Table 9. Phase assemblage for the PC–FA blend paste and after five months of hydration (by thermodynamic simulation with GEMs assuming 30% reaction degree of the FA, and by PXCT).
| Phase | Vol % (initial) with water | Vol % (GEMs) | Vol % (PXCT) |
|---|---|---|---|
| C3S | 21.8 | 1.5 | 9.9 |
| C2S | 6.7 | 2.4 | |
| C4AF | 4.3 | 1.2 | — |
| MgO | 0.4 | 0.2 | 0.7 |
| C3A | 1.0 | — | — |
| Bass | 0.7 | — | — |
| CaCO3 | 0.7 | — | — |
| FA | 17.9 | 14.2 | 16.9 |
| Fe–Al–Si–Hg | — | 8.6 | —† |
| Portlandite | — | 5.8 | 11.1 |
| Monocarbonate (2.22 g cm−3) | — | 4.1 | — |
| C-S-H | — | 35.8 | 48.0 |
| Hydrotalcite | — | 1.5 | |
| AFt | — | 13.1 | |
| Pore solution | 46.4 | 11.7 | 13.4 |
†
Fe–Al–Si–Hg could not be independently segmented as its electron density and attenuation values are too close to those of (unreacted) FA.