An equilibrium phase diagram has been calculated for the CaO-A1203-CaSO4-K20-H20 system at 25°C for several KOH concentrations. These KOH concentrations were chosen to relate to cement pore fluid compositions and published experimental data. In addition to the hydrates found in the CaO-A1203-CaSO4-H
Investigation of phase transitions in the CaSO4(s)H2O(g) system by chromatographic methods
✍ Scribed by L.G. Berezkina; V.I. Souhodolova; S.V. Melnikova; E.A. Saricheva
- Publisher
- Elsevier Science
- Year
- 1990
- Tongue
- English
- Weight
- 358 KB
- Volume
- 520
- Category
- Article
- ISSN
- 1873-3778
No coin nor oath required. For personal study only.
📜 SIMILAR VOLUMES
The CaO-A1203-CaSO4-H20 system has been investigated at 50°C and 85°C, by calculations of the equilibrium solubility surfaces of AH3, C3AH6, CH, ettringite, monosulphoaluminate and gypsum. The results indicate that monosulphoaluminate becomes a stable phase at elevated temperature. Since ettringite
The CaO-AI203-CaSO4-H20 system at 25°C has been investigatedby calcula~ons on the equilibrium solubility surfaces of AH 3, C3AH6, CH, C6AS3H x, C4ASH x and gypsum. The results are in good agreement with the previous experimental data and make it possible to define the hydrates in equilibrium with aq
The CaO-rich portions of the systems CaO-A~203-SiO2-K2SO,, CaO-AC203-K2SO,-CaSO,, CaO-A~203-SiO2-K2SO,-CaSO, and CaO-A~203-Fe203-CaSO,-K2SO, have been studied experimentally. Schemes are presented showing phase assemblages compatible at subsolidus temperatures. Melting commences at about 825°C in as