In this webinar, we will show why double lining systems offer a significantly better performance than single liners, when the performance sought is the mass of liquid that can flow into the environment.

The most common types of geosynthetic lining systems will be presented: simple liner, composite, double, or double composite. The benefits of superposing different layers of geosynthetics to minimize the transmission of liquids or contaminants through a liner will be explained: contribution of each geomembrane, of the primary and the secondary drainage layer, of the underlying soil or GCL.

Elements of design specific to double lining systems will be presented, and in particular the hydraulic design of secondary drainage layers; the limits associated with the current practice for designing geomembranes for puncture resistance in the context of a double lining system; considerations on veneer stability, etc.

Eric Blond is an independent consultant offering technical services to the geosynthetics and engineered construction material industries. His key expertise include soil filtration, drainage, dampproofing, waterproofing, durability, among other functions and applications of Geosynthetics.

Eric Blond is actively involved in several technical committees and Industry associations, such as ASTM D35 (Chairman of subcommittee D35.10 on geomembranes), ISO TC221 (Chairman of the Canadian Mirror Committee), the IGS – International Geosynthetics Society (chairman of the Technical Committee on Hydraulics, Secretary of the North American Chapter IGS-NA), The Canadian Geotechnical Society, The Canadian Commission on Construction Material Evaluation, and CSA A123 on roofing materials.

Eric Blond is committed to education and introduction of geosynthetics technologies. He has authored more than 100 technical papers, conferences, and courses. He is an invited lecturer at Ecole Polytechnique de Montreal. He also offers custom trainings to engineering firms, and regularly contributes to workshops, pre-conference short courses and other training events.

He is a professional engineer registered in Quebec and Alberta. With more than 25 years of experience and projects conducted in North and South America, Europe and the Middle East, Eric Blond holds one of the most comprehensive independent expertise in geosynthetics and polymeric materials used in the construction industry.