| Added Nickel ions (ppm) |
No. of days |
% change in compressive strength in comparison of control |
| |
3 |
7 |
28 |
60 |
90 |
180 |
360 |
3 |
7 |
28 |
60 |
90 |
180 |
360 |
| Control |
323.4 |
436 |
486 |
570 |
570 |
620 |
620 |
|
|
|
|
|
|
|
| 500 |
305 |
426 |
445 |
580 |
580 |
600.6 |
600 |
94.3 |
97.7 |
91.5 |
101.7 |
101.7 |
97.8 |
96.7 |
| 1000 |
320 |
425 |
426 |
590 |
600 |
632 |
660 |
98.9 |
97.5 |
87.6 |
103.5 |
105.2 |
101.9 |
106.4 |
|
