Sample
Name
Portlandite 96% Sigma-Aldrich 25C 0,1b CO2 370min
Substrate material
KBr window, 3mm thickness, 12mm diameter
Comments
dispersion of agglomerate grains on the substrate
Temperature
25.0 $\pm$ 0.1 $C$
Time at T
380.0 $\pm$ 1.0 $min$
Temperature max
25.0 $\pm$ 0.1 $C$
Time at Tmax
380.0 $min$
Pressure
0.1 $\pm$ 0.02 $bar$
Pressure max
1.0 $bar$
Type
molecular gas
Fluids
Fluid temperature
25.0 $\pm$ 0.1 $C$
Fluid pressure
0.1 $\pm$ 0.02 $bar$
Time at T, P, pH
370.0 $\pm$ 1.0 $min$
Title
Carbonation process of portlandite with 0.1 bar of CO2 gas at 25°C during 370 min

Precursors

Materials

Produced sample

Materials
Processing steps
Step Chronology Date Type Process Changes
#1 on parent sample 2011-05-27 chemical 0,1 bar of CO2 gas in contact with sample during 370 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