Table 3.

Chemical composition of used cement (% mass).

SiO2	CaO	Al2O3	Fe2O3	MgO	SO3	Na2O	P2O5	Cl	TiO2	LOI*
21.52	61.89	3.8	1.88	2.26	2.81	0.55	0.21	0.14	0.51	3.11

* LOI: Loss on Ignition at 1000 °C.