Cement manufactured by Solidia requires less energy to produce than conventional cement, and is hardened by injecting industrial waste CO2.
Solidia’s innovation can sequester CO2 emissions from industrial processes into construction and building materials. Solidia uses a chemical reaction during their cement production that requires less limestone and lower temperatures than conventional methods, resulting in reduced CO2 emissions. To make concrete, the cement and sand mix is hardened and cured utilizing mainly waste CO2 instead of water. According to Solidia, the technology can reduce CO2 emissions by up to 70% compared to conventional production. Solidia’s concrete is ready in about 24 hours, compared to 28 days with conventional methods. The durability and strength of Solidia’s concrete was independently verified by CTLGroup.
Solidia has partnered with LafargeHolcim, a building materials company operating in 61 countries, through which their technology will be commercialized. Their first products to be introduced to the market are paving stones, roof tiles and concrete blocks.
Why you should care
The production of cement, which is used to make concrete, is responsible for up to 5% of total global carbon emissions. By curing the cement using waste CO2 rather than water, Solidia effectively reduces the carbon and water footprint of concrete.