Compressive strength reactivity of pozzolans in the Foresight project
Pozzolan
Type
Addition rate
(% v/v of NHL)
Reactivity (Factor for equivalent weight of NHL 3.5)
@ 28 days @ 56 days @ 91 days @ 182 days
Metakaolin 10
20
30
10
10
13
10
10
10
7
8
9
8
8
9
Yellow brick
dust (fine)
10
20
30
-1
0
0
0
1
1
0
0
1
0
1
1
Red brick
dust (fine)
10
20
30
-1
0
0
0
0
0
0
0
0
0
1
1
Red brick
dust (medium)
10
20
30
-1
0
0
0
0
0
0
0
0
0
1
1
Red brick
dust (coarse)
10
20
30
-1
-1
0
0
0
0
0
0
0
0
0
0
Granulated
blastfurnace
slag
10
20
30
7
8
7
6
6
6
4
5
4
4
4
4
Fly ash 10
20
30
-1
0
0
1
1
2
1
1
2
2
3
3
Dutch trass 10
20
30
-1
0
1
0
1
1
0
1
1
0
1
1
Italian
pozzolana
(coarse)
10
20
30
-1
-1
0
-1
0
1
0
1
1
0
1
2
Italian
Pozzolana
(ground)
10
20
30
0
0
0
0
1
2
0
1
2
0
1
2
Microsilica 10
20
30
8
10
10
8
8
8
6
7
6
7
7
6

Technical Report by Paul Livesey
Technical Manager of Castle Cement, a division of Heidelberg Cement Group


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