Table 1 Chemical composition of the hydrotalcite, bentonite, silica fume and CEM III/C components used to produce the cementitious grout

From: Mineralogical and geochemical composition of a cementitious grout and its evolution during interaction with water

Element

Component

 

Hydrotalcite

Bentonite

Silica fume

CEM III/C

Major elements

    

SiO2 (wt.%)

<Q.L.

47.5

95.3

30.5

Al2O3 (wt.%)

18.3

17.0

<Q.L.

10.1

MgO (wt.%)

36.8

3.6

<Q.L.

5.6

CaO (wt.%)

<Q.L.

3.2

0.9

42.2

LOI1025 (wt.%)

43.5

18.8

2.2

2.3

Trace elements

    

Na2O (wt.%)

1.7

2.70

<Q.L.

0.60

K2O (wt.%)

<Q.L.

0.62

0.36

0.38

MnO (wt.%)

<Q.L.

0.04

<Q.L.

0.25

P2O5 (wt.%)

<Q.L.

0.12

0.07

<Q.L.

TiO2 (wt.%)

<Q.L.

0.63

<Q.L.

0.46

Fe

    

Total Fe2O (wt.%)

<Q.L.

4.30

0.16

0.77

Fe(II)/Fetot (at.%)

<Q.L.

28

<Q.L.

40

Carbon

    

Ctot (w.%)

2.20

0.79

1.45

0.57

Corg (w.%)

<Q.L.

<Q.L.

1.45

<Q.L.

Sulfur

    

S(-II) (wt.%)

<Q.L.

0.10

<Q.L.

0.80

S(VI) (wt.%)

<Q. L.

<Q. L.

<Q. L.

2.70

S(0) (wt.%)

<Q.L.

0.09

0.07

0.07

  1. LOI1025, Fetot, Ctot, and Corg respectively stand for weight loss upon heating the sample at 1025 °C, total Fe, total C, and organic C. QLSiO2, Al2O3, MgO, Na2O, S(VI) = 0.2 wt.%, QLCaO, S(-II), Ctot, Corg = 0.1 wt.%, QLK2O, P2O5, TiO2, S(0) = 0.05 wt.%, QLMnO = 0.02 wt.%, QLFeII = 0.16 wt.%, where QLxx stands for “quantification limit of element XX”.
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