▎ 摘　　要

Graphene oxide is emerging as a promising nanomaterial owing to its unique property of being a strong and flexible material. This work examines the potential use of graphene oxide (GO) for CO2 sequestration in cementitious-based materials in addition to mechanical properties. The effect of oxidized graphene surface on the hydration mechanism of cement paste and carbonate miner-alization was investigated. Experimental results show that the application of GO at optimum amount offers 40% improvement in compressive strength at an early age. Accelerated carbon curing of GO-cement matrix was performed to evaluate CO2 sequestration through thermogra-vimetric analysis and results revealed that adding a low concentration of GO (i.e. 0.05%) improved CO2 uptake by 30% in the cementitious system. Further, physical adsorption of CO2 molecules and alteration in C-S-H was confirmed by the FTIR study. This finding suggests that the application of GO, not only improved the mechanical properties but it significantly enhanced the CO2 sequestration in cementitious systems.