RU127382U1 - REINFORCING GEOCOMPOSITE MATERIAL - Google Patents

Abstract

Reinforcing geocomposite material, including a needle-punched non-woven fabric (geotextile) bonded with a polymeric material, characterized in that it contains a main layer of geotextile onto which a woven polymeric material is applied by needle-piercing, and in this form has a water-permeable ability.

Description

The utility model relates to the field of construction of various soil structures and can be used to strengthen embankments on weakly bearing foundations, construct underground structures, build foundations, strengthen the bearing layer of the road surface, arrange landfills for industrial and household waste, lay pipelines, etc. Depending on the purpose, it has either water-permeable or waterproofing properties.

A known method of producing a multilayer fibrous material [1], in which the canvases are formed from stapled fibers, fastened by needle-piercing, impregnated with a binder, followed by drying and fixing of the binder, and then calendaring and cooling. Additional canvases are formed from fiber wastes, which are distributed between staple fiber canvases, while additional canvases from fiber wastes are taken in an amount of 10-50% by weight of the resulting multilayer material, and when bonding the canvases, the needles are pierced with a puncture rate of 60-220 per 1 cm ² . The formed canvases are subjected to preliminary needle piercing with a puncture frequency of 30-50 per 1 cm ² , and after the distribution of additional canvases between the canvases of stapled fiber, additional calendering of the canvases is carried out at a pressure of 5-20 kgf / cm.

The disadvantage of this invention is the complexity of the process of obtaining a multilayer fibrous material and the fact that it does not have reinforcing properties.

A known method of manufacturing a non-woven material [2] based on a fiber-thread mixture from waste cutting and trimming cotton textile fabrics, characterized by the formation of a fibrous canvas, mechanical bonding. Cotton spinning waste, comprising 15-20% of the surface density of the canvas, is additionally added to the fiber-thread mixture, while the latter is formed on a bobbin machine, and its bonding is carried out while duplicating it with a frame web, comprising 10-15% of the surface density of the canvas. As a frame web, a canvas from fiber waste is used, the length of which is 35-38 mm. As a frame web, a thread-piercing web is used. As a frame web, a fabric of film filaments is used. Duplication of the canvas with the frame web is carried out by applying the latter on both sides of the canvas.

The disadvantage of this invention is that the resulting material does not have reinforcing properties.

A product is known for protection against mechanical influences of submerged structures and a method for manufacturing such a product [3], comprising a needle-punched non-woven fabric that is partially embedded in a molded thermoplastic polymer sheet or roll material having a thickness less than the thickness of the fabric obtained from the mixture high-density low-density polyethylene, modified high-density low-density polyethylene and crumb rubber in the form of granules whose size is less than the thickness of the aforementioned o molded polymer material. A method of manufacturing the product involves mixing high density low density polyethylene 44 ppm, modified low density polyethylene high pressure 12 ppm and rubber crumb granules with a diameter of 0.2-0.8 mm, granulating the resulting mixture, heating it and extruding the thermoplastic mixture with a worm press through a flat slot head to form sheet or roll material and then calibrating it with calender rolls, and into calender rolls between one of them and a sheet of needle-punched non-woven material, the thickness of which is at least two times the thickness of the sheet or roll floor, is supplied for sheet calendaring and roll polymer material dimensional material, the roll gap is set smaller than half the sum of the thicknesses together kalandriruemyh materials.

The disadvantage of this technical solution is that the proposed material does not have high strength properties.

The purpose of the utility model is to create a high-strength reinforcing material that, depending on the purpose, has water-permeable or waterproofing properties.

This goal is achieved in that the reinforcing geocomposite material includes a needle-punched non-woven fabric (geotextile) bonded to a polymeric material. It contains the main layer of geotextile, on which the woven polymer material is applied by a needle-punched method, and in this form is water-permeable, and when applied from the side of the woven layer by thermal bonding of a polyethylene polymer waterproof film, the material acquires waterproofing properties, each layer of the material depending on its purpose may have various physical and mechanical characteristics.

Figure 1 shows a reinforcing geocomposite material, with culvert ability, figure 2 reinforcing a geocomposite material with waterproofing properties.

Reinforcing geocomposite material with a culvert is a three-dimensional structure consisting of a main layer of geotextile 1, on which a layer of woven polymer material 2 is applied by needle-piercing method (Fig. 1). To impart waterproofing properties to the reinforcing geocomposite material from the side of the woven layer 2, a layer of polymer waterproof film 3 is applied by thermal bonding. Depending on the application conditions, each layer of the reinforcing geocomposite material may have different physical and mechanical characteristics.

In production conditions, canvases of high-strength reinforcing geocomposite material, for example, when strengthening road embankments, are rolled out on a planned working surface and fastened together. Then the geocomposite material is filled with soil. During operation, reinforcing material with either culvert or waterproofing properties can be used.

The proposed technical solution has high strength properties, versatility, because depending on the application conditions it can be produced in two versions - with culvert and waterproofing properties and is convenient to operate.

BIBLIOGRAPHY

1. A.S. No. 988925 SU, MKI D04H 1/46. A method of obtaining a multilayer fibrous material / Averkiev VB, Neporent L.A., Pankratiev E.P., Shevelev L.S. (SU). - No. 3304983 / 28-12; claimed 04/08/1981; publ. 01/15/1983, Bull. No. 2.

2. A.S. No. 1770478 SU, MKI D04H 1/46. A method of manufacturing a nonwoven material / Orlova Z.N., Tarasov B.C. (SU). - No. 4808504/12; claimed on 04/20/1990; publ. 10/23/1992, Bull. Number 39.

3. Patent No. 2320822 RU, IPC E02D 31/00. Product for protection against mechanical stress of structures immersed in the soil and a method for manufacturing such a product / Kolganov A.V., Kolganov V.I. (RU). - No. 2006131040/03; claimed 08/29/2006; publ. 03/27/2008, Bull. No. 9.

Claims (1)

Reinforcing geocomposite material, including a needle-punched non-woven fabric (geotextile) bonded with a polymeric material, characterized in that it contains the main layer of geotextile onto which a woven polymeric material is applied by needle-piercing, and in this form has a water-permeable ability.

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