Table 2 Chemical compositions of raw materials used in the study (wt%).

Al₂O₃

4.19

14.55

23.66

1.30

SiO₂

17.76

29.98

49.83

92.00

Fe₂O₃

3.24

0.50

9.03

2.40

CaO

67.16

45.92

8.77

–

MgO

2.26

4.90

1.83

0.40

TiO₂

0.23

0.73

1.62

–

K₂O

1.21

0.60

1.97

1.20

Na₂O

0.09

0,21

0.72

0.10

SO₃

2.99

–

0.96

–

Loss on ignition

0.84

–

2.88

–