Leading provider of environmental solutions for industrial and specialty by products Harsco Environmental division opened two new SteelPhalt asphalt plants in UK. The new plants, located in Cardiff in Wales and an additional plant at the existing Rotherham in England manufacture sustainable asphalt products using 95% recycled aggregates. This manufacturing process has a carbon footprint that is 40% less than the asphalt manufacturing process that uses natural aggregate.The new plant in Cardiff is situated to efficiently utilize slag from the surrounding area and is designed to produce up to 300,000 tonnes of sustainable asphalt products per year for the roads of South Wales and South West of England. It is the first permanent asphalt plant in Cardiff in over 70 years.The new plant in Rotherham will be located on the same site as SteelPhalt’s existing Rotherham plant. The existing SteelPhalt plant in Rotherham is the busiest independent asphalt plant in the UK. The opening of an additional plant on the site will allow for an increase in service and product offering as demand for more sustainable asphalt products increases.Steel slag aggregates regenerate their surface texture with use and therefore maintain a high level of skid resistance throughout their life. A durable material, steel slag retains its strength even after years of road use thanks to its strong affinity to bitumen, limiting water damage and the stripping of binder. The natural shape and interlocking properties of steel slag aggregates improves resistance to permanent deformation of the asphalt, providing it with a superior resistance to rutting. Additionally, using steel slag aggregates to create asphalt avoids the use of quarried materials and while also avoiding residual slag product from being sent to a landfill.