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Roads as carbon sinks

Built to connect. Built to remove.

Biochar turns asphalt infrastructure into durable carbon storage while supporting stronger, more resilient road materials.

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CO₂Removed permanently locked in.

37.4 billion tons of CO₂ to be removed from the atmosphere.
0.5–1 billion tons of CO₂ could be sequestered annually by 2050 with net zero infrastructure.
80% reduction in emissions for roads and buildings using net zero materials.
40M miles of road can be transformed to connect communities.

Want carbon neutrality in asphalt?

Biochar is the solution.

Biochar is a sustainable alternative to conventional mineral fillers in asphalt mixes. It provides permanent end-of-life carbon storage because it is irreversibly bound within the asphalt.

1

Recyclable by design

Asphalt containing biochar remains completely recyclable, supporting circular infrastructure without sacrificing reuse pathways.

2

Binder replacement potential

Biochar can replace up to 10% of asphalt binder by volume while maintaining technical performance.

3

Better material. Better planet.

Construction projects can lower their carbon footprint while enhancing material performance.

A green plant growing from a mound of black biochar

Driving impact with biochar.

  • Biochar is already the most significant carbon removal method for climate impact.
  • Biochar has locked up more than 700k tonnes to date, more than double all other carbon removal technologies combined.
  • Mixing biochar into road material offers a high-volume, contamination-tolerant carbon sink.
  • Biochar locks away carbon in asphalt for at least centuries without degradation.
  • Incorporating biochar into asphalt could extend road lifetimes and offer local authorities potential cost savings.

Biochar in asphalt

How it works.

Blend

Low-dosage application

Biochar can be incorporated into asphalt at low dosages, typically 2–10%, depending on the application and performance requirements.

Bind

Binder or aggregate

It can be integrated into the bitumen binder or as part of the aggregate, with aggregate blending offering a simpler, robust pathway.

Pave

Lower processing demand

Pilot projects in Europe have shown biochar-enabled asphalt can support lower-temperature processing and reduce application energy demand.

Why it improves asphalt

Stronger road performance.

Biochar’s porous structure improves asphalt performance by increasing strength and resistance while helping reduce water damage.

  • Improves strength, stiffness, and resistance.
  • Helps reduce the risk of water damage through low water absorption.
  • Can reduce chemical emissions from asphalt, improving air quality.
  • Improved temperature resistance in subtropical and tropical climates.
  • Increased stiffness and viscosity of asphalt binders, improving resistance to deformation.
  • Improved ecological properties due to long-term carbon storage.
A yellow asphalt road roller

Proven. Scalable. Sustainable.

Ready for existing infrastructure.

Biochar has significant potential to decarbonize construction by serving as a sustainable partial substitute for bitumen in asphalt binders and as a substitute for cement in concrete.

High-volume potential Road networks create a large, repeatable application path for carbon storage.
Infrastructure compatible Biochar can fit into existing asphalt workflows and material systems.
Circular economy Biochar asphalt supports recyclable road materials and long service life.
Lower emissions Better roads, lower emissions, and a stronger future for communities.

Original source

View the brochure.

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Build the future. Remove carbon. Connect communities.

Transforming infrastructure into long-term carbon storage, one mile at a time.