Table 4 Dilling resistance and consolidation effectiveness index (\(R_{c}\)) of the sandstone and clay brick samples before and after consolidation.
Consolidant types and dosages | 2 mL PS | 4 mL PS | 2 mL B-72 | 4 mL B-72 | 2 mL TEOS | 4 mL TEOS | |||
|---|---|---|---|---|---|---|---|---|---|
Sandstone samples | Consolidation depth (mm) | 4.1 | 5.4 | 3.6 | 5.4 | 3.0 | 2.9 | ||
Drilling resistance (N) | Unconsolidated | Mean | 20.15 | 22.74 | 16.22 | 19.54 | 24.63 | 24.30 | |
Standard deviation | 0.88 | 0.85 | 1.28 | 1.18 | 0.97 | 0.92 | |||
Consolidated | Mean | 22.67 | 29.59 | 21.64 | 25.90 | 26.95 | 22.20 | ||
Standard deviation | 0.44 | 1.09 | 1.17 | 0.38 | 0.85 | 0.87 | |||
\(R_{c}\)(%) |  |  | 12.51 | 30.12 | 33.42 | 32.54 | 9.42 | –8.64 | |
Clay brick samples | Consolidation depth (mm) | 1.8 | 3.1 | 1.8 | 1.8 | 2.0 | 2.1 | ||
Drilling resistance (N) | Unconsolidated | Mean | 5.30 | 5.49 | 4.20 | 4.20 | 3.56 | 3.58 | |
Standard deviation | 0.47 | 0.63 | 0.51 | 0.51 | 0.23 | 0.22 | |||
Consolidated | Mean | 6.13 | 7.32 | 4.80 | 6.10 | 3.78 | 3.18 | ||
Standard deviation | 0.67 | 1.01 | 0.56 | 0.37 | 0.45 | 0.20 | |||
\(R_{c}\)(%) |  |  | 15.66 | 33.33 | 14.29 | 45.24 | 6.18 | –11.17 | |
