Abstract

The manufacturing of cement is associated with large amount of CO2 emissions. Carbon capture and storage (CCS) or carbon sequestration is identified as one of the solutions to mitigate high level of CO2. CO2 sequestration is described as long-term storage of atmospheric CO2 in stable forms to mitigate global warming, and climate change efforts are being made to sequester CO2 in cement-based products. Mineral carbonation of metal oxides present in cement can allow sequestering of CO2 in cement in the form of stable silica gel and carbonates. Sequestration of CO2 in cement and cement-based products such as mortar, paste, and concrete is accomplished by accelerated carbonation curing (ACC). This chapter discusses in detail possibility of CO2 sequestration by cement-based materials through accelerated carbonation curing. Reaction mechanisms, laboratory processes, and resulting performance of carbonation curing have been comprehensively discussed and reviewed based on available literature. The chapter also discusses challenges faced by ACC for industrial implementation and future scope of research on carbonation curing.

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