Research Article
Soil Improvement of EPBS Construction in High Water Pressure and High Permeability Sand Stratum
Table 4
Sodium bentonite-CMC mixed mud mixing ratio grouping.
| | Mixed mud proportioning number | Bentonite concentration (%) | CMC quality ratio (%) | Mud viscosity (s) |
| | A | 11 | 0.25 | 85.3 | | B | 10 | 0.5 | 97.8 | | C | 9 | 0.75 | 86 | | D | 8 | 1 | 79.4 |
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