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Cement chemist notation



Cement chemist notation (CCN) was developed to simplify the formulas which 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:

CCNActual Formula
CCaO
SSiO2
AAl2O3
FFe2O3
TTiO2
MMgO
KK2O
NNa2O
HH2O
\bar \mathrm{C}CO2
\bar \mathrm{S}SO3

Additional recommended knowledge

These oxides are used to build more complex molecules such as:

C3S3 CaO • SiO2Tricalcium silicate
C2S2 CaO • SiO2Dicalcium silicate
C3A3 CaO • Al2O3Tricalcium aluminate
C4AF4 CaO • Al2O3•Fe2O3Tetracalcium alumino ferrite

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:

CSH2(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!
CAHThis is even more complex than CSH
AFtC3A\bar \mathrm{S}3H30-32
AFmC2A\bar \mathrm{S}H12

References

  • Locher, Friedrich W. (2006). Cement: Principles of production and use. Duesseldorf, Germany: Verlag Bau + Technik GmbH. ISBN 3-7640-0420-7. 
  • Mindess, S.; Young, J.F. (1981). Concrete. Englewood, NJ, USA: Prentice-Hall. ISBN 0-1316-7106-5. 
 
This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Cement_chemist_notation". A list of authors is available in Wikipedia.
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