The world is facing two major challenges: the transition to a circular economy and the high concentration of CO2 in the atmosphere. This project addresses both challenges simultaneously. Initially, industrial waste products from metal production, mining, and energy generation will be used to capture CO2. By optimizing the CO2 capture reactions, the project aims to maximize the amount of CO2 sequestered per unit of industrial waste product. Subsequently, the carbonated byproducts from the CO2 capture process – the carbonated industrial waste products – will be studied for their potential to be used as supplementary cementitious materials (SCM) to partially replace Ordinary Portland Cement (OPC). The goal will be to maximize the percentage of OPC replaced by carbonated SCM, resulting in a significant reduction in cement-related CO2 emissions (almost 0.8 Mt-CO2/Mt-OPC) along with reduced exploitation.