Desiccation shrinkage of unconstrained soil in the saturated phase

Journal Article

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.

Duke Authors

Cited Authors

  • Hu, LB; Hueckel, T; Peron, H; Laloui, L

Published Date

  • 2008

Published In

  • Unsaturated Soils: Advances in Geo-Engineering - Proceedings of the 1st European Conference on Unsaturated Soils, E-UNSAT 2008

Start / End Page

  • 653 - 659