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Design of amended marine clay liner
Published in Sheela Evangeline, M.R. Rajkumar, Saritha G. Parambath, Recent Advances in Materials, Mechanics and Management, 2019
S. Meenu Nair, A.R. Ajitha, S. Chandrakaran, Sheela Evageline
Integrated into all liner systems is a leachate collection system. This collection system is composed of sand and gravel or a geonet. A geonet is a plastic net-like drainage blanket. In this layer is a series of leachate collection pipes to drain the leachate from the landfill to holding tanks for storage and eventual treatment. In double-liner systems, the upper drainage layer is the leachate collection system, and the lower drainage layer is the leak detection system. The leak detection layer contains a second set of drainage pipes. The presence of leachate in these pipes serves to alert landfill management if the primary liner has a leak. Components of the liner system are protected by a layer that minimizes the potential for materials in the landfill to puncture the liner. This protective layer was traditionally composed of soil, sand, and gravel, but many landfills now use a layer of soft refuse instead of soil. Soft refuse consists of paper, organic refuse, shredded tires, and rubber [9].
Sanitary Landfill Planning, Design and Operation
Published in Syed R. Qasim, Walter Chiang, Sanitary Landfill Leachate, 2017
Geonets are synthetic drainage material which are often used in lieu of drainage sand and gravel. The advantages of geonets are that they replace 30 cm (12 inches) of drainage sand, thus increasing the landfill space for waste. They are easily installed on steep side slopes where sand and gravel would not be stable, and they provide a higher drainage uniformity than sand and gravel.
Fundamentals of ground improvement systems
Published in Hsai-Yang Fang, John L. Daniels, Introductory Geotechnical Engineering, 2017
Hsai-Yang Fang, John L. Daniels
Geonets: A Geonet is an abbreviation of geosynthetic drainage nets. Geonets are formed by the continuous extrusion of polymeric ribs at acute angles to each other. They have large openings in a netlike configuration and the primary function of geonets is drainage.
Performance evaluation of demolition waste infilled geocell-reinforced subgrade by flexural and rutting analysis
Published in Road Materials and Pavement Design, 2022
The geonet used had a nominal thickness of 1.1 mm. The geonet was also used as a basal reinforcement for the geocell layer. The geonets were stapled together to obtain the geocell mattress (Table 5) (IS 13162, 1992).