What is geomembrane and how used?

Geomembrane is widely used at some stages of construction. For each specific case, there is a special type of material, it all depends on the conditions in which it should be applied. In today’s article we will look at what geomembrane is and where it applies.

What it is?

Geomembrane is a synthetic cloth that is absolutely waterproof. With it, an obstacle is created for moisture penetration. If you say simply, then geomembrane is Dense polyethylene, which is very elastic, which allows you to put it with all the irregularities of the relief and buildings. It has high strength and complete waterproofability. Such characteristics make it a versatile material that is used wherever Waterproofing.

The described canvas is very different from ordinary polyethylene. This is due to substances and production technologies that are used in its manufacture.

The material of the described web is not an ordinary polyethylene, but a composite, which is applied to the base of polyethylene. The composition contains different substances that prevent the destruction of the material under the influence of the atmosphere and direct sunlight.

The allowable temperature range is from +65 to -75 degrees Celsius. It is resistant to various aggressive substances of chemical and biological origin.

The canvas has a higher strength, If you compare it with polyethylene. With the thickness of the material from 0.3 to 3 mm It can withstand the perennial load of a vertical nature, stretching in a horizontal direction by 550% without surface damage. These indicators may vary depending on the brand and manufacturer of the canvas. The service life of the coating is from 50 years and more.

In production is used Technology of continuous extrusion, which makes it possible to get entire sheets without connecting seams. The size of the rolls of this product is in width to 2.7 m, and the length of all is united and equal to 50 m. To dock the canvases with each other there is a method of welding with a special hand tool.

Pros and cons

Consider the main advantages of the product described.

  • Strength. It depends on the physical possibilities of the source material, which is applied in the production of a specific roll. Based on this, we get a certain indicator of the PND. In addition, the thickness of the material directly affects the degree of strength. Additional enhancement of the web provides a reinforcing layer.
  • Elasticity. The material is very well stretched, especially if produced from PVD.
  • Strength. These materials are able to withstand the large pressure of the soil. They are not afraid of sharp stones and plant roots. It makes geomembrane excellent protection for foundations. In this case, the probability of damage to the material during the installation is extremely small.
  • Resistance to chemistry. Materials that are performed from polymeric substances, immune to the effects of aggressive chemical compositions (acid, oil, alkali). Due to this property, the product described can be applied to isolating the storage facilities of petroleum products, on polygons of toxic waste.
  • Ecology. This material is absolutely safe for the health of people and animals.
  • Durability. As mentioned earlier, the service life of this material is very large. This is determined by the fact that it is not subject to destruction (corrosion, ultraviolet radiation, drying).
  • Temperature differences. Material is also immune to ambient temperature. A large range of operating temperature values ​​allows the use of coating in both tropical climates and in constant cold conditions.
  • Easy mounting. Film is not a heavy material, it is easy to work with her. Rolls are rolled along the ground, and the material itself is very easy to cut. It is equally easy to store both on a small area and in large territories.

Disadvantages of such a material are very difficult to allocate, And they are more likely to be attributed to the difficulties of installation and the peculiarities of the area, and not to the immediate cons. For example, high density thick membranes are less elastic than their analogues from PVD. Work with them heavier. They are used mainly on relatively smooth surfaces.

Views

Waterproofing material Used in many areas of construction (foundations, ponds, agriculture). For certain purposes, the necessary view of the described web is used. Geomembrane can be divided into 2 types, namely:

  • HDPE high density;
  • LDPE low density (polyethylene).

    Justice It is worth noting that there are some more types of membranes, but they are very rare and find them on sale hard, so we will look at Read more The most common materials.

    • HDPE (PND). This material is made of low pressure polyethylene, has a high density. These membranes are high strength, resistant to physical and chemical exposure. Such a tight film. It is used to cover the smooth surfaces of a large area.

    The product can be seen at construction sites of artificial water bodies, tanks, storages for liquid substances.

    • LDPE (PVD). Two-layer polymer fabric made from high pressure polyethylene and low density using extruder. These membranes are very light, soft and elastic. Thanks to such physical properties, the described material may repeat the form of relief. It is suitable for repetition of the shape of the channels, River River, Canvas. In this regard, such a membrane can be successfully used in protecting and maintaining water. It can work as an anti-filter screen, can be applied in geotechnic and to protect the environment.

