Can ‘living’ roads be the route to cleaner driving?
Researchers from the University of Nottingham are pioneering the development of bio-based road paving materials – as a sustainable alternative to fossil fuel-based substances, supporting net zero targets.
Nottingham’s Transportation Engineering Centre (NTEC), in collaboration with the University of Cambridge, is looking at the potential of bio-additives to replace fossil fuel-derived bitumen in road construction.
Bitumen, a key component in traditional road paving, is derived from non-renewable fossil fuels. With rising environmental concerns and the push for net zero, the demand for alternative materials has grown.
The researchers evaluated bio-based substitutes to assess their performance, focusing on durability, resistance to low-temperature cracking, and overall sustainability.
The study found that bio-additives improve bitumen’s low-temperature performance by reducing cracking susceptibility and enhancing flexibility. They also extend fatigue life, reducing stress and improving long-term road durability.
By integrating solubility science, the research provides a framework for developing high-quality bio-based bitumen.
This breakthrough supports the transition towards eco-friendly infrastructure while maintaining the performance standards required for modern roadways.
One of the lead scientists, Professor Gordon Airey said, “The transition to sustainable alternatives for traditional bitumen is imminent. This research, alongside ongoing initiatives, solidifies Nottingham’s leadership in delivering practical, high-performance solutions for the future of road infrastructure in the UK and around the world.”
