
17/07/2025
This is the real deal.
Cement production is one of the world’s biggest sources of carbon emissions—accounting for about 7–8% of global CO₂ output, which is more than the entire aviation industry. The main problem lies in the chemical reaction during cement manufacturing, where limestone (calcium carbonate) is heated to produce lime, releasing CO₂ as a byproduct. With construction booming worldwide, reducing these emissions is essential for meeting climate goals.
A Canadian start-up called CarbonCure Technologies is tackling this issue by turning captured carbon dioxide into a strength-enhancing ingredient for concrete. Their innovative process injects CO₂ into wet concrete, where it reacts with calcium ions to form solid calcium carbonate. This not only locks the carbon away permanently but also improves the material’s strength, allowing builders to use less cement for the same performance. The result: lower emissions and a better product—paving the way for more sustainable construction without changing traditional practices.