- Database
- Experimentalists
- Date
- 2011-05-18
- Provider
- IPAG
- Previous sample
- Portlandite 96% Sigma-Aldrich 0C 2b CO2 ref
- Parent sample
- Portlandite 96% Sigma-Aldrich 0C 2b CO2 ref
- Sample changes
- Adsorption of water and condensation of ice on the minerals, some loss of adsorbed water and ice before carbonation process and reduction of portlandite proportion
- Substrate material
- KBr window, 3mm thickness, 12mm diameter
- Comments
- dispersion of agglomerate grains on the substrate
- Temperature
- 0.0 $\pm$ 0.1 $^{\circ}C$
- Time at T
- 10.0 $\pm$ 5.0 $min$
- Temperature max
- 0.0 $\pm$ 0.1 $^{\circ}C$
- Time at Tmax
- 10.0 $min$
- Type
- vacuum
- Fluids
-
- Primary vacuum - ~1e-2 mbar 100.0 $\pm$ 0.1 %
- Fluid temperature
- 0.0e+00 $\pm$ 0.1 $^{\circ}C$
- Fluid pressure
- 0.0e+00 $bar$
- Time at T, P, pH
- 10.0 $\pm$ 1.0 $min$
- Number
- 1
- Layers
- Title
- Freezing and pumping ambiant air in an environmental chamber for carbonation process on portlandite
- Materials
- Materials
- Processing steps
-
Step Chronology Date Type Process Changes #1 on parent sample 2011-05-18 thermal cooling of the sample to -60°C adsorption of water and condensation of ice on the minerals #2 on parent sample 2011-05-18 fluid physical removal of air in the chamber: vacuum 1e-5 mbar during 10 min some loss of adsorbed water and ice #3 on parent sample 2011-05-18 thermal heating of the sample to 0°C (temperature for the experimental conditions) loss of part of adsorbed water and ice