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Cas pratique : État de la retenue d’El Golfo dans l’île d’El Hierro (îles Canaries) State of the EPDM polymeric geosynthetic barrier in the “El Golfo” water reservoir at the island of El Hierro (Canary Islands)

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Author(s): BLANCO, Manuel ; GARCIA, Florencio ; SORIANO, Jesús ; CASTILLO, Francisca ; AGUIAR, Escolàstico ; VARA, Tatiana

Journal: Sciences Eaux & Territoires : la Revue du IRSTEA
ISSN 2109-3016

Volume: 2012;
Issue: 08;
Start page: 14;
Date: 2012;
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Keywords: Géomembrane | EPDM | Durabilité | Retenue

ABSTRACT
La pérennité des matériaux géosynthétiques garantit la mise en place d'un système de protection efficace et durable pour l'environnement. Cet article présente le comportement sur douze ans d’une géomembrane en caoutchouc synthétique installée dans la retenue d'eau d’El Golfo aux îles Canaries : des résultats encourageants qui montrent un bon état de conservation de la géomembrane face aux aléas climatiques.In 1995 the water reservoir named “El Golfo” (Spain) was built and waterproofed with a synthetic rubber geomembrane of Ethylene-Propylene-Diene terpolymer (EPDM). The Central Laboratory of Structures and Materials CEDEX has tested the initial properties of the geomembrane that served as a basis to evaluate the membrane’s durability. Periodically, samples were taken and tested as follows: tensile strength, elongation at break, tensile strength at 300% of elongation, Shore-A hardness, static and dynamic puncture resistance, foldability at low temperature, shear and peel resistance of seams, optical and electron microscopy.
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