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1 INRODUCTION
Covers with capillary barrier effects (or CCBE)
have been recently proposed as an alternative to
covers with a low hydraulic conductivity layer to
limit the exchanges between wastes and the site sur-
roundings. This technology is based on the capillary
barrier principle; a phenomenon that appears under
partly saturated conditions when a fine-grained ma-
terial overlies a coarser one (e.g. Rasmuson and
Erikson, 1986, Morel-Seytoux, 1992). It is related to
the contrast in hydraulic properties between the two

Source: Aubertin, Michel - Département des génies civil, géologique et des mines, École Polytechnique de Montréal

Collections: Engineering; Environmental Management and Restoration Technologies