Table 4 Deconvolution of 29Si MAS NMR results of uncarbonated and carbonated alkali activated slags.

From: Alteration in molecular structure of alkali activated slag with various water to binder ratios under accelerated carbonation

Samples

Site type

Unreacted GBFS (%)

Reaction products (%)

Q0

Q1a

Q1b

Q2 (1Al)

Q2b

Q2p

Q3 (1Al)

Q4 (4Al)

Q4 (3Al)

Q4 (2Al)

 − 75 ppm

 − 75 ppm

 − 77 ppm

 − 78 ppm

 − 81 ppm

 − 84 ppm

 − 85 ppm

 − 88 ppm

 − 86 ppm

 − 94 ppm

 − 102 ppm

AAS 035

54

6

3

10

18

5

2

2

–

–

–

AAS 045

56

5

3

9

16

5

4

2

–

–

–

AAS 055

55

6

4

10

13

6

5

1

–

–

–

C-AAS 035

39

–

–

–

–

–

–

–

9

41

12

C-AAS 045

36

–

–

–

–

–

–

–

7

44

13

C-AAS 055

36

–

–

–

–

–

–

–

7

44

13

  1. The estimated uncertainty in site percentages is ± 1%.
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