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Mechanisms of desiccation cracking of soil: Validation

Authors
  • Peron, H.
  • Hu, L. B.
  • Laloui, L.
  • Hueckel, I.
Publication Date
Jan 01, 2007
Source
Infoscience @ EPFL
License
Unknown
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Abstract

Mechanisms of shrinkage and the conditions leading to cracking of drying soils are addressed. An elastic formulation of the hydro-mechanical drying problem is presented. It relies on the analogy which can be drawn between the desiccation process and thermo-elasticity. The validity of the analogy is discussed in the light of finite element simulations of air drying experiments on a rectangular soil slab resting on a substrate. Two kinds of tests are dealt with: free desiccation and substrate constrained desiccation tests, with different kinematic boundary conditions. The discussed model is able to reproduce some of the experimental observations.

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