Multi-scale approach for modeling desiccation shrinkage in granular soils

TitleMulti-scale approach for modeling desiccation shrinkage in granular soils
Publication TypeJournal Article
Year of Publication2014
AuthorsLB Hu, H Bista, B Mielniczuk, L Laloui, T Hueckel, and MS El Youssoufi
JournalGeotechnical Special Publication
Start Page512
Issue236 GSP
Pagination512 - 521
Date Published01/2014

This paper aims to identify and quantitatively evaluate various critical mechanisms associated with the processes of desiccation shrinkage and cracking in drying, silty soils. A previously developed 1D bundle-of-tubes model is refined to simulate the various stages of drying shrinkage in 2D, using the actual pore size distribution based on Mercury Intrusion Porosimetry (MIP) data. Experimental evidence at a meso-scale has shown that the air entry phenomenon may occur in two possible scenarios: air incursion at the external surface and formation of vapor nucleus in the interior. Further transition of solid-water structural configuration into funicular and pendular states from the initially capillary state is simulated. © 2014 American Society of Civil Engineers.

Short TitleGeotechnical Special Publication