Geotextiles Types – Woven and nonwoven geotextiles
A woven geotextile or geo fabric is produced in the same way as the simplest sewing material. Weaving threads can be simple or complex, but in any case, it is organized according to a certain scheme. Even if you look at the patterns of the fibers, it is not difficult to recognize their specific appearance.
As raw materials, take polyester or glass. Around the canvas was of high quality, it is impregnated with curing mixtures.
During processing, textiles are guided through special calenders. There, the threads partially melt and the outer surface becomes stronger. The woven fabric allows the separation of material layers and provides:
- hardening of structures;
- even load distribution.
Nonwoven geotextiles are produced on the basis of polyester and polypropylene fibers, such a fabric is obtained by needling process. In appearance, this product is very similar to simple felt. The work begins with the formation of loose layers, which include fibers of different lengths. Cotton array compacted serrated needles that devour and connect the fibers together. The result is a material that effectively allows water to pass through.
In addition, igloprobivny tool has high strength and lasts a long time. An additional reinforcement of the orbits is carried out by adding geological grids. In order to obtain a thermally bound geotextile, the granules are melted and extruded. Then the canvas is covered with microscopic fibers. When such a coating is applied, the material is again treated with significant heat.
The melting of the filaments leads to their sintering. The strength level of thermally bound material is higher than that of other types of nonwovens. Similar products can be used to separate loose layers, they are very elastic and can carry significant loads. Geotextile fabric can also be made by knitting. In the production of rolls from 200 to 520 cm, the winding of the material is 30 to 130 pog.
The choice of a suitable option depends on the scope of the work carried out. The less waste, the better the choice. Black and white types of geotextiles are widely used today, they consist of propylene with fine pores.Such material is used on a large scale for capital construction, landscaping, as well as for the cultivation of berry and vegetable crops.
The advantages of the described solution are:
- optimal density of the product;
- load capacity up to 2 kPa;
- the same thickness in the longitudinal and transverse planes;
- Suitability for filtering;
- perfectly matched elongation at break.
Heat-treated geotextiles fall into the category of polypropylene-based needlestick materials as standard. Its fibers can theoretically be unlimited. Increased load tolerance is achieved due to the homogeneity of the structure of the material. It stretches slightly by 50% and does not exceed this limit. Water, acids, alkalis do not pose a danger, and plant roots do not germinate through such geotextiles.
Such properties define the main scope of heat-treated textiles:
- soil reinforcement;
- covering of waterproofing membranes from destruction;
- create a green roof;
- landscape formation;
- Drainage of foundation walls in various buildings.
To understand exactly what kind of modification is needed, you should familiarize yourself with the basic properties of this material. And it is worth starting with the strength of the geotextile canvas. Also, it is a good idea to get more familiar with applications of geotextile in various fields which we provided in another blog post.