CO2 Diffusion and Carbonation in OPC/γ-2CaO·SiO2 Composite

Gamma dicalcium silicate (γ-2CaO∙SiO2, abbreviated as γ-C2S) is considered a potential candidate construction material owing to its high carbonation reactivity and consequent CO2 absorption. This study investigates the diffusion of CO2, physical process, into hardened cement paste resulting carbonation, chemical process. diffuses from region concentration one lower concentration, which inner core cement. aimed examine whether ordinary Portland (OPC)/γ-C2S composite followed conventional laws diffusion. We also studied CaCO3 determine if products were formed in pores examined capture CO2. The specimens prepared subjected chambers for varying periods. results showed that deposited affected rate mortars pastes, densification such bodies decreased diffusion, leading shutdown pastes made OPC γ-C2S follows Fick’s second law, wherein there change diffusing at particular distance with time.