Chemical Name

Chemical Formula

Shorthand Notation

Percent by Weight

Tricalcium Silicate

3CaO∙SiO₂

C₃S

55 to 70

Dicalcium Silicate

2CaO∙SiO₂

C₂S

10 to 25

Tricalcium Aluminate

3CaO∙Al₂O₃

C₃A

5 to 13

Tetracalcium Aluminoferrite

4CaO∙Al₂O₃∙Fe₂O₃

C₄AF

1 to 15

Gypsum

Chemical Formula

CSH₂

≤3.5