Predicting Strength Properties of High-Performance Concrete Modified with Natural Aggregates and Ferroslag under Varied Curing Conditions

Table 1

Chemical composition of silica fumes and fly ash.

Composition	Silica fumes	Fly ash
SiO2	93.5	59.3
Al2O3	0.27	34.6
Fe2O3	0.23	5.87
CaO	0.41	1.02
MgO	1.01	0.38
SO2	0.40	0.1
K2O	1.51	0.23
Na2O	0.79	1.54