Geotextiles erosion

Geotextiles are the polymeric textile materials that are widely used in civil engineering to provide reinforcement, filtration, separation, drainage, erosion resistance and asphalt reinforcement. They take many forms nonwoven and woven textiles, grids, and openwork structures sandwiched between layers of nonwoven for lateral drainage. The principal... 

EN 13253, Geotextiles and geotextile-related products. Characteristics required for use in erosion control works (coastal protection, bank revetments), 2001. 

Geotextiles Asphalt overlay, drainage pads and pieces, sedimentation and erosion control, etc. 

Lekha, K.R., Field instrumentation and monitoring of soil erosion in coir geotextile stabilised slopes - A case study. Geotextiles and Geomembranes 22 (5) 399-413 (2004). 

On weak substrates the geotextile is likely to extend the service life of a road by a factor of 2.5-3.0 times compared to a non-stabilised construc-tion. ° Roads built in closed mining areas can be susceptible to sink holes suddenly occurring, owing to the collapse of old mine shafts resulting from sub-erosion processes. Road constructions in mining areas are, therefore, reinforced with uniaxial or biaxial geogrids. 

Slit-film also finds its way into many other applications. These include twine, woven fabrics for feed and fertilizer sacks, sand bags and bulk container bags, tarpaulins, mats, screens for erosion prevention, and geotextiles to stabilize soil beds. Fibrillated slit-film is used as a face yarn in outdoor carpets and mats. 

Depending on product functions, reclaimed fibres can be looked upon as conventional in technical textiles, particularly in nonwovens (mobility textiles which mainly serve to cover up surfaces or to insulate materials, agrotextiles, and geotextiles which are used to protect soil against erosion). In all these cases, reclaimed fibres are used because of low prices, or because they merely cover something up. However, reclaimed fibres are also applied in nonwovens to utihze highly valuable functional components. This concerns fibres which would not be available at a competitive price if made from primary materials, such as... 

This market received a boost in the early 1990s when the EPA issued the first federal standards for municipal solid waste landfills. The main objective was to prevent leakage and protect groundwater and soil near the landfills. Needle-punched fabrics are used as a geotextile cushion specifically where there is need for puncture protection, often on top of the liner, and as blankets in drainage systems inside the landfill, as a tarpaulin on the outside of the landfill, and underneath as a foundation for erosion control. 

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