Table 6: Comparison of the coefficient of consolidation evaluated by horizontal and vertical permeability values and the 3D consolidation apparatus.

Soil typesVertical stressesCoefficient of consolidation by permeability valuesCoefficient of consolidation by 3D consolidation apparatusErrors (%)
σ (kN/m2)cv3 × 10−6 (m2/s)cv3 × 10−6 (m2/s)

Silty sand with clay soil10004.34103.267−24.75
20008.12607.131−12.24
40016.09314.927−07.24
80019.89618.471−07.16
Silty-clay soil1001.3801.037−24.95
2002.0821.870−10.18
4004.5384.301−05.21
8004.8144.618−04.05