Sample
Name
Portlandite 96% Sigma-Aldrich -10C 2b CO2 11min
Substrate material
KBr window, 3mm thickness, 12mm diameter
Comments
dispersion of agglomerate grains on the substrate
Temperature
-10.0 $\pm$ 0.1 $^{\circ}C$
Time at T
21.0 $\pm$ 1.0 $min$
Temperature max
-10.0 $\pm$ 0.1 $^{\circ}C$
Time at Tmax
21.0 $min$
Type
molecular gas
Fluids
Fluid temperature
-1.0e+01 $\pm$ 0.1 $^{\circ}C$
Fluid pressure
2.0 $\pm$ 0.1 $bar$
Time at T, P, pH
11.0 $\pm$ 1.0 $min$
Title
Carbonation process of portlandite with 2 bar of CO2 gas at -10°C during 11 min

Precursors

Samples

Produced sample

Materials
Processing steps
Step Chronology Date Type Process Changes
#1 on parent sample 2011-05-12 chemical 2 bar of CO2 gas in contact with sample during 11 min at -10°C carbonation process, decrease of mass fraction of Portlandite, increase of mass fraction of Calcite and Aragonite. Reaction: CO2 + Ca(OH)2 => CaCO3 + H2O