Soil Improvement of EPBS Construction in High Water Pressure and High Permeability Sand Stratum

<div>Effect of sodium bentonite-CMC mixed mud and different concentrations of polyacrylamide solution on slump improvement. (a) 3% concentration of polyacrylamide. (b) 4% concentration of polyacrylamide.</div>

Advances in Civil Engineering

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Figure 9

Figure 9: Soil Improvement of EPBS Construction in High Water Pressure and High Permeability Sand Stratum 