Geotextile

Geotextiles are planar and permeable textiles. They serve as a building material in the area of ​​civil engineering, water and transportation infrastructure and geotechnical stabilization works an important tool.

Geotextiles are made of either natural ( such as reed, jute and coir ) or artificial ( such as polypropylene polyamide, polyester and polyethylene) materials and are used for cutting, Drainage ( Drain acting ), filtration, reinforcement, protection, packaging and erosion protection used. They come in the form of fabrics, non-wovens and composites for use. Because of the reduced durability of natural geotextiles are used only in rare cases.

Classification

Geotextiles can be in terms of their structure in three different types:

  • Tissues are geotextiles that generally consist of himself, usually at right angles, intersecting yarns or threads. They are used when high tensile strengths are required. In static loading, they are also as a filter.
  • Nonwovens are created by solidification areally successive deposited fibers. Depending on the solidification process ( needling, glue or fuse ) is replaced by the geotextile different elongation properties. Nonwoven fabrics are mainly used for cutting, filtering and protecting.
  • Composites are areally joined tissue, nonwoven fabrics and other materials. In this way, to properties of different geotextiles can be combined.

Applications

Geotextiles are mainly for the following applications:

Features

Starting point for the development of geotextiles was in the early 1970s, the construction of roads on soils with poor bearing capacity and high water content. To improve the stability of the substrate, in this case, a textile web is applied, and then covered with a filling material. In this way the lifetime and capacity of the traffic area is increased. Besides the use in road construction and road construction to geotextiles are also suitable for construction jobs in railway construction.

Besides the use in road construction geotextiles are also used in earthwork and civil engineering are used. For example, they serve as building material for the backup of dams and landfills or be in the area of ​​Bioengineering use. There can be avoided with the help of natural geotextiles made ​​of jute, reeds or coconut soil erosion and landslides on slopes, ditches or rivers banks. Furthermore, they support afforestation, the expansion of waterways and restoration of lignite opencast mines and landfills.

The geotextiles provide the plant growth advantages, since they protect against drying and direct sunlight.

Special Applications

  • The reinforcement of soil by means of geotextiles is called " reinforced earth ". Besides geotextiles work quite other geosynthetics such as geogrids and riding area tissue.
  • Geotextiles can also be used to Wanddränung of buildings
  • The surface of fresh concrete can be treated with the help of geotextiles.
  • Discharge of effluent from the soil gas methane under buildings

Norms and Standards

  • Leaflet for the application of geotextiles and geogrids in soil compaction of road
  • Technical delivery conditions for geosynthetics in earthworks of road construction (TL Geok E -StB 05)
  • DIN EN 15381 - Geotextiles and geotextile-related products - Characteristics required for use in the construction of road and asphalt overlays
  • DIN EN 15382 - Geotextiles - Geosynthetic barriers - Characteristics required for use in transportation infrastructure
  • RVS 08.97.03 geotextiles in the substructure
  • ÖNORM S 2076/2 landfills - geotextile protection layers
  • SN 670 240 - Geotextiles and geotextile-related products; Terms and Description
Geotechnics Reforestation Mechanically stabilized earth Engineering geology
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