Geosynthetics Terminology

Bituminous geomembrane : see Geomembrane, bituminous.

Bonded geogrid : see Geogrid, bonded.

Drainage composite : see Geocomposite drain.

Elastomeric geomembrane : see Geomembrane, elastomeric.

Electrokinetic geosynthetic : A composite material which may provide filtration, drainage, reinforcement in addition to electrical conduction.

Extruded geogrid : see Geogrid, extruded.

Geoarmour : A permeable geosynthetic material placed over the surface of the soil, in conjunction with pattern-placed block armour units, to prevent erosion.

Geobar : A polymeric material in the form of a bar, used in contact with soil/rock and/or any other geotechnical material in civil engineering applications.

Geoblanket : A permeable, biodegradable (synthetic or natural) structure placed over the soil for temporary erosion control applications, usually while vegetation is being established.

Geocell : A three-dimensional, permeable, polymeric (synthetic or natural) honeycomb or web structure, made of strips of geotextiles, geogrids or geomembranes linked alternatingly and used in contact with soil/rock and/or any other geotechnical material in civil engineering applications.

Geocomposite : A manufactured or assembled material using at least one geosynthetic product among the components, used in contact with soil/rock and/or any other geotechnical material in civil engineering applications.

Geocomposite clay liner : An assembled structure of geosynthetic materials and low hydraulic conductivity earth materials (clay or bentonite), in the form of a manufactured sheet, used in contact with soil/rock and/or any other geotechnical material in civil engineering applications.

Geocomposite drain : A prefabricated subsurface drainage product which consists of a geotextile filter skin supported by a geonet or a geospacer.

Geocomposite reinforcement : An assembled structure of dissimilar geosynthetic materials used for soil reinforcement.

Geofoam : A polymeric material which has been formed by the application of the polymer in semi-liquid form, through the use of a foaming agent, and results in a lightweight material with high void content, used in contact with soil/rock and/or any other geotechnical material in civil engineering applications.

Geoform : A three-dimensional, permeable geosynthetic structure, filled with soil or sediment waste such that the fill takes the shape of the inflated geoform.

Geogrid : A planar, polymeric structure consisting of a regular open network of integrally connected tensile elements, which may be linked by extrusion, bonding or interlacing, whose openings are larger than the constituents, used in contact with soil/rock and/or any other geotechnical material in civil engineering applications.

Geogrid, bonded : A geogrid manufactured by bonding, usually at right angles, two or more sets of strands or elements.

Geogrid, extruded : A geogrid manufactured by extruding polymers and drawing in a sheet form.

Geogrid, knitted : A geogrid manufactured by knitting together yarns or elements, usually at right angles to each other.

Geogrid, woven : A geogrid manufactured by weaving yarns or elements, usually at right angles to each other.

Geomat : A three-dimensional, permeable, polymeric structure, made of bonded filaments, used to reinforce roots of grass and small plants and extend the erosion-control limits of vegetation for permanent erosion control applications.

Geomattress : A three-dimensional, permeable geosynthetic structure, placed over the surface of a soil, and then filled with concrete mortar or soil, to prevent erosion.

Geomembrane : A planar, relatively impermeable, polymeric (synthetic or natural) sheet used in contact with soil/rock and/or any other geotechnical material in civil engineering applications.

Geomembrane, bituminous : A planar, relatively impermeable sheet manufactured from natural bituminous materials.

Geomembrane, elastomeric : A planar, relatively impermeable sheet manufactured from elastomeric polymers. Geomembrane, plastomeric: A planar, relatively impermeable sheet manufactured from plastomeric polymers.

Geonet : A planar, polymeric structure consisting of a regular dense network, whose constituent elements are linked by knots or extrusions and whose openings are much larger than the constituents, used in contact with soil/rock and/or any other geotechnical material in civil engineering applications.

Geospacer : A three-dimensional polymeric structure with large void spaces, used in contact with soil/rock and/or any other geotechnical material in civil engineering applications.

Geostrip : A polymeric material in the form of a strip, used in contact with soil/rock and/or any other geotechnical material in civil engineering applications.

Geosynthetic : A planar, polymeric (synthetic or natural) material used in contact with soil/rock and/or any other geotechnical material in civil engineering applications.

Geotextile : A planar, permeable, polymeric (synthetic or natural) textile material, which may be nonwoven, knitted or woven, used in contact with soil/rock and/or any other geotechnical material in civil engineering applications.

Geotextile, knitted : A geotextile produced by interlooping one or more yarns, fibres, filaments or other elements.

Geotextile, nonwoven : A geotextile in the form of a manufactured sheet, web or batt of directionally or randomly orientated fibres, filaments or other elements, mechanically and/or thermally and/or chemically bonded.

Geotextile, woven : A geotextile produced by interlacing, usually at right angles, two or more sets of yarns, fibres, filaments, tapes or other elements.

Knitted geogrid : see Geogrid, knitted.

Knitted geotextile : see Geotextile, knitted.

Nonwoven geotextile : see Geotextile, nonwoven.

Plastomeric geomembrane : see Geomembrane, plastomeric.

Woven geogrid : see Geogrid, woven.

Woven geotextile : see Geotextile, woven.