Joint | Exposed time (Hrs) | MMF (˚C.H) | Joint bonding strength with different treatment method (MPa.) | |||||
By grout | By mortar | Without treatment | ||||||
Average MPa | % by parent RCC | Average MPa | % by parent RCC | Average MPa | % by parent RCC | |||
7/8 | 60 | 2064.9 | 0.9* | 65.7 | 0.76* | 55.5 | 0.50 | 36.5 |
6/7 | 48 | 1866.8 | 1.02* | 74.5 | 0.80* | 58.4 | 0.36 | 26.3 |
5/6 | 36 | 1330.1 | 1.10 | 60.3 | 0.73 | 53.3 | 0.44 | 40.1 |
4/5 | 22 | 757.1 | 1.02 | 58.6 | 1.25 | 71.8 | 0.64 | 36.8 |
3/4 | 16 | 589.7 | 1.34 | 77.0 | 1.28 | 72.0 | 1.04 | 59.8 |
2/3 | 10 | 300.1 | 1.47 | 84.5 | 1.33 | 75.0 | 1.28 | 73.6 |
1/2 | 4 | 178.5 | 1.43 | 82.2 | 1.55 | 88.0 | 1.44 | 82.8 |