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IS 16352 : 2020, GEOSYNTHETICS — HIGH DENSITY POLYETHYLENE ( HDPE ) GEOMEMBRANES FOR LINING — SPECIFICATION ( First Revision )

 

This standard covers smooth and textured HDPE geomembrane lining for use in canals, ponds, reservoirs, water features (bodies) for seepage control, for lining of landfills, hazardous waste management, solid waste management and industrial effluent for waste containments and for water proofing of large underground civil structures, basement, road underpasses, tunnels, foundation, roofs / terrace. The test used to characterize the HDPE geomembrane are intended to ensure good workmanship and quality and are not necessarily adequate for design purposes in view of the importance of environmental factors and specific performance objectives. Tests have been selected primarily with essentially natural aqueous system in mind. Other tests may be necessary to establish chemical resistance and durability under the condition of particular application.

Based on the type and thickness of HDPE geomembrane, the material is classified into two categories that is smooth geomembranes and textured geomembranes. Smooth geomembrane covers seven types having thickness range 0.50 mm to 3.00 mm; and textured geomembrane covers six types having thickness range 0.75 mm to 3.00 mm.

High density polyethylene geomembranes, are very low permeability synthetic liners used to control fluid or gas migration within soil, rock, earth or any other geotechnical material, as integral part of a manmade product, structure or system. The original use of geomembranes was for the distribution, storage and containment of potable agricultural water supplies. It still remains as an important element of this market, except now it has been broadened to contain a wide variety of liquids. Geomembranes have become the design choice as part of a cover system due to a variety of factors, such as imperviousness, chemical resistance, inertness to surrounding soils, ease and variety of seaming, mechanical strength and elongation, ease of application and economics, product durability and ageing over the designed life of the containment system.

This standard was first published in the year 2015 and has been revised to incorporate the following major changes:

  • a) Textures geomembrane (single or double sided) and its requirements have been incorporated.
  • b) Requirement for hydrostatic resistance has been modified.
  • c) Test method for UV exposure has been modified.
  • d) Requirement for stress crack resistance has been modified.

The guidelines and method for installation of HDPE geomembranes has also been provided for the benefit of all stakeholders.

 

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