt plannings from roads. Normally used for the preparation of driveways and as a sub base to roads

~~Secondary Aggregate can also be produced from the [[Soil, Rubble, Hardcore]] from Local Authorities - primarily from waste deposited by the public at [[Household Waste Recycling Centres]] ([[HWRC]]).~~

==Reference==

@@ Line 1: / Line 1: @@
 [[Category:Tonnage & Waste Types]]
-The 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
-* Recycled Aggregate - materials derived from [[Construction, Demolition and Excavation waste (mining waste)]] ([[CD&E Waste]]) including railway ballast
+* '''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]])
+[[File:MPA Summary Image of Aggregates.png|left|Fig 1 of MPA Briefing Document on Aggregates]]__TOC__
+<br clear='left'/>
+==Market Size and Context==
+Generally in the waste sector [[Secondary Aggregate]] can be used to describe both '''Recycled Aggregate''' and [[Secondary Aggregate]] of any sand and stone material that has been used previously (further details on the waste that falls into this broad category is listed on the WikiWaste page [[Soil, Rubble, Hardcore]]), and recycled or recovered to a '''Secondary Aggregate Specification'''. In this context Secondary Aggregate can also be produced from the [[Soil, Rubble, Hardcore]] from Local Authorities - primarily from waste deposited by the public at [[Household Waste Recycling Centres]] ([[HWRC]]).
+The overall split of Aggregates (for 2017) is summarise below from the same MPA document:
 [[File:Aggregates Image from MPA.png|800px|left|Aggregates Image from MPA briefing document]]
 <br clear='left'/>
-Generally [[Secondary Aggregate]] is used in the ware used to describe both Recycled Aggregates from and or the description of any is sand and stone material that has been used previously and recycled or recovered to a Secondary Aggregate Specification. Further details on the waste that falls into this broad category is listed on the WikiWaste page [[Soil, Rubble, Hardcore]].
+==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 2004 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;
+* providing users with confidence that the aggregate they purchase conforms to an approved industry specification defined in accordance with an appropriate European aggregate standard;
+* providing users with confidence that the aggregate is suitable for a use within a designated market sector(s) including by conforming with the industry standard; and
+* protecting human health and the environment (including soil).
+The Quality Protocol for It can be downloaded from the [[Mineral Products Association]] website <ref>[https://mineralproducts.org/documents/aggregates_quality_protocol.pdf MPA Website PDF]</ref>
+==Primary Product Uses/Specification==
+The same Quality Protocol sets out in Appendix B the standards and specifications of 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 Granular fill, General fill, Capping
+*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)
-In order to produce a Secondary Aggregate Specification a [[Quality Protocol]] was developed by the [[EA]] and [[WRAP]] in consultation with key stakeholders, including the construction industry, in 2004 in order to demonstrate how [[Construction and Demolition Waste]] could be processed to an appropriate quality and conform with a [[European Aggregate Product Standard]] and achieve an [[End of Waste Criteria]]. It can be downloaded from the [[Mineral Products Association]] website <ref>[https://mineralproducts.org/documents/aggregates_quality_protocol.pdf MPA Website PDF]</ref>
+The specification of Recycled/Secondary Aggregate is often also referred to primarily by the particle size of the material, the main ones being:
+* '''6F4''' fine grading 0/32mm recycled aggregate from crushed hardcore from 32mm down to dust. Normally used as bulk fill to build up levels/as a capping layer
+* '''6F5''' coarse grading 0/80mm (previously 6F2 recycled) - recycled aggregate as per 6F4 but from 80mm down to dust.
+* '''Type 1''' - recycled aggregate containing concrete and asphalt from 40mm down to dust. Normally used for road and pathway construction
+* '''Fines''' - a 6mm to dust product. Mainly used to backfill trenches containing cables
+* '''Planings''' - recycled tarmac/asphalt plannings from roads. Normally used for the preparation of driveways and as a sub base to roads
-Secondary Aggregate can also be produced from the [[Soil, Rubble, Hardcore]] from Local Authorities - primarily from waste deposited by the public at [[Household Waste Recycling Centres]] ([[HWRC]]).
 ==Reference==