Civil Engineering Construction Uniaxial Geogrid For Retaining Wall
Uniaxial Plastic Geogrid Introduction
Polyethylene uniaxially stretched geogrid is made of high-density polyethylene (HDPE) as raw material, plasticized, extruded, punched, heated, and stretched. Through stretching, the originally scattered chain-shaped molecules are reoriented to a linear state, which fully improves the tensile strength and rigidity of the grid. Laying it in the soil, through the occlusion and interlocking between the grid mesh and the soil, a stress transmission mechanism is formed, so that the local load can quickly and effectively spread to a large area of soil, thereby achieving The purpose of reducing local damage stress and increasing the service life of the project.
The outstanding advantage of polyethylene uniaxially stretched geogrid is that it has little tendency to deform (creep) under long-term continuous load, and its creep resistance is much better than other geogrids, which is important for improving the service life of the project. effect.
This product is suitable for the construction of roads, railways and reinforced retaining walls, dams, bridge decks, steep slopes and geocells on the coast of rivers and lakes. Its function is to increase the bearing capacity of the retaining wall or dam, extend the service life, reduce the floor space, shorten the construction period, reduce the construction cost, and reduce the maintenance cost.
The unidirectionally stretched geogrid is formed by extruding a high molecular polymer into a thin plate, punching a regular mesh, and then stretching it longitudinally. In this process, the polymer becomes a oriented linear state and forms an oblong network integral structure with uniform distribution and high node strength. This kind of structure has quite high tensile strength and tensile modulus, especially our company's products of this kind have a high early stage (elongation rate of 2%-5%) tensile strength and tensile modulus that exceed the international level. . It provides the soil with an ideal interlocking system for bearing and spreading forces. The product has high tensile strength (>150Mpa), adapts to various soils, and is currently a widely used reinforcement material.
Uniaxial Plastic Geogrid Specification
| Properties |
GG60PP |
GG80PP |
GG110PP |
GG150PP |
GG260PP |
GG300PP |
| Tensile Strength (kN/m) |
60 |
80 |
110 |
150 |
260 |
300 |
| Elongation Ratio |
≤10% |
≤10% |
≤10% |
≤10% |
≤10% |
≤10% |
| Strength at 2% Elongation (≥kN/m) |
17 |
26 |
32 |
45 |
94 |
105 |
| Strength at 5% Elongation (≥kN/m) |
35 |
48 |
64 |
90 |
185 |
195 |
| Roll Length (m) |
100 |
100 |
50 |
50 |
50 |
50 |
| Roll Width (m) |
1-3 |
1-3 |
1-3 |
1-3 |
1-3 |
1-3 |
Uniaxial Plastic Geogrid Feature
1. The polymer is in the shape of a directional line, forming a long oval network structure with uniform distribution and high node strength. This structure has quite high tensile strength and rigidity, and provides ideal bearing capacity and diffusion interlocking system for the soil.
2. The outstanding advantage of unidirectional plastic geogrid is that it has a small tendency to deform (creep) under long-term continuous load, and its creep resistance is much better than other materials, which plays an important role in improving the service life of the project.
3. The occlusion and interlocking of the grid and the soil constitutes an efficient stress transmission mechanism, which enables the local load to be quickly and effectively spread to a large area of soil, thereby reducing local damage stress and increasing the service life of the project.
Plastic Uniaxial Geogrid Fuction
1. One-way geogrid is used to reinforce weak foundations: Geogrids can quickly increase the bearing capacity of foundations, control the development of settlement, and confine the road base to effectively distribute the load to a wider base. Thereby reducing the thickness of the base layer, lowering the project cost, shortening the construction period and prolonging the service life.
2. One-way geogrid is used to reinforce asphalt or cement pavement: the geogrid is laid on the bottom of asphalt or cement pavement, which can reduce rutting depth, prolong the fatigue life of the pavement, and reduce the thickness of asphalt or cement pavement to save cost.
3. The unidirectional geogrid is used to reinforce the embankment dam and the retaining wall: the traditional embankment, especially the high embankment, often needs to be overfilled and the edge of the shoulder is not easy to compact, which will cause the slope to be flooded and collapsed in the later stage. The phenomenon of instability occurs from time to time, and at the same time, a gentle slope is required, which covers a large area, and the retaining wall has the same problem. The use of geogrids to reinforce the embankment slope or retaining wall can reduce the area occupied by half. Area, extend the service life, reduce the cost by 20-50%.
4. Unidirectional geogrid is used to reinforce rivers and sea dikes: it can be made into stone cages, and then used together with grids to prevent the dam from being washed by seawater and cause collapse. The stone cages are permeable, can slow down the impact of waves, prolong the life of the dam, and save Manpower and material resources shorten the construction period.
5. One-way geogrid is used to treat garbage landfills: the combination of geogrid and other soil composite materials to treat garbage landfills can effectively solve the problems of uneven foundation settlement and derived gas emissions, and can maximize The storage capacity of the landfill.
Uniaxial Plastic Geogrid Usage
It is suitable for all kinds of roads, railway lines, and airport subgrade projects to improve ground improvement.
It is suitable for permanent installation of subgrade improvement such as large and medium-sized underground parking lots and port freight stations.
The slopes of railway lines and roads can be used for greening.
The available tunnels are improved.
It is suitable for the secondary increase of the steep slope after the one-way extension of the geogrid is raised to further increase the steep slope and avoid soil erosion.
Mine mining, pit structure reinforcement
Construction method of one-way geogrid:
Excavate the foundation bed, set up a sand cushion (the height difference is not more than 10cm), roll it into a platform, and lay a grid. The longitudinal axis should be consistent with the main force direction, and the longitudinal overlap should be 15-20cm, the lateral 10cm, and the overlap Bind it with plastic tape, and fix it on the ground with U-shaped nails every 1.5-2m on the laid grid. The laid geogrid should be backfilled with earth material in time. The number of layers of the laid geogrid depends on the technical requirements. The construction process requirements of the geogrid: the paving surface of the geogrid should be relatively flat. After the paving layer has passed the experience, in order to prevent the longitudinal skew phenomenon, first draw a white line or hanging line on the paving layer according to the width. You can start paving, and then use iron nails to fix the ends of the grille (8 nails per meter width, fixed at a uniform distance). After fixing the ends of the grille, use a paving machine to slowly pull the grille forward, and manually tighten and straighten it every 10 meters long until one roll of grille is finished, and then another roll is laid. The operation is the same as before. After laying a roll, use a 6T-10T roller from the starting point to roll it in the forward direction. (If paving on the middle layer and leveling layer, it is better to use a steel roller roller; if the grating is directly laid on the concrete pavement, it is better to use a rubber roller roller.) For the section length, after the section length of the grid should be paved, check the paving quality as a whole, and then pave the next section. When laying the next section, the grid and the grid can be overlapped with a length of 10-15CM, and fixed with iron nails or wooden wedges, and then continue to pave the second section in the forward direction. By analogy, the operation requirements are the same as before.
Company introduction:
Hengquan company was established in 2013, has become one of the leading and professional manufacture of many kinds of Geosynthetics and wire mesh.
(such as:Geocell,Geotextile,Geomembrane, Geogrid,, ,Gabion box,Welded wire mesh panel) in the world market. We got quality control to make sure every product be in good quality, which can make sure that any bad products will not sent to clients.
We got customers from American, Canada, Russia,Gemany and over 20 countries and enjoy good reputation.
Welcome to contact.
Leo
Manager of Hengquan company
Phone/Whatsapp/Wechat: +8615030705799
