Basalt Bitumen Coated Fibres are especially designed for dispersion in the asphalt mix. The Bitumen coating ensures good adhesion to the mixture to enhance the mechanical properties of your project. Like all Basalt products, these fibres are naturally resistant to alkalis and acids, as well as extreme temperatures. These fibres will help reduce crack affinity and rutting, increasing project longevity. These fibres are 18 mm in length since this is the length that has shown to be the most effective in improving asphalt performance. These fibres are also available uncoated for concrete applications - please ask us for more information.