Effect of Filtration Coefficient Determination Method on the Scale Effect in Water-Saturated Fine-Grained Soils

Resumo

The methods of calculating the filtration coefficient k from data obtained in tests performed under the conditions of one-dimensional consolidation in terms of consolidation coefficient c_v, compressibility a_v and volume compressibility m_v, average particle size D₁₀, and void ratio e are investigated. The evaluated k used in the PLAXIS software system is taken for comparison. The filtration coefficients determined by different methods were used to study the scale effect in the Mohr-Coulomb model. The excess pore pressure for different diameter to height ratios of a sample was in better agreement with the values predicted by using k determined in PLAXIS. This is explained in part by the variability of the filtration coefficient during consolidation.