geosynthetic


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geosynthetic

[‚jē·ō·sin′thed·ik]
(civil engineering)
Any synthetic material used in geotechnical engineering, such as geotextiles and geomembranes.

Geosynthetic

Any synthetic material used in geotechnical engineering.

Geotextiles are used with foundations, soils, rock, earth, or other geotechnical material as an integral part of a manufactured project, structure, or system. These textile products are made of synthetic fibers or yarns and constructed into woven or nonwoven fabrics that weigh from 3 to 30 oz/yd2 (100 to 1000 g/m2). Geotextiles are more commonly known by other names, for example, filter fabrics, civil engineering fabrics, support membranes, and erosion control cloth.

Permeable geotextiles perform three basic functions in earth structures: separation, reinforcement, and filtration. Such geotextiles can thus be adapted to numerous applications in earthwork construction. The major end-use categories are stabilization (for roads, parking lots, embankments, and other structures built over soft ground); drainage (of subgrades, foundations, embankments, dams, or any earth structure requiring seepage control); erosion control (for shoreline, riverbanks, steep embankments, or other earth slopes to protect against the erosive force of moving water); and sedimentation control (for containment of sediment runoff from unvegetated earth slopes).

A geomembrane is any impermeable membrane used with soils, rock, earth, or other geotechnical material in order to block the migration of fluids. These membranes are usually made of synthetic polymers in sheets ranging from 0.01 to 0.14 in. (0.25 to 3.5 mm) thick. Geomembranes are also known as flexible membrane liners, synthetic liners, liners, or polymeric membranes.

Early liners included clay, bentonite, cement-stabilized sand, and asphalt. Modern geomembranes are commonly made of medium-density polyethylenes that are very nearly high-density polyethylenes (HDPE), several types of polyvinyl chloride (PVC), chlorosulfonated polyethylene (a synthetic rubber), ethylene propylene diene monomer (EPDM), and several other materials. Some geomembranes require reinforcement with an internal fabric scrim for added strength, or plasticization with low- molecular-weight additives for greater flexibility.

Geomembranes are able to contain fluids, thus preventing migration of contaminants or valuable fluid constituents. Since they prevent the dispersal of materials into surrounding regions, geomembranes are often used in conjunction with soil liners, permeable geotextiles, fluid drainage media, and other geotechnical support materials. The major application of geomembranes has been containment of hazardous wastes and prevention of pollution in landfill and surface impoundment construction. They are also used to a large extent in mining to contain chemical leaching solutions and the precious metals leached out of ore, in aquaculture ponds for improved health of aquatic life and improved harvesting procedures, in decorative pond construction, in water and chemical storage-tank repair and spill containment, in agriculture operations, in canal construction and repair, and in construction of floating covers for odor control, evaporation control, or wastewater treatment through anaerobic digestion. See Hazardous waste

References in periodicals archive ?
total quantity or scope: - demolition or perforation of asphalt surface, - removal of contaminated fillings in erosion areas, - storage of contaminated soil mass in a landscape structure, - manufacture of a sealing system (geosynthetic clay waterproofing membrane with drainage layer) in the planned commercial areas (inclination 4%), - manufacture of a waterproofing system (geosynthetic clay waterproofing membrane with drainage mat) in the planned landscaping (slope 1: 2,5), - producing a base course for the planned commercial space, - laying of drainage pipes for drainage of drainage and construction-time drainage with associated manhole structures made of concrete.
Louisiana, US-based geosynthetic lining materials installer Environmental Specialties International has acquired Oklahoma, US-based speciality contractor Patriot Environmental, the company said.
26 June 2019 - Louisiana, US-based geosynthetic lining materials installer Environmental Specialties International has acquired Oklahoma, US-based speciality contractor Patriot Environmental, the company said.
Rising Waste And Increasing Landfill Application Is Projected To Drive The Global Geosynthetic Clay Liner Market Size At A 4.9% CAGR
Summary: Adroit Market Research published a study on, "Global Geosynthetic Clay Liner Market Size By Application (Containment & Waste Water Treatment, Landfill, Roadways & Civil Construction, Others), By Region and Forecast 2018 to 2025".
[USPRwire, Mon Mar 18 2019] Adroit Market Research published a study on, "Global Geosynthetic Clay Liner Market Size 2017 By Application (Containment & Waste Water Treatment, Landfill, Roadways & Civil Construction, Others), By Region and Forecast 2018 to 2025".
Specifically, TexoFib specializes in manufacturing and supplying laminated geosynthetic materials, geodrain, geotextiles laminated with geogrid, geotextiles laminated with a waterproof membrane (HDPE, PVC, etc.), geosynthetic clay liners (GCL), geogrids and fiberglass geogrids.
Bridges using geosynthetic reinforced soil-integrated bridge system technology are popping up everywhere.
company and a fully integrated environmental company, in its acquisition through a new subsidiary, Geo-Synthetics Systems LLC, of substantially all of the assets of Geo-Synthetics, LLC, an installer of geosynthetic materials for industries such as energy, waste disposal, agricultural, and industrial, the company said.
Concrete Cloth GCCM (Geosynthetic Cementitious Composite Mat) proves its mettle in the Myra Falls Ditch Lining project, where engineers have upgraded storm water diversion infrastructure for a Vancouver Island zinc and copper mine.
Huesker launched the Fortrac Heavy Load geosynthetic support pad for storing extra-heavy units.
Prineville, OR, March 16, 2016 --(PR.com)-- Prineville, Oregon-based geomembrane containment systems fabricator, BTL Liners, provides geosynthetic liners for an array of applications, from irrigation districts and stormwater retention to baseball field covers and hay tarps.