Geotextiles enhance both drainage and lining systems in environmental applications. In the large industry of waste containment, geotextiles are used to protect and cushion landfill liners and landfill capping systems, and they are used as critical components of geocomposites such as geocomposite drains and geosynthetic clay liners. Heavyweight, needle-punched nonwovens are use as cushion/protection for landfill and pond liners to keep adjacent stones in overlying or underlying drainage layers from puncturing the impermeable liner.
By Mattex Geosynthetics based in Dubai, UNITED ARAB EMIRATES.
The GEOWEB system offers design flexibility for unpaved roadway surfaces, base stabilization, road shoulders as well as erosion protection of embankments and stormwater drainage channels. The 3D GEOWEB structure offers strength improvements to the road base layer for asphaltic and concrete pavements far greater than delivered by geogrids. A single GEOWEB layer performs well over soft subgrades - while geogrids require 2-3 layers for the same benefit - saving cost and construction time. Unpaved roads built with the GEOWEB system are permeable, and require 50% less infill. Roadway slope and channel designs include vegetation, aggregate or concrete protection.
By Presto Geosystems based in Appleton, WISCONSIN (USA).
It is also possible to retrofit a monitoring system in existing surface sealing liners without impairing the synthetic liner sheet or the immediately adjacent functional layers. For this purpose, cable trenches must be dug in the recultivation layer above the drainage layer. The detection cables are then laid in these trenches.
By ELD Environmental Leak Detection GmbH based in Berlin, GERMANY.
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