Geogrids and geogrids are offered for sale in a wide range. They are similar in principle of operation and novelty. The choice of the consumer will depend on his intentions and the complexity of the work. For slopes, the angle of which is not less than 70 °, it is better to use a geogrid, but if it is necessary to strengthen steeper surfaces, it is recommended to buy a geogrid.
Using slope grids
The geogrid for strengthening slopes is a rolled material, which consists of geofilaments. This product is designed to evenly distribute the load across the footprint. It is used in road construction, as well as reinforcing slopes.
In the first case, we are talking about strengthening the roadway. The mesh perfectly provides adhesion of different materials, is characterized by wear resistance and a long service life of 25 years or more. When purchasing a geogrid to strengthen slopes, you should familiarize yourself with its standard dimensions, which are 2 x 5 m.
Main advantages
Among the main advantages due to which the described material was so common among consumers, it should be noted:
- long term of operation;
- quite a wide range of temperatures;
- chemical resistance;
- quick installation;
- ability to withstand uneven shrinkage;
- high wear resistance;
- flexibility;
- environmental safety.
The grid is quite simple to install, while the cost of other construction work is reduced. The final design takes quite a long period of use. Operation of the grid is possible at temperatures ranging from -70 to +70 ° C, which is important for severe frosts and changeable climates.
The geogrid for strengthening slopes has another important plus - resistance to ultraviolet and microorganisms. All this extends the scope and allows you to get additional applications. At break, the mesh lengthens. It passes moisture well and does not exclude the growth of green spaces.
Description
The described grid is presented for sale in two types, one of which must be chosen taking into account the fact that you plan to strengthen. Flat material with rectangle-shaped cells is a biaxial mesh. It is used for mounting a car belt. The latter can be protected from impressive loads or reconstructed.
Suitable material for reinforcing concrete structures. For steep slopes, it is recommended to use a uniaxial version of the grid, which is also suitable for protecting slopes from landslides. This solution is used in the construction of houses, as well as the strengthening of soft soils.
Major manufacturers
If you need a geogrid to strengthen the slopes in the country, then for a start you should familiarize yourself with the main manufacturers of this material. The Tensar brand is an American concern whose activities are aimed at the development and production of biomaterials. The company supplies its products to European countries, but in the Russian market the grid is presented in a small amount, because its cost is quite high, and the materials are premium.
The most common uniaxial grid "Tensar" RE and UX, which are made of high density ethylene. The company calls them the most stable and durable of the entire line. This material is most often found when reinforcing embankments, slopes and slopes. But for road repair work used biaxial mesh SS. Their distinguishing features are lightness and high strength.
The company has its own developments, for example, a triaxial TriAx mesh. This material consists of polypropylene and polyethylene layers, which provide the ideal isotherm, providing the product with strength and endurance.
Manufacturer "PlastTechno"
This company has been on the market for more than 15 years. The main activity is aimed at the manufacture and sale of geosynthetic goods that are used in various fields of construction. The brand has become popular due to its low prices and decent quality products.
The plant cooperates with Russian customers, and prices are focused on domestic consumers. The distinctive features of the plant are custom-made work and the availability of individual supply lines for large wholesale customers.
ARMOSTAB company
The geogrid to strengthen the slopes, the photo of which you can find in the article, is also made by ARMOSTAB. This company is quite large and has established itself as one of the leaders in the field of production of geomaterials. The company focuses on the quality characteristics of products by investing in a production base.
The company is actively developing and offers consumers affordable prices. The supplier cooperates with government agencies and develops products, selling them at the regional level. The material is used in the construction of large facilities in Russia.
The main types of geogrid
Modern manufacturers of materials supply the market with grids that are used for reinforcing asphalt concrete and strengthening slopes. A geogrid can be classified according to several criteria, among others, material should be highlighted, it can be:
- polyethylene;
- polypropylene;
- polyester;
- polyamide;
- basalt;
- fiberglass.
You can also subdivide products according to their intended purpose. They are used for asphalt concrete, as well as reinforcing soil or concrete. When choosing a geogrid for strengthening slopes and slopes in a country house, you should pay attention to the fact that this material is also classified according to the orientation of spatial nodes. Thus, the grid can be uniaxial and biaxial or anti-erosion.
On sale, you can find different nets that differ from each other in the manufacturing method. In some cases, casting is used, in others - weaving, while in the third, the material is joined by the nodal method. If you have elongated cells in front of you, then you can be sure that the grid is uniaxial and is used to reinforce soil layers and separate them. In this case, several technologies are used:
- dumping;
- production of dams, restoration and strengthening of slopes;
- terracing of the site.
