@article{fdi:010052125,
  title = {{M}odeling the swelling curve for packed soil aggregates using the pedostructure concept},
  author = {{B}raudeau, {E}rik and {M}ohtar, {R}.{H}.},
  editor = {},
  language = {{ENG}},
  abstract = {{T}he swelling curve is generally studied as structural soil volume dependence on water content during swelling, and not on time. {I}n this paper, we show how the swelling curve defined as the specific volume of the soil as a function of time, {V}(t), represent the dynamic properties of the pedostructure where the shrinkage curve represents and characterizes the hierarchical and functional organization of the soil medium. {T}his paper presents the development and experimental evaluation of the swelling curve for a dry bed of packed aggregates immersed in water using the pedostructure concept. {P}edostructure-based parametric functions for the soil structure and water interaction represented by soil shrinkage and matric water potential curves were used to derive the swelling curve equation. {T}his equation represents the kinetic of absorption of water by swelling of the primary peds within the pedostructure. {E}xperiments on wetting-drying cycles of reconstituted soil samples were conducted to obtain the parameters needed for the swelling curve equation. {T}he simulated swelling curves using the derived equation agreed well with the measured data. {T}he new swelling equation shows only one additional parameter; namely, the time to half charge, t(1/2), which seems to be a characteristic of the clay type. {I}t was found to be near 2100 s for kaolinitic soils and found to be independent of the clay content; as it decreased by a factor of two to three due to the presence of smectites in the sample. {T}his paper gives access to the study of the kinetic of water absorption by primary peds.},
  keywords = {},
  booktitle = {},
  journal = {{S}oil {S}cience {S}ociety of {A}merica {J}ournal},
  volume = {70},
  numero = {2},
  pages = {494--502},
  ISSN = {0361-5995},
  year = {2006},
  DOI = {10.2136/sssaj2004.0211},
  URL = {https://www.documentation.ird.fr/hor/fdi:010052125},
}