Chemical Composition,%

Sample

CEM I (52.5N)

Cement kiln dust (CKD)

Silica fume* (SF)

SiO2

20.48

12.27

93.79

Al2O3

15.06

2.27

0.36

Fe2O3

5.23

3.70

1.48

CaO

3.96

45.28

0.33

MgO

3.40

1.49

0.41

SO3

2.12

2.59

0.19

Na2O

62.72

0.31

0.43

K2O

1.67

5.68

0.62

Cl

3.20

8.06

0.05

L.O.I

0.33

17.38

1.63