As far as possible preference shall be given to natural aggregates.

Quietstone is a material made from natural aggregates and complex resins.

Natural aggregates: By far the most widely-used aggregates for nano-composites are naturally occurring.

Types of fill that can be used in geosystems include excavated arisings, imported recycled or natural aggregates, weathered rock and soft clay sediments.

Manufactured aggregates such as ceramics and glass are also used for more specialised projects as the supply costs are considerably greater than for natural aggregates.

Natural Aggregate: A Primer Aggregate production in the U.S. averages 9.5 tons per person per year.

Traces remain of older parts of the temple carved out of the cliff face, a natural aggregate of volcanic debris which quickly wears away - the pebbly beach here is the result.

Recycled aggregates (from construction, demolition and excavation waste) are increasingly used as partial replacements of natural aggregates, while a number of manufactured aggregates, including air-cooled blast furnace slag and bottom ash are also permitted.

The existing floor slab can be cut or sanded and the natural aggregate will be the feature or a topping slab with a minimum thickness of 50 mm can be added on top of the existing slab.