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Table 1 Oxide composition (wt%) of the raw materials, X-ray fluorescence (XRF) analysis of F.A., GGBFS, R.B., and OPC

From: Enhancing corrosion resistance of RC pipes using geopolymer mixes when subjected to aggressive environment

Items

FA

GGBFS

RB

OPC

Chemical composition in %

SiO2

56.2

36.59

73.05

18.5

Al2O3

25.8

10.01

13.41

5.24

Fe2O3

6.8

1.48

6.35

5.9

Cao

3.67

33.07

1.35

60.9

MgO

1.76

6.43

1.46

1.1

SO3

0.47

3.52

0.74

1.5

K2O

0.01

0.74

0.91

-

Na2O

2.06

1.39

1.62

-

Cl

0.52

0.05

0.18

0.002

L.O.L

6

0

0.95

0.8