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