Skip to main content

Table 8 Recorded slumps of the samples using the second recipe (unit:mm)

From: Use of a 10.22 m diameter EPB shield: a case study in Beijing subway construction

BIR of the 6% bentonite slurry (%) 4.0 6.0 8.0
FIR of the foam liquid (7% of Concn and 10 of FER) (%)
 10 96 127 158
 15 108 142 174
 30 133 165 199
FIR of the foam liquid (7% of Concn and 12 of FER) (%)
 10 96 128 155
 15 107 140 170
 30 132 163 192
FIR of the foam liquid (7% of Concn and 15 of FER) (%)
 10 91 122 150
 15 96 128 160
 30 108 142 175
  1. The italics in the tables present the results with the most appropriate FER of the foam liquid