Table 7. Phase assemblage for the neat PC paste and after five months of hydration (by thermodynamic simulation with GEMs and by PXCT).
| Phase | Vol % (initial) with water | Vol % (GEMs) | Vol % (PXCT) |
|---|---|---|---|
| C3S | 33.0 | 5.4 | 18.8 |
| C2S | 10.2 | 6.3 | |
| C4AF | 6.6 | 3.8 | 3.8 |
| MgO | 0.6 | 0.4 | 0.7 |
| C3A† | 1.5 | 0.4 | — |
| Bass | 1.0 | — | — |
| CaCO3 | 1.1 | 0.9 | — |
| Fe–Al–Si–Hg | — | 4.0 | 6.4 |
| Portlandite | — | 20.1 | 17.8 |
| C-S-H gel | — | 35.3 | 41.1 |
| Hydrotalcite (2.01 g cm−3) | — | 1.3 | —‡ |
| AFt | — | 18.6 | 11.5 |
| Pore solution | 46.0 | 3.6 | 0 |
†
C3A correspond to Ca3Al2O6
‡
Hydrotalcite, if present, could not be independently segmented as its electron density and attenuation values are too close to those of C-S-H gel.