Research Article
Effectiveness of the Top-Down Nanotechnology in the Production of Ultrafine Cement (~220 nm)
Table 5
Chemical composition of Portland cement before and after milling.
| | Type of cement | Milling time (h) | Chemical composition | | CaO | SiO2 | Al2O3 | MgO | Fe2O3 | SO3 | Loss of Ig |
| | Ordinary Portland cement | 0 | 61.3 | 21.1 | 5.2 | 4.0 | 2.8 | 2.4 | 2.0 | | Ultrafine Portland cement | 6 | 61.3 | 21.1 | 5.2 | 4.0 | 2.8 | 2.4 | 2.0 |
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