Table 5 Measured slumps of the samples with different FIRs and FERs
From: Use of a 10.22 m diameter EPB shield: a case study in Beijing subway construction
Concn of the foam liquid (%) | Mass of the foam liquid (kg) | Water (kg) | FER | FIR (%) | Density (g/cm3) | Slump (mm) |
|---|---|---|---|---|---|---|
5 | 50 | 950 | 10 | 15 | 1.96 | 82 |
20 | 1.92 | 85 | ||||
12 | 15 | 1.93 | 84 | |||
20 | 1.87 | 87 | ||||
15 | 15 | 1.89 | 72 | |||
20 | 1.81 | 72 |