Table 1.
Group No. | Surface treatment | Mean (Mpa) |
---|---|---|
I | Sandblast + surface grinding | 23.6 |
II | Sandblast + surface grinding + sandblast | 30.7 |
III | Sandblast + surface grinding + sandblast + de-gas | 37.9 |
IV | Sandblast + surface grinding + sandblast +de-gas + sandblast | 36.0 |
V | Sandblast + surface grinding + sandblast + de-gas + surface grinding + sandblast | 27.5 |
VI | Sandblast + surface grinding + sandblast + de-gas + surface grinding + sandblast + de-gas | 28.4 |
VII | Sandblast + surface grinding + sandblast + steam clean + de-gas | 20.77 |