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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