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 K20
N Na2O
H H2O
S(bar) CaSO4
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 Believe it or not this is even more complex that CSH and it cannot be explained here without infringing on copyrighted material.
Aft C3AS(bar)3H30-32
Afm C2AS(bar)H12