A new type of concrete that forgoes the necessity for cement has been confirmed as carbon-negative following lab tests undertaken at the University of Oxford.

Developed by CarbonMeta Technologies, Inc (CarbonMeta), EarthCrete Cementless Concrete was found to capture up to 10% carbon dioxide (CO2) by weight during production. 

Accounting for around 8% of global CO2 emissions, the notoriously hard-to-abate concrete manufacturing industry could see its carbon footprint significantly reduced with innovations in carbon-negative concrete. 

According to CarbonMeta, a single project using 1,200 metric tonnes of EarthCrete concrete mixed with water can absorb up to 132 atmospheric metric tonnes of CO2, equivalent to 66 diesel vehicles each being driven 12,000km per year. 

Commenting on the technology, Lloyd Spencer, CEO, CarbonMeta, said, “The world is currently bouncing back from the shocks of the last few years, and we are seeing concerted efforts to seek out ways to address our climate crisis.” 

“We are confident that our positive trials of EarthCrete with Oxford University present opportunities for the energy and built environment to offset its carbon emissions.” 

The trials follow a US$750,000 purchase order received by CarbonMeta for the delivery of the cementless concrete to be used in commercial and residential solar panel projects in the US. 

Alongside academics from the university, the company has also launched a trial that aims to explore the commercial potential for turning plastic waste into hydrogen. 

“These preliminary tests confirm that CarbonMeta can deliver carbon-negative building materials products using industrial waste streams that captures atmospheric CO2, whilst reducing the planet’s overall carbon footprint,” added Mohammed Khalil, Managing Director, CarbonMeta Research.