Research Article
Ground Subsidence Triggered by the Overexploitation of Aquifers Affecting Urban Sites: The Case of Athens Coastal Zone along Faliro Bay (Greece)
Table 3
Physical and mechanical properties of the Pleistocene fine-grained deposits [
53–
58].
| | Clayey sand | Sandy clay | Unified Soil Classification System (USCS) classification | SM | CL, CH | Min | Max | Av. | Min | Max | Av. |
| | Physical parameters | Liquid limit, LL (%) | 20.1 | 34.2 | 27.5 | 23 | 43.2 | 30.6 | Plasticity index, PI (%) | 7.5 | 20 | 12.2 | 7.5 | 27.9 | 15 |
| | Mechanical parameters | UC strength, qu (KN/m2) | 88 | 196 | 140 | 110 | 398 | 198 | Initial void ratio, eo | 0.33 | 0.45 | 0.40 | 0.39 | 0.71 | 0.49 | Compression index, Cc | 0.10 | 0.14 | 0.12 | ˗ | ˗ | ˗ |
| | Standard Penetration Test (SPT) | NSPT | 16 | >50 | ˗ | 25 | >50 | ˗ |
| | Triaxial test (UU) | Cohesion, c (KN/m2) | 30 | 40 | 37 | ˗ | ˗ | ˗ | Friction angle, (°) | 7 | 24 | 17 | ˗ | ˗ | ˗ |
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