Formed during the manufacture of iron, molten blast furnace slag is cooled and processed in three ways to form slag aggregates for different applications.
Tarmac AgSlag is a high quality, calcium rich product providing essential nutrients to soils in a slow release form.
Steel slag is produced during the steel making process where, after air cooling, a dense rock material is processed and sized into specific products suitable for diverse applications.
An ideal aggregate for base, binder and surface course asphalt products, the inherent properties in steel slag are assessed in accordance with the requirements of the European standard EN 13043 and can produce asphalt materials exhibiting superior properties to those manufactured with primary aggregate.
Slag aggregates are now often preferred in specification as they are recognised to be a valuable material supporting versatile performance qualities.