It is known that traditionally staple polymeric fabric is used as the basis for geotextiles, from which a needle-punched fabric, continuous monofilaments fixed on a thermal calendar, or polymer monofilaments can then be formed.
To make it clear and understandable for you, we give a simple diagram of the varieties of geotextile fabric:
Non-woven geotextiles are made from polyester or polypropylene (sometimes animal or vegetable fibers are added), by thermal bonding of threads or by needling. Geofabric, as the name implies, is obtained by the usual weaving of threads. And knitted geotextiles, which for this reason are often called geo-knitwear, are made by looping. It is much less common.
Note that the domestic non-woven geotextile, which is made from polypropylene needle-punched, is called dornit.
We state: the varieties of geotextiles are divided depending on the substance on the basis of which they are made. It can be aramid, polyester, polyester, nylon, polypropylene, acrylic, basalt or fiberglass, polyamide. In addition, geotextile fabrics differ in the way the threads are attached and produced.
Important! The most durable base for geotextiles is considered to be polypropylene, which is not afraid of environmental influences and withstands rather high loads.
The most important metric for geotextiles is density. The scope of the material depends on him:
- Density from 20 to 30 g / m2. Usually used to protect seed from birds. It allows both water and sunlight to pass through. Stows directly on the ground in the beds.
- Density from 40 to 60 g / m2. It is used in the construction of greenhouses and greenhouses, for mulching the soil, protecting against weeds, that is, almost exclusively in gardening.
- Density from 60 to 80 g / m2. This geotextile can be used to wrap drainage pipes and use them as filters for geomembranes..
- Density 100 g / m2. Used for arranging lawns and ennobling summer cottages in general, for example, during the creation of garden paths, as a lining for tiles and other materials.
- Density 200 g / m2. Suitable for creating drainage systems.
- Density 250 g / m2. It is used in the construction of highways, but only intended for light vehicles.
- Density 350 g / m2. Suitable for the construction of other highways, including federal ones.
- Density 400 g / m2. Can be used in the construction of airplane runways.
- Higher density geotextiles are used to create tank landfills and in the construction of hydroelectric power plants.
Also, geotextiles are actively used in the arrangement of green roofs, to strengthen slopes and slopes..
Important! Needle-punched geotextiles have the best filtering characteristics. The pores of such a web are not clogged either in the transverse or in the longitudinal direction. The characteristics of the remaining geotextile fabrics are below.
The technology of using geotextile, of course, depends on the area in which it is used. It is one thing to protect beds from birds and weeds, to build greenhouses, and another to build a garden path or motorway..
If geotextiles are laid on the ground, then the technology of its application can be briefly described as follows:
- The surface is leveled, lumps, bumps, pits are removed.
- The canvas, which is sold in the form of a roll, fits neatly. Laying can be longitudinally or transversely, but of course over the entire surface. Geotextiles can be attached to the ground with fastening anchors, leveled, pulled, be sure to connect to an adjacent canvas.
- Usually, the overlap of the canvases in large areas is at least 30 cm, the fastening between the pieces is performed either by heat treatment or by butt stitching.
- The selected material is poured from above, compacted.
A path on a site or a highway built using geotextiles will last much longer. This material is especially needed on difficult soils, with high humidity, in lowlands, on rocky ground, on slopes, in swampy areas. The cost of a roll of geotextile can be different, depending on the density – from about 12 to 62 rubles per square meter.