The IPCC has only recently acknowledged that cement and concrete in the built environment constitute a significant carbon sink due to the process of carbonation. Much has been written about the factor determining carbonation, but no universally accepted indices would guide decision-making to build lower carbon structures.
Cement carbonation captures just a part of the CO2 emitted when heating the minerals used to produce the cement. It is a slow process which, in addition, may destroy the constructions made of reinforced concrete since carbonated concrete no more protects the reinforcing bards from oxidation.
For a recent paper, maybe look at Article Accelerated carbonation technology for enhanced treatment of...
. You may already know the attached paper.
Thank you, Claude-Alain, I shall review these references with great interest.
Frank
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