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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