Ontario Construction News staff writer
A new study from Carbon Upcycling, the Minnesota Department of Transportation (MnDOT), and the National Road Research Alliance (NRRA) shows that CO2-enhanced concrete mix is stronger and more durable than traditional concrete. The results show the mix increases strength by 28 per cent and reduces cement use by 12.3%, making it a promising option for more sustainable infrastructure.
The study tested 16 concrete mixtures on an active Minnesota highway. Carbon Upcycling’s mix performed better than conventional concrete, demonstrating improved strength and durability while using less cement — a major source of carbon emissions in concrete production.
Key findings:
- 28% stronger: Carbon Upcycling’s mix showed a 28% increase in strength at 28 days compared to traditional concrete.
- 12.3% less cement: The CO2-enhanced mix reduced cement use by 12.3%, lowering carbon emissions and material costs.
- Better durability: The mix demonstrated 32% greater resistance to chloride, increasing its longevity in harsh environments.
The study also found that Carbon Upcycling’s mix is easy to handle and can be used with existing construction methods. It retains the workability of traditional concrete, meaning it can be seamlessly incorporated into current construction projects.
“This study shows that we can lower concrete’s carbon footprint without sacrificing performance,” said Apoorv Sinha, CEO of Carbon Upcycling. “Our mix strengthens infrastructure and reduces emissions at the same time.”
The cement industry is responsible for about 8% of global carbon emissions, and demand for cement is expected to double by 2050. As governments and companies look to meet climate goals, solutions like Carbon Upcycling’s CO2-enhanced concrete could play a key role in reducing emissions from the construction sector.
The study’s results could help guide future infrastructure projects across North America, as governments and companies look for low-carbon alternatives for road construction.
For more information, visit www.carbonupcycling.com.