Abstract
Because of the international mission to decrease the use of new carbon-containing resources and to regenerate waste streams, sustainable asphalt pavement solutions will need an alternative for bitumen. A very promising solution to this challenge is found in waste biomasses, as their abundance and structural similarity to bitumen make them a good candidate for partial bitumen replacement. This research will focus on two biomasses and their combination, specifically lignin and waste cooking oil, and their potential implementation in bitumen. Through an in-depth laboratory experimental program, four essential characteristics of bio-modified bitumen will be investigated to lead to scientific-based recommendations for industry stakeholders and future researchers. These four aspects consist of the biomass-bitumen mixing conditions, the short- and long-term chemo-rheological behavior of the bio-modified bitumen blends, their storage stability, as well as their adhesion properties. Therefore, with the completion of this novel and comprehensive approach; procedures and protocols will be proposed regarding the production and assessment of bio-modified bitumen for field implementation. The outcomes of this research will significantly support global sustainability goals such as decreasing carbon footprint while leading to resilient pavement infrastructure.
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