Effects of Corn Cob Ash as Partial Replacement of Cement for Stabilization of an Expansive Clay

Table 1

Oxide content of ordinary portland cement.

Oxides	CaO	SiO2	Al2O3	Fe2O3	SO2	MgO	Na2O	K2O
Ranges (%)	60–70	17–25	3–8	0.5–6	1–3	0.1–4	0.5–1.3	0.5–1.3