%0 Journal Article
%T Experimental evidence of the double-porosity effects in geomaterials
%+ Institut National de la Recherche Scientifique [Québec] (INRS)
%+ Faculty of Chemical Engineering [Vietnam National University, HCM]
%+ Physique et Mécanique des Milieux Divisés (PMMD)
%+ Institut de Mécanique et d'Ingénierie de Bordeaux (I2M)
%+ Transferts, écoulements, fluides, énergétique (TREFLE)
%A Tran Ngoc, Tien Dung
%A Lewandowska, Jolanta
%A Bertin, Henri
%< avec comité de lecture
%@ 1895-6572
%J Acta Geophysica
%I De Gruyter Open
%V 62
%N 3
%P 642-655
%8 2014-06
%D 2014
%R 10.2478/s11600-013-0198-x
%K double-porosity
%K physical model
%K unsaturated/saturated con- ditions
%K tracer dispersion
%K non-Fickian behaviour
%Z Engineering Sciences [physics]/Mechanics [physics.med-ph]Journal articles
%X Double-porosity is an important characteristic of microstructure in a large range of geomaterials. It designs porous media with connected fissures/fractures or aggregated soils. The origin of double-porosity can be natural or/and it can result from mechanical, chemical or biological damage. The presence of double-porosity can significantly affect the behaviour of geomaterials. In this paper we provide an experimental evidence of the double-porosity effects by performing laboratory experiments. Series of tracer dispersion experiments (in saturated and unsaturated steady-state water flow conditions) in a physical model of double-porosity geomaterial were carried out. For the comparative purposes , experiments of the same type were also performed in a single-porosity model medium. The results clearly showed that the double-porosity microstructure leads to the non-Fickian behaviour of the tracer (early breakthrough and long tail) in both saturated and unsaturated cases.
%G English
%2 https://hal.science/hal-02092974/document
%2 https://hal.science/hal-02092974/file/Art_Lewandowska_al_Acta-Geophysica_2014.pdf
%L hal-02092974
%U https://hal.science/hal-02092974
%~ CNRS
%~ ENSAM
%~ INRA
%~ LMGC
%~ TREFLE
%~ UNIV-BORDEAUX
%~ AGREENIUM
%~ MIPS
%~ UNIV-MONTPELLIER
%~ I2M-BX
%~ INRAE
%~ UM-2015-2021
%~ HESAM
%~ HESAM-ENSAM
%~ IRENAV
%~ LAMPA
%~ LCPI
%~ LABOMAP
%~ LISPEN
%~ MSMP