Cement chemist notation
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Cement chemist notation (CCN) was developed to simplify the formulas cement chemists use on a daily basis. It is a sort of "short hand" way of writing the chemical formula of oxides of calcium, silicon, and various metals. Below is a list of all of the abbreviations used:
| CCN | Actual Formula |
|---|---|
| C | CaO |
| S | SiO2 |
| A | Al2O3 |
| F | Fe2O3 |
| T | TiO2 |
| M | MgO |
| K | K2O |
| N | Na2O |
| H | H2O |
| [\bar \mathrm] | CO3 |
| [\bar \mathrm] | SO3 |
These oxides are used to build more complex molecules such as:
| C3S | 3 CaO • SiO2 |
| C2S | 2 CaO • SiO2 |
| C3A | 3 CaO • Al2O3 |
| C4AF | 4 CaO • Al2O3•Fe2O3 |
Hydration products are more complicated, because many of the products have nearly the same formula and some are solid-solutions with overlapping formula. Some examples are below:
| CSH | 2(CaO) • SiO2 • 0.9-1.25(H2O) and/or CaO • SiO2 • 1.1(H2O) and/or 0.8-1.5(CaO) • SiO2 • 1.0-2.5(H2O) and more! |
| CAH | This is even more complex than CSH |
| Aft | C3AS(bar)3H30-32 |
| Afm | C2AS(bar)H12 |
External links
- [Cement and Concrete Glossary]
- [www.cimento.org > The world of the cement] (Portuguese-Brasil)
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