Application Of Pp/Pe/Hdpe Uniaxial Geogrid In Reinforcement Of Retaining Wall And Abutment
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.
It can reasonably prevent construction damage caused by being crushed and destroyed by the machine during the whole process of construction
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
Main use of single plastic geogrid
1. Used to reinforce weak foundations: Geogrids can quickly increase the bearing capacity of the foundation, control the development of settlement, and the confinement effect on the road base can effectively distribute the load to a wider base, thereby reducing the thickness of the base. Reduce project cost, shorten construction period and extend service life.
2. Used for reinforced asphalt or cement pavement: Geogrid is laid on the bottom of asphalt or cement pavement, which can reduce rutting depth and prolong the fatigue life of the pavement. It can also reduce the thickness of asphalt or cement pavement to save costs.
3. Used to reinforce embankment dams and retaining walls: traditional embankments, especially high embankments, often need to be overfilled and the edges of the shoulders are not easy to compact, which will cause the slopes to be flooded by rain and collapse and lose stability. Occurred, 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 and extend the service life. , Reduce the cost by 20-50%. 4. Used to reinforce rivers and sea dikes: it can be made into stone cages and used together with grids to prevent the dam from being washed by sea water and cause collapse. The stone cages are permeable and can slow the impact of waves, prolong the life of the dam, save manpower and material resources, and shorten the construction period. .
5. Used to deal with garbage landfills: the combined use of geogrids and other soil composite materials to deal with garbage landfills can effectively solve the problems of uneven foundation settlement and derived gas emissions, and can maximize the storage of garbage landfills ability.
6. Special purpose: low temperature resistance. The low-temperature resistant geogrid of Liantuo Company, after repeated heating and cooling cycles at -45°C to 50°C for 200 times, all performance indicators meet the requirements, and have passed the test of the Qinghai-Tibet Railway, and are suitable for the northern frozen soil. , Frozen soil rich in ice, and permafrost with high ice content, poor geology.
Construction method of one-way geogrid:
Construction method of one-way geogrid:
When used on roadbeds and pavements, the construction method is the same as the two-way geogrid. When used for reinforced soil retaining walls, the construction methods are as follows: 1. Set up the foundation and carry out construction according to the designed wall system. When precast reinforced concrete panels are selected, they are generally supported on a precast concrete foundation with a thickness of 12-15 cm. The width is not more than 30cm, the thickness is not less than 20cm, and the buried depth is not less than 60cm to prevent the influence of frost heave of the foundation.
3. For laying of reinforcements, the main strength direction of the reinforcements should be perpendicular to the wall and fixed with pins. isD Feicheng Lianyi Engineering Plastics Co., Ltd.
4. The wall shall be filled with soil by mechanical filling, and the distance between the wheel and the reinforcement shall be kept at least 15 cm. After compaction, a layer of soil is about 20-15 cm thick. isD Feicheng Lianyi Engineering Plastics Co., Ltd.
5. During wall construction, geotextiles should be covered on the wall to prevent leakage of the fill.
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
