Luton Borough Council have the ambition to become a carbon neutral town by 2040, 10 years ahead of the national target. To help facilitate this goal, the Council have worked in partnership with Miles Macadam to significantly reduce the carbon footprint of their latest highway improvement scheme. For several years, Luton BC have utilised Miles Macadam’s reduced carbon product Milepave™ in their maintenance programme, but decided to further their commitment to Net Zero, by contracting Miles Macadam in an innovative project to trial their latest zero carbon resurfacing material, BIOSEAL™. This is the first time this has been utilised on a large scale trial on the UK highway network.

Delivered Programme of Work:

  • 12,360m² of surfacing
  • 1,030 tonnes of 40mm Milepave
  • 45.55 t CO₂e total emissions

Environmental Savings:

  • Savings of 134 tonnes of aggregates and 19 tonnes of straight run bitumen over conventional materials
  • 24.10 t CO₂e saving over a conventional warm mix material and a non carbon neutral surfacing contractor (the equivalent of over 60,000 car miles)

Carbon Capture and Storage (CCS):

The trial involved the laying of Miles Macadam’s Milepave™ road surfacing material which achieves a 40% carbon saving over conventional surfacing materials due to its lower resource use, lower bitumen content and lower energy utilisation during manufacture. To further reduce the carbon footprint of the material, Miles Macadam resurfaced a section of the highway using BIOSEAL™, a biogenically modified asphaltic grout. This Biogenic material is a solid-state organic carbon by-product used within the road surface as a Carbon Capture and Storage (CCS) vessel to permanently lock away the carbon. This is the first step towards the creation of zero carbon road surfacing materials.

Zero Carbon BIOSEAL is the outcome of Carbon Capture and Storage equalling the Carbon Cost of Production