Engineers to use Biochar to Make Asphalt Roads More Sustainable

Apr 30, 2024

    Project aims to replace traditional cementitious materials with biochar, significantly reducing CO2 emissions in the process.

    The article discusses a collaboration between Aston University’s civil engineering experts and the road surfacing company Miles Macadam to develop more sustainable alternatives to traditional road surfaces.

    Key points:

      • Aston University and Miles Macadam have entered a Knowledge Transfer Partnership (KTP), which involves an academic partner, a business, and a researcher working together to improve competitiveness through knowledge sharing
      • The project aims to find a sustainable replacement for fly ash, a waste product currently used in Miles Macadam’s grouted macadam road surfacing material. Fly ash supply is variable and must be imported
      • The team will explore using biochar, a carbon-rich material produced from organic waste like wood or agricultural residues, as an alternative to fly ash in the grouts
      • Biochar could reduce costs, conserve virgin resources, and lower emissions compared to traditional cementitious materials. The materials will be tested for strength, water absorption, freeze-thaw resistance, and real-world performance
      • The 30-month project involves expertise from Aston’s civil engineering, chemical engineering, and applied chemistry departments. It runs until July 2026 and is co-funded by Innovate UK
      • Using biochar and other sustainable alternatives can help Miles Macadam and their clients reduce their carbon footprint and environmental impact in road construction

    Continue reading at Ashton University