Concrete4Change Ltd

Company Description: Concrete is the second most consumed material in the world (second only to water) and accounts for 8% of the global CO2e emissions. Recently, several restrictions for the construction industry have been introduced, including a cap on CO2 emissions (i.e. 600kg CO2 per m2, maximum embodied carbon per project) on a project-by-project basis. Construction companies are struggling to reduce their embodied carbon - as it is not easy to find an alternative for concrete. Some of these companies have lost large contracts as they cannot provide a CO2 mitigation plan for construction. In addition, some public clients have set a carbon reduction plan and only accept construction companies that can meet their target. For example, Network Rail is aiming to reduce 8 million tonnes of CO2 emissions. Therefore, construction companies are striving to find novel methods in order to reduce their CO2 emissions.Concrete4Change Ltd. (C4C) is developing a technology capable of sequestering significant amounts of CO2 in concrete (up to 30%). The sequestration of CO2 results in the strength enhancement of concrete; hence, reducing the amount of cement required to produce equivalent-strength concrete. Both CO2 sequestration and cement reduction can contribute to the reduction of the concrete’s CO2 footprint – up to 60%. This technology has the potential to mitigate 2 billion tonnes of CO2e emissions, the equivalent of 4% of global CO2e emissions.