- Database
- Experimentalists
- Date
- 2011-05-12
- Provider
- IPAG
- Previous sample
- Portlandite 96% Sigma-Aldrich -10C 2b CO2 180min
- Parent sample
- Portlandite 96% Sigma-Aldrich -10C vacuum
- Sample changes
- Formation of carbonates and reduction of portlandite proportion
- 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
- 255.0 $\pm$ 1.0 $min$
- Temperature max
- -10.0 $\pm$ 0.1 $^{\circ}C$
- Time at Tmax
- 255.0 $min$
- Type
- molecular gas
- Fluids
-
- CO2 gas N48 - Air Liquide 100.0 $\pm$ 0.1 %
- Fluid temperature
- -1.0e+01 $\pm$ 0.1 $^{\circ}C$
- Fluid pressure
- 2.0 $\pm$ 0.1 $bar$
- Time at T, P, pH
- 245.0 $\pm$ 1.0 $min$
- Number
- 1
- Layers
- Title
- Carbonation process of portlandite with 2 bar of CO2 gas at -10°C during 245 min
- Samples
- 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 245 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