A new direction toward carbon utilization in construction industry

Aqueous CO2 curing technology does not need a huge chamber supplying gaseous CO2 for the early carbonation to enhance the performance of cement-based materials. CO2 is dissolved in an alkaline solution beforehand, and then blast-furnace slag mortar can be cured in the CO2 solvent. The resultant carbonation in early age improves the strength of the mortar samples together with a high CO2 uptake. In addition, the technology is easily augmented on the existing carbon capture process.

Han, S. H., Jun, Y., and Kim, J. H. (2022), The use of alkaline CO2 solvent for the CO2 curing of blast-furnace slag mortar, Constr. Build. Mater. 342: 127977, 2022, https://doi.org/10.1016/j.conbuildmat.2022.127977

22CBM aqueous CO2 curing.pdf