Properties

Number of samples

Maximum value

Minimum value

Average value

Chemical properties

Ignition loss

(wt%)

138

30.50

0.10

4.96

SiO₂

138

76.90

44.50

58.76

Al₂O₃

138

36.11

0.81

17.00

Fe₂O₃

138

35.10

0.89

12.84

CaO

138

11.70

0.0

3.58

F-CaO

2

1.51

1.00

0.76

MgO

138

2.97

0.08

1.05

Na₂O

80

2.62

0.0

0.47

K₂O

80

3.12

0.06

0.96

SO₃

128

1.50

0.0

0.30

Physical properties

True specific gravity

128

2.47

1.92

2.20

Bulk density (g/cm³)

Dense

90

1.471

0.693

1.170

Sparse

8

0.792

0.540

0.683

Specific surface area (cm²/g)

Blaine value

49

5720

1544

3212

N2-BET

39

224,000

18,000

96,600

Average grain diameter

mm

131

69.2

4.6

24.3