In this project a technology concept for bioasphalt will be developed as a circular material for pavement construction. This bioasphalt is an asphalt mixture which consists of 100 % reclaimed asphalt material which reduces waste streams. Since the included fossil-based bitumen is heavily aged, the addition of fresh binder components is essential during asphalt recycling. For bioasphalt the typically required fossil-fuels are replaced by sustainable biobinders. The key innovative aspect is the identification and further development of suitable sustainable materials as biobinders, which will be systematically characterized based on mechanical and chemical laboratory testing. A suitable asphalt mix for bioasphalt will be designed and validated in terms of its performance. Finally, the bioasphalt is validated in the relevant environment by being produced in a large-scale asphalt mixing plant and by constructing two test sections. A sustainability and economic assessment of the novel technology concept is used to verify the environmental and economic impacts.
Funding initative: circularity with recycled and biogenic raw materials
Funding organisation: VolkswagenStiftung (Website)
Titel: Technology Concept for Bioasphalt: 100% Recycling @ 0% Fresh Fossil Fuels
Acronym: NOBIT ("No Bitumen")
Duration: 36 month (1st February 2024 – 31st January 2027)
Project leader: TU Braunschweig, Braunschweig Pavement Engineering Centre (ISBS)
Project partner:
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TU Wien, Institute of Material Chemistry, Atmospheric Physical Chemistry (TUW)
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Eastern Switzerland University of Applied Sciences, Institute of Environmental and Process Engineering (UMTEC)
Work packages
- AP1: „Project management“
- AP2: „Screening of recycling methods and circular sustainable biomaterials“
- AP3: „Mechanical biobinder evaluation“
- AP4: „Chemical biobinder evaluation“
- AP5: „Technology concept for bioasphalt mix design“
- AP6: „Technology concept for bioasphalt performance evaluation“
- AP7: „Up-scaling technology concept for bio-asphalt in relevant environment“
- AP8: „Technology concept for life cycle evaluation“