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AGGREGATE. A collection of particular persons or items, formed into one body; as a corporation aggregate, which is one formed of a number of natural persons; the union of individual charges make an aggregate charge.

A Law Dictionary, Adapted to the Constitution and Laws of the United States. By John Bouvier. Published 1856.
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(4) It is suggested that, prior to mix proportion design and preparation of concrete using recycled concrete aggregates, it is necessary to obtain the details of demolished concrete such as its strength grade or water/binder ratio and of the characteristics of flaws in recycled aggregate induced by processing the demolished concrete.
Recycled concrete aggregates are different from virgin aggregates due to the amount of cement pastes remaining on the surface of the recycled aggregates after undergoing the recycling process [14, 15].
Shen, "Evaluation of pre-coated recycled concrete aggregate for hot mix asphalt," Construction and Building Materials, vol.
This allows the inclusion of about 50 percent recycled asphalt pavement." Although the California Department of Transportation (Caltrans) initially limited the amount of RCA to 50 percent by weight of the total aggregate, a special provision in 2003 enabled the use of 100 percent of recycled concrete aggregate, according to the Caltrans report, "Summary of California Recycled Concrete Aggregate Review."
Many states (at least 38) are currently using recycled concrete aggregate as aggregate base.
"Recycled concrete aggregate produced from demolished pavements in three geographically-dispersed locations in Washington State was used to perform tests on aggregate, characteristics, fresh concrete properties, and hardened concrete properties," Wen, McLean and Willoughby report.
I embarked on the project of recycling tyre waste particles into concrete aggregate by acid treatment and activation process,' Fatma told Muscat Daily .
Groom helped create national testing and specification of concrete and concrete aggregate norms for the American Society of Testing and Materials.
Utilisation of recycled concrete aggregate (RCA) in concrete has been engaged due to awareness of society in natural resources protection.
It is generally agreed that there is much difference in physical properties between recycled concrete aggregate and ordinary aggregate: high porosity, high water absorption, high void ratio, high abrasion loss, and low bulk density [4].
This leads to the introduction of the RCA concrete aggregate as an alternative sustainable material for asphalt mixes.