Fig. 9: Effect of the CO₂ partial pressure on the alteration of the cementitious grout interacting with double distilled water at ~25 °C.

Green, blue and red lines and symbols refers to experiments conducted by using double distilled water equilibrated with atmospheric partial pressure, with a 9% CO₂/91% N₂ gas mixture, and with a 30% CO₂/70% N₂ mixture.