Dumping involves the use of non-metallic materials in areas where the soil has a low design resistance. As for the manufacture of dams, they are installed on retaining walls and slopes. If you want to reinforce asphalt, build a site with a cheap coating or road, then it is better to use a double grid, which is used on crushed stone soil.
Some characteristics of the geogrid depending on the material in the base
Before choosing a geogrid for strengthening slopes and slopes, it is necessary to pay attention to what material underlies it. It will affect some characteristics. For example, a polypropylene mesh has low strength and the same resistance to the sun. But the material is resistant to chemicals, as well as to biological organisms. The polypropylene mesh is waterproof, which cannot be said about the polyamide variety. If it is exposed to water, then resistance to moisture is reduced by 30%.
The polyester mesh perfectly tolerates the effects of water, it has excellent biological stability and tolerance of ultraviolet rays. The polyester mesh is durable, as is the polyamide mesh. However, the latter does not have such a high UV resistance. But chemical resistance decreases at a pH of less than 5.5.
Looking closer at the basalt or fiberglass geogrid to strengthen the slopes, the photo of which is presented in the article, you should take into account that these materials are not so resistant to aggressive environments, so they are laid under asphalt. Polyester mesh is the most durable. When buying material, you must consider its main characteristics, among them:
- elongation at break;
- strength;
- stretching;
- cell sizes.
The first parameter can vary from 13 to 15%. Tensile strength is equal to the limit of 30 to 50 kN / m. As for the cell, its minimum size is 1 x 1 cm. The maximum cell parameter reaches 5 x 5 cm. Injection geogrid to strengthen the slopes in the summer cottage is made by extrusion. For this, holes are made in the hot material, but other techniques can be used. For example, the web stretches in one or both directions. Sometimes an endless web is squeezed out of a flat slit.
Features of laying geogrid
The geogrid is laid by the method of transverse or longitudinal rolling of rolls on a slope. If the latter are gentle, then the installation of the mesh is recommended to be carried out in the longitudinal direction. A geogrid for strengthening slopes at a summer cottage is rolled laterally if work is carried out on the lower or upper parts of the embankment. At the same time, it is possible to increase the soil resistance to shifts.
It is necessary to start work on the transverse laying of the material from the edge. Cloths of the required length are cut in advance. Roll the net from the bottom of the slope in the longitudinal direction. The overlap should be a limit of 20 to 30 cm. The geogrid cloth to strengthen the slopes in the country is rolled out and fixed to the surface every 10 m. Use for this it is necessary anchors or staples. They should be made of strong wire with a diameter of 3 mm or more.
The width of the rolls also needs to be fixed in the same way in two or three places. As soon as the geogrid is laid, plant soil with plant seeds is laid out on top. The thickness of the soil should be approximately 10 cm. This will ensure uniform grass cover and the necessary moisture regime.
Description of the AGM-Slope grid
The geogrid for strengthening slopes "AGM-Slope" is a material that provides increased operational performance of the road. The coating gains an increased service life, it does not appear various defects such as potholes, cracks and ruts. Slopes gain stability, this applies even to those that have increased steepness.
Weak bases after laying the mesh gain the quality of increased bearing capacity. The material is made of polyester fiber and has anti-erosion properties. The structure is three-dimensional, due to this, it is possible to maintain and strengthen the soil on inclined surfaces.
Geogrid in Kazakhstan
If you decide to lay the geogrid to strengthen the slopes with your own hands, then you can use the technology that was presented above. But for the residents of Kazakhstan, the market presents KGS products, which have the appearance of a flat, durable material, supplied in rolls. It is processed by a special compound, which increases and improves the stability of physical and mechanical characteristics.
This fiberglass mesh is made of high-strength fiberglass threads that are stitched or glued together, and then processed with a high-strength polymer composition. It is noteworthy that this geogrid for strengthening slopes in Kazakhstan can be operated at temperatures up to +480 ° C.
For reference
In the sanitary norms and rules 45. 13330 you can find the features of the technology by which slopes are strengthened. Using a geogrid is the most economical option for individual construction. By purchasing a geogrid, you increase the budget and do not exclude the possibility of mixing layers. Do not use budget geotextiles, as it is unsuitable for soil reinforcement. This will not save money, but only make the work more expensive.
Conclusion
Strengthening is possible only in the absence of flooding and a weak watercourse. This should be considered when carrying out work that you can carry out yourself. If the conditions are difficult, then a geogrid should be placed on top of the grid. The cells of the latter should be filled with coarse gravel, instead of which concrete can be used. With regard to difficult operating conditions, they include an intensive watercourse and flood waters. Do not start work with them.