TRAPPED IN CONCRETE

Across the world, over 9 billion tonnes of concrete is produced each year. Some CO2 removal technologies are targeting this large-scale process by trapping the gas within concrete.

When used by concrete producers, these machines inject captured CO2 into the concrete while it is being mixed. This causes the CO2 to mineralise, meaning it becomes a solid mineral, like carbonate. As a solid mineral the carbon increases the overall strength of the concrete while preventing the CO2 from being released back into the atmosphere.

CO2 needs to be added to concrete mix before it solidifies