Uniaxially – stretched plastic geogrid
Short Description:
- Uniaxially – stretched plastic geogrid is a kind of geosynthetic material. It uses high – molecular polymers (such as polypropylene or high – density polyethylene) as the main raw materials and also adds anti – ultraviolet, anti – aging and other additives. It is first extruded into a thin plate, then regular hole nets are punched on the thin plate, and finally it is longitudinally stretched. During the stretching process, the molecular chains of the high – molecular polymer are re – oriented from the original relatively disordered state, forming an oval – shaped network – like integral structure with evenly distributed and high – strength nodes.
- Uniaxially – stretched plastic geogrid is a kind of geosynthetic material. It uses high – molecular polymers (such as polypropylene or high – density polyethylene) as the main raw materials and also adds anti – ultraviolet, anti – aging and other additives. It is first extruded into a thin plate, then regular hole nets are punched on the thin plate, and finally it is longitudinally stretched. During the stretching process, the molecular chains of the high – molecular polymer are re – oriented from the original relatively disordered state, forming an oval – shaped network – like integral structure with evenly distributed and high – strength nodes.
Performance Characteristics
- High Strength and High Rigidity: The tensile strength can reach 100 - 200MPa, close to the level of low - carbon steel. It has quite high tensile strength and rigidity, which can effectively disperse and transfer the stress in the soil and improve the bearing capacity and stability of the soil mass.
- Excellent Creep Resistance: Under the action of long - term continuous load, the deformation (creep) tendency is very small, and the creep - resistance strength is much better than that of other geogrid materials of other materials, which plays an important role in increasing the service life of the project.
- Corrosion Resistance and Aging Resistance: Due to the use of high - molecular polymer materials, it has good chemical stability and corrosion resistance. It can be used for a long time under various harsh soil and climatic conditions without being easily aged or embrittled, which can extend the service life of the project.
- Convenient Construction and Cost - effectiveness: It is light - weight, easy to transport, cut and lay, and has a good fixing effect, which can reduce construction costs. At the same time, it has good bonding performance with soil or other building materials and is easy to combine with various civil - engineering structures to improve the overall performance and stability of the project.
- Good Seismic Resistance: The reinforced earth retaining structure is a flexible structure that can adapt to slight deformation of the foundation and effectively absorb seismic energy. It has seismic performance that rigid structures cannot match.
Application Areas
- Subgrade Reinforcement: It can quickly improve the bearing capacity of the foundation and control the development of settlement. It has a side - limiting effect on the road base, distributes the load to a wider sub - base, reduces the thickness of the base, reduces the project cost and extends the service life of the road.
- Pavement Reinforcement: Laid at the bottom of the asphalt or cement pavement layer, it can reduce the rut depth, extend the anti - fatigue life of the pavement, and also reduce the thickness of the asphalt or cement pavement, achieving the purpose of cost - saving.
- Dam and Retaining Wall Reinforcement: It can be used to reinforce the slopes of embankments and retaining walls, reduce the over - filling amount during embankment filling, make the edge of the shoulder easier to compact, reduce the risk of later slope collapse and instability, reduce the occupied area, extend the service life and reduce the cost.
- River and Sea Embankment Protection: When made into gabions and used together with geogrids, it can prevent the embankment from being scoured by seawater and causing collapse. The permeability of gabions can slow down the impact of waves and extend the life of the embankment, saving manpower and material resources and shortening the construction period.
- Landfill Treatment: Used in combination with other geosynthetic materials.
Product parameters
| Items | Index Parameters |
|---|---|
| Material | Polypropylene (PP) or High - Density Polyethylene (HDPE) |
| Tensile Strength (Longitudinal) | 20 kN/m - 200 kN/m |
| Elongation at Break (Longitudinal) | ≤10% - ≤15% |
| Width | 1m - 6m |
| Hole Shape | Long - oval |
| Hole Size (Long - axis) | 10mm - 50mm |
| Hole Size (Short - axis) | 5mm - 20mm |
| Mass per Unit Area | 200 g/m² - 1000 g/m² |
| Creep Rupture Strength (Longitudinal, 1000h) | ≥50% of Nominal Tensile Strength |
| UV Resistance (Retained Tensile Strength after 500h Aging) | ≥80% |
| Chemical Resistance | Resistant to common acids, alkalis and salts |
