Commonly used asphalts in the UK are asphalt concretes (previously termed ‘bituminous macadams’ or ‘bitmacs’), hot rolled asphalts (HRAs), and stone mastic
asphalts (SMAs). Essentially, asphalt is a combination of aggregate (crushed rock and /or sand) and bitumen (derived from crude oil).
Asphalt is commonly used in the construction of roads, pathways, car parks, driveways and play areas.