Number of groups | number | Maximum pulling force/KN | Average maximum pulling force/KN |
A) group (Ordinary cement slurry) | 1# | 14.32 | 14.28 |
2# | 13.61 | ||
3# | 14.90 | ||
B) group (3% Expansion agent dosage self stressing slurry) | 4# | 19.35 | 18.37 |
5# | 17.29 | ||
6# | 18.55 | ||
C) group (5% Expansion agent dosage self stressing slurry) | 7# | 30.20 | 30.82 |
8# | 31.44 | ||
9# | 30.82 | ||
D) group (7% Expansion agent dosage self stressing slurry) | 10# | 39.25 | 40.98 |
11# | 41.58 | ||
12# | 42.12 | ||
E) group (9% Expansion agent dosage self stressing slurry) | 13# | 22.51 | 22.24 |
14# | 23.48 | ||
15# | 20.73 |