Carbon dioxide sequestration in cementitious materials: A review of techniques, material performance, and environmental impact.

The release of carbon dioxide (CO 2) into the earth's atmosphere is a substantial global environmental concern that arises from the processes of industrialization and urbanization. The increase in atmospheric CO 2 concentrations has resulted in the phenomenon of global warming and subsequent alterations in climate patterns. Accelerated CO 2 sequestration in cementitious materials is currently the subject of extensive research as a highly efficacious approach to mitigating the carbon footprint of the concrete industry. The sequestration procedure entails the transformation of gaseous CO 2 into carbonate minerals. The review presented in this paper outlines the most recent carbonation (i.e., CO 2 sequestration) techniques, such as mineral carbonation, accelerated CO 2 curing (ACC), pre-carbonation, and carbonation mixing, that have been recently explored. The potential of mineral carbonation of industrial wastes and the advantages of their incorporation in the concrete matrix is investigated. Carbonation technologies and their effect on the performance of cementitious composites are reported. Information on life cycle assessment are also included to evaluate the environmental impact associated with the production of carbonated materials. Various commercialized CO 2 utilization technologies in construction sector, such as CarbonCure, Solidia, Carbstone, Calera, and Carbon8 are reviewed. Moreover, this review offers a thorough insight into the carbonation technologies, evaluating their advantages, limitations, and the existing gaps in research. • Various carbonation techniques for CO 2 incorporation in concrete comprehensively reviewed. • Limitations and research gaps of carbonation technologies are discussed. • Potentials uses of CO 2 -mineralized industrial wastes in the concrete discussed. • Commercial CO 2 utilization technologies in the construction sector identified. • LCA of carbonated materials to ensure sustainable production practices presented. [ABSTRACT FROM AUTHOR]