Återvinning av asfalt - en fallstudie i Malmberget

Sammanfattning: This thesis investigates how manufacturing of asphalt containing recycled materials can be conducted when the purpose is to use the recycled material in another road construction. The study show that manufacturing of asphalt containing recycled materials then can be conducted in three ways, through hot, less hot and cold manufacturing processes. The possible use of the final products is dependent on the manufacturing processes since they result in different properties of the products. The choice between different products is not only affected by the possible use and the properties but also the environmental and economical value of the products. Previous studies have shown that environmental and economical value assessments between different recycling methods, associated products and products with no recycled materials is difficult to go through with and that it’s not being realized by asphalt manufactures, recyclers and buyers (public authorities and companies). One area of interest is the law of public procurement in Sweden, which makes it difficult for public authorities to make environmental demands when they procure services and products. This difficulty affects the asphalt manufacturers incentive and possibility to recycle. This thesis also investigates the possibility to recycle asphalt from Malmberget in Sweden and the results show that there are many practical possibilities as well as driving forces for recycling. One of the most important driving forces being the transport distance to landfill areas. The implementation is on the other hand affected by different guidelines for contaminated asphalt, the possibility to use mobile asphalt plants and collaboration possibilities with the local county, the public authority ”Trafikverket” and when the asphalt can be recycled.