Secondary Aggregate
Generally Secondary Aggregate 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.
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 [1]
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).