Research Article
Case Study: In Situ Experimental Investigation on Overburden Consolidation Grouting for Columnar Jointed Basalt Dam Foundation
Table 5
Properties of the ordinary cement slurry and the wet-ground cement slurry under normal pressure and high pressure.
| Property | Pressure | Variety of cement | 3 : 1 | 2 : 1 | 1 : 1 | 0.8 : 1 | 0.5 : 1 |
| 7 d compressive strength (MPa) | Normal | Portland cement | 3.25 | 4.10 | 5.40 | 7.63 | 11.60 | Wet-ground fine cement | 4.21 | 7.3 | 12.3 | 14.5 | 15.4 | High | Portland cement | 50.4 | 70.8 | 73.5 | 75.5 | 66.2 | Wet-ground fine cement | 70.8 | 94.5 | 95.1 | 93.2 | 69.3 |
| 28 d compressive strength (MPa) | Normal | Portland cement | 11.3 | 15.1 | 15.9 | 16.8 | 22.6 | Wet-ground fine cement | 12.3 | 17.4 | 22.3 | 23.7 | 28.6 | High | Portland cement | 83.4 | 99.6 | 102.2 | 101.6 | 86.5 | Wet-ground fine cement | 105.8 | 108.7 | 111.6 | 109.7 | 95.3 |
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