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There are several geosynthetic products available for this purpose, but geocells and geogrids see the most widespread application. You should learn about their distinctions and potential uses before settling on one.
Shape, flexibility, and load-bearing capacities are only a few of how geocells and geogrids diverge from one another. While geocells and geogrids both serve the purpose of ground and roadway support, geocells are more suited for soft subgrades. In addition to roads, driveways, and parking lots, retaining walls can also be built with geogrids.
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Differences Between Geocells and Geogrids:
Despite their shared classification as geosynthetics, geocells and geogrids have distinct structural and mechanical properties. Continue reading to learn more about the distinctions.
Shape:
In contrast to the typically two-dimensional geogrid, the geocell is a deep, three-dimensional mesh structure. Geocells can be interconnected to form a honeycomb pattern. Geogrids, as their name implies, are structured like a grid.
Limitation in Lateral Motion and Rigidity:
Due to their 2D structure, geogrids are more adaptable than geocells, making them useful whenever a top support or separator is required. A geogrid is a more rigid construction than a geocell and so has less room for adjustment.
Strength Under Pressure:
Geocells have higher load-bearing capacity due to its 3D structure and the vertical support of each cell. Over time, geocells are less likely to buckle under their own weight or sink into the subgrade. And you can use just about anything for the infill when working with geocells. Geogrids are limited in their infill potential because of their very flat design.
Which Uses Are Ideal for Each Product?
Geosynthetic products include things like geocells and geogrids. These man-made materials are commonly employed in civil engineering to prevent slope failure and soil erosion.
The high durability requirements of artificial earth-supported projects, systems, and structures make widespread usage of these items, which are primarily fabricated from polymers.
Earth-retaining and earth-supported structures, such as steep slopes and mechanically stabilized earth (MSE) retaining walls, are ideal applications for geogrids and geocells.
These constructions must last, bear either vertical or lateral pressure, and hold up other parts of the building.
How Do You Set Up Geocells and Geogrids?
After consulting with a geotechnical expert and following the manufacturer’s instructions, geocells and geogrids should be installed. Before a geosynthetic product can be installed, an engineer must make sure the subgrade and elevation are appropriate.
Keep reading to learn the ins and outs of putting in geocells and geogrids.
Setting Up Geocells:
The following materials are required for a successful geocell installation:
- Staking or holding the panels in place with anchoring pins.
- Panels can be locked together or stapled together.
- Engineer-determined quantity of geogrid or geocell panels.
- If you plan on using staples to affix the panels together, you’ll need a generator and a small compressor (100 PSI).
The process of deploying geocells entails the following steps:
Subgrade Preparation:
The need for subgrade preparation before geocell installation is evaluated during the course of the project. For instance, the subgrade could be fortified by pouring concrete into it. The success of the geocell installation depends on how well the subgrade has been prepared.
Putting up a Geotextile that Isn’t Knitted:
You can skip this if you’d like. A non-woven geotextile or geomembrane liner installation should be decided by an engineer.
Geotextiles are laid out over the ground and then staked down. The initial geotextile liner can be safeguarded by using a second one.
The panels will not be damaged by the soil because of the geomembrane liner that separates them from the panels.
Panel Enlargement:
To determine how many panels need to be expanded, it is recommended to first enlarge a single panel. This prevents wasted work later on.
While deciding how to extend the panels, keep the following in mind:
- Cover as much of the expansion as possible for optimal results.
- You can stretch the panels out using sandbags or a frame.
- Instead of using stakes, you can use clips to keep the panels in place.
- Once the panels have grown to their maximum length, gently pull on the edges to make sure they keep their rectangular shape.
Attending Hearings:
The installation time can be reduced if the panels are joined together before the area is expanded. Yet the larger the combined panel area, the larger the staff size must be. A pneumatic stapler and staples or locks can be used to attach the panels. For stapling, a compressor and a generator are required.
A pneumatic stapler and staples or locks can be used to attach the panels. To staple, you will need a compressor and a generator.
Panel Completion:
To dump a full load of fill material from trucks, you may need to construct a temporary dirt ramp. When a cell is empty, fill material is pushed upon it by an excavator.
Keep the bucket as close to the void cells as possible while you fill it. This reduces the height of the fall and prevents the panels from being cracked or dislodged. Once the cells are full, you can remove the stakes or sandbags and reuse them in other panels.
Filling up Spaces by Packing Dirt:
The fill material is compacted using a vibrating roller. Most big-box hardware and home improvement retailers will rent out compactors like this.
Conclusion:
While geocells and geogrids appear to be very distinct, they share very few properties. Hence, both serve the same functions. Which of these two items is ideal for your project can be determined by consulting with a geotechnical engineer. Considerations such as soil quality and the required load capacity of the reinforcement structure should guide the choice between the two.
Shape, flexibility, and load-bearing capacities are only a few of how geocells and geogrids diverge from one another. While geocells and geogrids both serve the purpose of ground and roadway support, geocells are more suited for soft subgrades. Retaining walls can also be built with geogrids.
