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Products & Distribution

C-12 Black is an advanced cold mix asphalt solution that combines engineered carbon technology with proven road surfacing performance. Manufactured using waste-derived engineered carbon, C-12 Black delivers enhanced strength, flexibility and durability while helping reduce emissions and divert waste from landfill. The solvent-free, cold-applied formulation provides a safer, more sustainable alternative to traditional road repair materials, making it ideal for roads, highways, maintenance programs, local government networks and infrastructure projects. Designed for performance, practicality and environmental responsibility, C-12 Black is helping build better roads for a more sustainable future.

C-12 Black

C-Twelve Plus is an advanced soil stabilisation solution designed to improve the performance, durability and sustainability of road infrastructure. By combining engineered carbon with proprietary emulsion technology, C-Twelve Plus strengthens in situ materials, enhances soil cohesion and extends pavement life while reducing the need for imported construction materials. This innovative approach supports lower environmental impact through carbon sequestration, waste reduction and more efficient construction practices, delivering a smarter and more sustainable solution for road and infrastructure projects. Available through Hiway: https://hiway.au/products

C-12 Plus

About

C-Twelve is an Australian materials technology company focused on developing sustainable cold mix asphalt solutions for modern road infrastructure. By integrating engineered carbon derived from waste materials, C-Twelve delivers durable, high-performance products that improve pavement performance, reduce waste and permanently sequester carbon. The result is a smarter, more sustainable approach to road repair, maintenance and construction.

Find out more about C-Twelve

“During all the trials C-Twelve have being vey open and honest with the CBH group with the developing product. We have been able to provide all departments of our organisation the necessary information after each trial. Communication and on-site work between CBH and C twelve has being a huge success. Regular meetings and site visits have really strengthened to the companies. Look forward to moving this to bigger and better things.”

Craig Gault, Grain Covers and Portable Infrastructure Manager CBH

“For over 18 months the Hiway Group and C12 have engaged in a collaborative exclusive long-term partnership, developing game changing sustainable solutions in the field of insitu recycling of road pavement materials to derive substantial engineering benefits. The excellent performance in laboratory and field trials to date of the C12 treatment demonstrates potential to provide a competitive, reduced carbon insitu cold recycled product with properties similar, or superior, to an asphalt material”

Allen Browne, Executive General Manager – Technical & Innovation Hiway Group

C-Twelve is pioneering the next generation of sustainable road surfacing products, combining high performance with environmentally responsible outcomes.

Technology

C-Twelve uses a unique covalent bonding process that binds our proprietary emulsion technology to engineered carbon.

This creates a superior surfacing material suitable for applications ranging from:

Soil stabilisation
Pothole repair
Maintenance overlays
Full-scale cold mix asphalt pavement work

Engineered carbon for C-Twelve is created by heating biomass in a controlled low-oxygen environment. Instead of releasing carbon back into the atmosphere as CO₂, the process converts it into a stable, durable form. When incorporated into road infrastructure, that carbon remains locked within the pavement for its operational lifespan.

The result:

More durable than traditional hot-mix asphalt
Improved performance
Reduced environmental harm
A carbon-negative road building solution

Learn about our technology

Case Studies

C-Twelve has successfully delivered a range of projects demonstrating the performance, durability and environmental benefits of our engineered carbon road surfacing solutions. From local road maintenance and repair programs to larger infrastructure applications, C-12 Black has proven its ability to deliver long-lasting results in a variety of operating conditions. These real-world projects highlight the advantages of engineered carbon technology, including enhanced pavement performance, reduced maintenance requirements, improved sustainability outcomes and lower lifecycle costs. Our case studies showcase C-Twelve’s commitment to developing innovative, practical and environmentally responsible solutions for the future of road infrastructure.

Paving the way to a carbon-negative future

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LET’S BUILD BETTER ROADS – SUSTAINABLY

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Technology

Case Studies