BEHAVIOR OF DRAIN TUBES PLANAR DRAINAGE GEOCOMPOSITE UNDER EXTREME COLD TEMPERATURES

Stephan Fourmont, Pascal Saunier

In the proceedings of: GeoQuébec 2015: 68th Canadian Geotechnical Conference & 7th Canadian Permafrost Conference

Session: Barriers and Geosynthetics / Barrières et géosynthétiques

ABSTRACT: Drainage is a critical component of every construction in civil, environmental and mining engineering. Natural drainage material like gravel or sand is widely used but starts to be replaced by drainage geocomposites, more efficient in term of installation and environmental footprint. However, these solutions are not always adapted to the extreme climate of northern Canada. Indeed, the structure of the product and its chemical composition have a strong influence on its behavior under cold temperatures and some geocomposites can exhibit an important stiffness making them difficult to install. Their mechanical and hydraulic properties may also be affected. The use of drain tubes planar drainage geocomposites allow for the avoidance of these issues. This paper shows the main characteristics of this type of geocomposite, the lab tests results on its mechanical behavior under cold conditions and presents two case studies of a pond construction and a mine site rehabilitation in northern Canada.

RÉSUMÉ: l, de génie environnemental et minier. ée par des géocomposites de drainage plus adaptés du point de vue de la mise en place et en termes de réduction de grand nord canadien. En effet, la structure du produit et sa composition chimique déterminent son comportement vis-à-vis du froid et certains géocomposites peuvent présenter une rigidité importante dans ces conditions, rendant leur géocomposites de drainage à mini-deux études de cas de réalisation de bassin et de l

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