- Database
- Experimentalists
- Date
- 2011-05-27
- Provider
- IPAG
- Substrate material
- KBr window, 3mm thickness, 12mm diameter
- Comments
- dispersion of agglomerate grains on the substrate
- Temperature
- 25.0 $\pm$ 0.1 $^{\circ}C$
- Time at T
- 10.0 $\pm$ 5.0 $min$
- Temperature max
- 25.0 $\pm$ 2.0 $^{\circ}C$
- Time at Tmax
- 10.0 $min$
- Type
- vacuum
- Fluids
-
- Primary vacuum - ~1e-2 mbar 100.0 $\pm$ 0.1 %
- Fluid temperature
- 25.0 $\pm$ 0.1 $^{\circ}C$
- Fluid pressure
- 0.0e+00 $\pm$ 1.0e-04 $bar$
- Time at T, P, pH
- 10.0 $\pm$ 1.0 $min$
- Number
- 1
- Layers
- Title
- Heating the sample at 25°C after freezing during pumping air in an environmental cell
- Matters
- Materials
- Processing steps
-
Step Chronology Date Type Process Changes #1 during layer formation 2011-05-27 layer formation slightly compressed grains dispersed agglomerate of grains placed in the cell under ambient temperature and air. Manual compression #2 after sample formation 2011-05-27 chemical kept 10 min under ambient temperature and air (H2O and CO2) The carbonation process started during and after sample preparation under ambiant air. Slight reaction of CO2 with Portlandite #3 on parent sample 2011-05-27 thermal cooling of the sample to -60°C adsorption of water and condensation of ice on the minerals #4 on parent sample 2011-05-27 fluid physical removal of air in the chamber: vacuum 1e-5 mbar during 10 min some loss of adsorbed water and ice #5 on parent sample 2011-05-24 thermal heating of the sample to 25°C melting of ice and some loss of adsorbed and liquid water