%0 Journal Article
%T Focus : ¨¦valuation de l'¨¦tanch¨¦it¨¦ des g¨¦omembranes en bitume oxyd¨¦ apr¨¨s exposition Long term hydraulic performance of exposed oxidized bituminous
%A TOUZE-FOLTZ
%A Nathalie
%A CROISSANT
%A Didier
%A FARCAS
%A Fabienne
%A ROYET
%A Paul
%J Sciences Eaux & Territoires : la Revue du IRSTEA
%D 2012
%I IRSTEA
%X Les g¨¦omembranes en bitume oxyd¨¦ sont utilis¨¦es dans la composition des barri¨¨res d'¨¦tanch¨¦it¨¦ de nombreuses applications : barrages, canaux, couvertures d'installations de stockage de d¨¦chets. L'¨¦volution de la performance hydraulique de ces mat¨¦riaux au cours du temps est donc un enjeu important. Focus sur les r¨¦sultats obtenus en termes de flux d'eau mesur¨¦s sur des ¨¦chantillons de g¨¦omembranes en bitume oxyd¨¦ provenant de six ouvrages hydrauliques diff¨¦rents, bassins et barrages. This paper presents the results of a study aiming at quantifying the evolution of water flow rates through oxidized bituminous geomembranes, uncovered or covered. The flow rate was measured with the apparatus from the NF EN 14150 standard, adapted in some cases. Variable results were obtained depending on the presence or not of a protection on top of the geomembrane, and on the conditions of exposition. The recommendation arising from results obtained is to cover oxidized bituminous geomembranes in order to ensure a good hydraulic performance of those materials on the long term.
%K G¨¦omembrane
%K Bitume oxyd¨¦
%K D¨¦bit de fuite
%K Mesure
%K Vieillissement
%U http://www.set-revue.fr/sites/default/files/archives/Touze.pdf