. 2018 Jun 27;11(7):1093. doi: 10.3390/ma11071093

Table 1.

Chemical composition and alkali content in cement clinker CEM I 42.5 R, %.

Compound	CaO	SiO₂	Al₂O₃	Fe₂O₃	MgO	Na₂O	K₂O	Na₂O_eq
Content	64.64	20.22	4.37	3.33	1.20	0.26	0.50	0.59