Flow-rate measurements in meter-size multicomponent geosynthetic clay liners - INRAE - Institut national de recherche pour l’agriculture, l’alimentation et l’environnement Accéder directement au contenu
Article Dans Une Revue Geosynthetics International Année : 2014

Flow-rate measurements in meter-size multicomponent geosynthetic clay liners

Mesure de la transmissiité d'interface à travers les géofilms bentonitiques

Nathalie Touze

Résumé

To quantify the flow rate through multicomponent geosynthetic clay liners (GCLs), three different meter-sized specimens from different manufacturers were characterized in a dedicated experimental column. This study allows quantification of the interface transmissivity of multicomponent GCLs when the coating or attached film is damaged over an area large enough to make edge effects negligible. For all multicomponent GCLs characterized, the coating or attached film was less than 0.7 mm thick. Steady-state results indicated flow rates ranging from 4.61 × 10−12 to 3.01 × 10−11 m3/s with interface transmissivities ranging from 1.20 × 10−11 to 7.59 × 10−11 m2/s, which are broadly in line with flow rates obtained from conventional geomembrane (GM)-GCL composite liners. Consequently, when the coating or attached film is damaged, the thickness and rigidity of the coating or attached film appears not to affect the steady-state flow rate and interface transmissivity, which leads to a good contact at the interface.
Fichier principal
Vignette du fichier
an2014-pub00041948.pdf (4.72 Mo) Télécharger le fichier
Origine : Fichiers produits par l'(les) auteur(s)

Dates et versions

hal-01493237 , version 1 (21-03-2017)

Identifiants

Citer

H. Bannour, Nathalie Touze. Flow-rate measurements in meter-size multicomponent geosynthetic clay liners. Geosynthetics International, 2014, 21, pp.26-31. ⟨10.1520/STP156220120088⟩. ⟨hal-01493237⟩

Collections

IRSTEA INRAE
55 Consultations
422 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More