    • Geomembrane with geotextiles rolled. In this case, the polymer material is covered with a soft blade from 1 or 2 sides. These 2 different material are combined with each other due to heat. This type of membrane has increased strength and rough basis. Geotextile surface has a protective function. It prevents damage to the main material. The membrane duplicated by geotextiles is laid on the surface with sharp and rigid edges (crushed stone, gravel). Stacked the material must necessarily geotextiles to the stones. It has a one-sided method of sizing (type-5/1) and double-sided (type-5/2).

    As used?

    Waterproofing applied very often. Such a product Used for construction. The profiled membrane showed itself as waterproofing basements and protection against the roots of various plants, which are planted along the house. Due to its elasticity, simplicity of soldering 2 fragments and reliability from the flow of connecting seams, it works as a full-fledged bowl to protect the ground floor from groundwater on a plot and atmospheric precipitation.

    In addition to protecting from water intake in the basement, it can become good bowl for artificial reservoir. If you have a desire to make an artificial pond at your dacha, then without such a material, as an extruded geomembrane, you can not do.

    It will not allow water to go into the ground and stirred from the ground, which will certainly lead to the damage of water composition. Depending on the depth of the pond in it will be able to live fish all year round.

    Small pond in the backyard, the use of this material is not limited to. With it, you can create huge reservoirs and ponds. This material is a real find for farms for growing fish. I dug in the ground a big pit and pouring into it in it, you can avoid entering the substances that can negatively affect the health of pond fish. In addition to good performance, draining water from the water branch, the membrane is easily washed with a conventional high pressure sink from accumulated pollution.

    In agriculture, this material covers the walls of novels. Walls of firefighters are separated by the same material. The drainage system is performed using this coating. Plastic extruded membrane is used as a base for filling the foundation to distribute a large weight of concrete.

    Due to the sustainability of acids and other aggressive compounds, the TSW polygons cannot do without such a canvase. There are still many industries in which such material is useful.

    Manufacturers

    Russia has its own manufacturers for which the geosynthetic membrane is the main product. Consider the most famous of them.

    • “Anica”. Russian enterprise that produces high quality products, not inferior to foreign analogues. The production uses only high quality raw materials, which allows products to meet all the requirements of GOST. The described enterprise produces geomembrane of both types (PND and PVD). Thanks to this, the firm is able to fully meet the requirements of consumers and prevent the deficit of goods in the local market.

    • “Geoflaks”. This company has a whole plant at its disposal, which produces a geomembrane of both species under its brand name. The company’s products have a smooth and smooth surface, fully protected from moisture. It has all the same properties as any other membrane. 1 conveyor can produce up to 500 tons of finished products per month.

    • “Promgeopam”. It is considered the leading manufacturer of geomembran in the Russian market. The described plant produces membranes of all kinds and supplies its products not only to the Russian market. Extensive experience of the company, first-class equipment and qualifications of employees make it possible to produce high volumes of high quality goods.

    FEATURES OF MONTAGE

    PVC membranes are considered durable. It is true, but only subject to the correct installation. The most important thing is to correctly lay material. He must be placed. Before starting work, you must have a correctly calculated laying plan for the entire material.

    Laying the canvas occurs exceptionally manually using a special welding tool. It is important to remember about the temperature on the street and weather phenomena. Laying the material should not occur at the power of the wind more than 5 m / s. The air temperature does not have to be above -5 and above +40 degrees with. It is impossible to lay the membrane during the rain or immediately after it.

    Locked the cloth preferably on the purified homogeneous surface. You need to remove all foreign objects in advance, especially the roots of plants, sticks, boards, glass and any other garbage, which under pressure can damage the material. Cleanliness and uniformity of the coating play an important role in the service life of the coating.

    The method of fastening the geomembrane on the concrete wall is radically different from laying on the ground. Fastening the canvas to the wall is performed With the help of anchor bolts, which close from above using a polyethylene textured patchwork. All seams should be well registered on a large width of the seam. From how correctly the installation of this type of isolation is made, the quality and durability of the whole design depends.

    Therefore, such works must be carried out by high-level specialists. Otherwise, welding seams will not be sealed, and the polyethylene textured membrane will not perform its tasks.

    When welding 2 sheets of geomembrane, you need to know some features.

    1. Sheets are connected to each other with high temperature welding. This method is called extruded and performed by a special tool.
    2. After performing the main stage of welding, edges begin to fix.
    3. Final consolidation occurs in prepared trenches.
    4. It is desirable that the leaf is at least 10 cm from the edge. This will make it possible to perform a wide and reliable seam. It will be a little overvaluation of the material, but it is better to sacrifice 1 external roll than after the completion of all works to look for one leakage in multi-meter seams.

    Video review Geomembrane is presented on the video further.

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