From: Combined Use of Sewage Sludge Ash and Silica Fume in Concrete
Mix design no
SSA (%)
Excess water
Slump (cm)
1
0
21.08
2
5
20.5
3
10
20.95
4
15
19.25
20
23
21.74
6
30
28
21.26
7
50
38
19.57