Sample
Name
Portlandite 96% Sigma-Aldrich 0C 1b CO2 5min
Substrate material
KBr window, 3mm thickness, 12mm diameter
Comments
dispersion of agglomerate grains on the substrate
Temperature
0.0 0.1
Time at T
15.0 1.0
Temperature max
22.0 2.0
Time at Tmax
10.0
Type
molecular gas
Fluids
Fluid temperature
0.0e+00 0.1
Fluid pressure
2.0 0.1
Time at T, P, pH
5.0 1.0
Title
Carbonation process of portlandite with 2 bar of mixed ambiant air/CO2 gas at 0°C during 5 min

Precursors

Materials

Produced sample

Materials
Processing steps
Step Chronology Date Type Process Changes
#1 on parent sample 2011-04-22 chemical 2 bar of CO2 gas mixed with ambiant air in contact with sample during 5 min at 0°C carbonation process, decrease of mass fraction of Portlandite, increase of mass fraction of Calcite and Aragonite. Reaction: CO2 + Ca(OH)2 => CaCO3 + H2O