Pore-scale redistribution of water during wetting of air-dried soils as studied by low-field NMR relaxometry.

@article{Todoruk2003PorescaleRO,
  title={Pore-scale redistribution of water during wetting of air-dried soils as studied by low-field NMR relaxometry.},
  author={Tiona R Todoruk and Cooper H. Langford and Apostolos Kantzas},
  journal={Environmental science & technology},
  year={2003},
  volume={37 12},
  pages={2707-13}
}
The kinetics of water uptake and redistribution in several soils and their components are studied using NMR relaxometry. Unlike the normal behavior observed in stable porous media, entry into micropores in the soil is a slow process as compared to entry into macro- and mesopores. This indicates that soils air-dried at ambient temperature include gel phases that have collapsed or reoriented, closing micropores, during drying. Wetting must then include the swelling processes that re-open… CONTINUE READING

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