Abstract
The phase diagram of the CaO-Al2O3-SiO2-CaSO4-CaCO3-H2O system relevant to cement has been calculated at 25degreesC and 1 bar pressure. It is composed of 331 stable phase assemblages in equilibrium with the aqueous phase and contains 30 invariant points with 15 solids. Thaumasite appears to be a stable phase with a wide stability domain. Compared to ettringite, thaumasite is stable to lower pH and generally demands higher sulphate concentrations to be stable.
| Original language | English |
|---|---|
| Pages (from-to) | 69-76 |
| Number of pages | 8 |
| Journal | Advances in Cement Research |
| Volume | 16 |
| Publication status | Published - 2004 |