Table 4 CO2 inflow and outflow during the DAC process for different groups.

From: Hydration behaviors, workability, and strength variations in direct aqueous carbonation (DAC) of Portland cement paste

Group

Inflow (m3)

Release (m3)

Status of CO2 Absorption

0.5 − 0.1

0.002

0

Complete absorption

0.55 − 0.1

0.002

0

Complete absorption

0.6 − 0.1

0.002

0

Complete absorption

0.5-1

0.020

0.007

About 33% unabsorbed

0.55-1

0.020

0.003

About 15% unabsorbed

0.6-1

0.020

0

Complete absorption