Sample
Name
Portlandite 96% Sigma-Aldrich 25C 2b CO2 4min
Substrate material
KBr window, 3mm thickness, 12mm diameter
Comments
dispersion of agglomerate grains on the substrate
Temperature
25.0 $\pm$ 0.1 $^{\circ}C$
Time at T
14.0 $\pm$ 1.0 $min$
Temperature max
25.0 $\pm$ 0.1 $^{\circ}C$
Time at Tmax
14.0 $min$
Type
molecular gas
Fluids
Fluid temperature
25.0 $\pm$ 0.1 $^{\circ}C$
Fluid pressure
2.0 $\pm$ 0.1 $bar$
Time at T, P, pH
4.0 $\pm$ 1.0 $min$
Title
Carbonation process of portlandite with 2 bar of CO2 gas at 25°C during 4 min

Precursors

Materials

Produced sample

Materials
Processing steps
Step Chronology Date Type Process Changes
#1 on parent sample 2011-05-10 chemical 2 bar of CO2 gas in contact with sample during 4 min at 25°C carbonation process, decrease of mass fraction of Portlandite, increase of mass fraction of Calcite and Aragonite. Reaction: CO2 + Ca(OH)2 => CaCO3 + H2O