|Title||Desiccation shrinkage of unconstrained soil in the saturated phase|
|Publication Type||Journal Article|
|Year of Publication||2008|
|Authors||LB Hu, T Hueckel, H Peron, and L Laloui|
|Journal||Unsaturated Soils: Advances in Geo Engineering Proceedings of the 1st European Conference on Unsaturated Soils, E Unsat 2008|
|Pagination||653 - 659|
Analysis of macroscopic desiccation shrinkage experiments indicates that most of the shrinkage occurs during drying while soil is still 100% wet. When air starts penetrating the soil, shrinkage practically ceases, while the water content is still above 20%. The remaining drying process occurs with a much-reduced shrinkage. In this context we look at the data of pore space evolution during saturated phase of drying as obtained via porosimetry. The observed behavior is modeled at a microscale using Poiseuille flow in capillary vessels with deformable walls driven by evaporation flux at the external boundary. A macroscopic model using Biot and Darcy theories for the continuum were recently presented by the authors. © 2008 Taylor & Francis Group, London.
|Short Title||Unsaturated Soils: Advances in Geo Engineering Proceedings of the 1st European Conference on Unsaturated Soils, E Unsat 2008|