Chloride Ion Corrosion Pattern and Mathematical Model for C60 High-Strength Concrete after Freeze-Thawing Cycles

Table 1

Composition of cement.

Materials	SiO2 (%)	Al2O3 (%)	Fe2O3 (%)	CaO (%)	MgO	Na2O (%)	K2O (%)	SO3 (%)
Cement	21.6	4.13	4.57	64.47	1.06%	0.11	0.56	1.74
Fly ash	55.6	25.8	6.90	8.70	1.80%	0.30	0.10	0.60