No Title – Environmental aspects related to the many uses and functions of geosynthetics in large man-made structures

The lecture considers the environmental aspects related to the many uses and functions of geosynthetics (including biodegradable natural products) in large man-made structures, like landfills and dams, having a prevailing containment function for both solids and fluids. For landfills, the applications of geosynthetics are illustrated with reference to the different structural elements: subgrade, bottom and side lining system, leachate collection system, biogas extraction system, waste body, reinforced soil embankments, top capping and final reclaimed top surface. For dams, the applications of geosynthetics are reviewed according to the perfonned functions (barrier, drainage, protection, filtration, reinforcement and surficial erosion control), in relation to the different types of dams ( embankment, concrete, masonry and roller compacted concrete), both for new construction and rehabilitation purposes. Geosynthetics can contribute to reduce or minimize some negative impacts on the environment.