HDPE geo geocell is a kind of a mesh cell structure formed by reinforced HDPE from high-strength HDPE or PP copolymerized broadband through ultrasonic welding to a 3-dimensional network structure. As the cellular confinement system, the HDPE geocell is used to help improve the performance of standard construction materials and erosion control treatments. HDPE geocell is the three dimensional cellular confinement product which features lower cost, easy deployment, high strength and permeability. HDPE geo geocell generally adopts ultrasonic needle welding. Due to engineering needs, some holes are drilled in the diaphragm. The height of the strip is the height of the cell. When the electrolytic cell does not expand, the distance between adjacent welds on the same side of the same sheet is the welding distance. The HDPE geocell is flexible so that it can be folded when transported. The HDPE geocell product constitutes a structure with strong lateral restraint and huge rigidity when it is used to open and fill with soil or concrete materials. The HDPE geocell can be used as a cushion to treat soft foundations to increase the bearing capacity of the foundation, and can also be laid on the surface of the slope to form a slope protection structure, and it can also be used to build a support structure.
Product features of HDPE Geo Geocell
Geogrid and geocell are geosynthetic materials integral to civil engineering and construction. HDPE geocell has the characteristics of flexible expansion and contraction. It can be folded during transportation, and can be stretched into a network during construction, and filled with loose materials such as soil, gravel, concrete, etc., to form a structure with strong lateral restriction and large rigidity. The higher lateral restriction and anti-slip of the geocell can prevent deformation, effectively enhance the bearing capacity of the roadbed and disperse the load. In addition, the geocell is light-weight, wear-resistant, chemically stable, resistant to photooxidation, acid and alkali, and is suitable for different soils and deserts. Compared with Geogrid, Geocells is the ideal geosynthetic material for road construction, slope protection, erosion control and retaining wall and parking lots
Issues
Our Vietnamese customers found the contact information of our sales staff on our company’s official website, and gave our sales staff a phone call. After detailed communication, we knew the customer wanted to prevent the local mudslides and mudslides caused by the months of rainy season in Vietnam. They wanted a geosynthetic product that can build a stable and sustainable embankment environment from Landslides. We recommended the HDPE geo geocell product to our customers and sent a construction case of geocell-related materials. According to the drawings of the measurement construction site sent by the customer, it was determined that the geocell with a height of 110mm and a welding distance of 330mm was the best for the customer, and the construction area was determined to be 120,000 square meters after discussion with the customer. After confirming the geocell product and construction plan, the customer wanted to get samples. We immediately mailed a sample of ten square meters to the customer. After the customer received the samples, they affirmed our products and asked us to send PI. After the customer received it, we paid a 30% deposit, and we started production.
Da Nang has a tropical climate, with high temperatures and rain throughout the year. Because the rain water washes all the year round, it is easy to cause landslides on both sides of the river. Landslides often cause huge losses and some even devastating disasters to industrial and agricultural production and people’s lives and property.
The main hazards of landslides are the destruction of farmland, houses, damage to humans and livestock, destruction of forests, roads, agricultural machinery and water conservancy and hydropower facilities, etc., sometimes even causing devastating disasters to the villages, causing the accumulation of silt in Hanoi. The local government requires the contracting company to provide safety materials to solve the problem of maintaining the stability of the slopes on both sides of the river.
Main advantaMges of HDPE Geo Geocell for Slope Protection Project
(1) Ecological beauty. Water permeability and soil retention of HDPE geocell are better, which is conducive to vegetation growth. More than 98% of the open area has almost no engineering traces. The flexible structure adapts to and retains the natural shape of the terrain to the greatest extent. Form effective slope protection, and effective restraint structure for topsoil, vegetation, and granular materials such as sand, gravel, and larger rocks or stones. Compared with ordinary slopes, the slopes are allowed to be steeper (slope ≤63°) to reduce the occupation of valuable land space.
(2) Energy saving and environmental protection. Low-quality or local materials can be used as fillers, less concrete. The geo geocell filled with concrete can form a flexible concrete pad with built-in expansion joints. For steep slopes, or slopes that have geomembrane or hard soil/rock to prevent brazing, or slopes and embankments that cannot be brazed by loose gravel sand, the top of the slope can be anchored through the entire reinforced belt to provide additional stability.
(3) The geocell, upper and lower layers of soil, and non-woven geotextile are combined into a whole multi-layer protective structure through the root system of vegetation. To solve the problem of surface soil stability and slope protection, the geocell slope stability and protection system can isolate, strengthen and constrain the soil and filler above the slope, thereby controlling the downward movement and slippage of the slope caused by hydraulic and gravity .
(4) The flexible structure adapts to the settlement and deformation of the foundation, and the top-anchored geocell slope protection is suitable for long-term immersion and root erosion conditions.
(5) The geo geocell land retaining system solves the problem of soil stability on steep slopes. When the geocell system is stacked in layers, it can form an economical retaining wall that meets all the specific structural requirements of the project. The system is flexible in structure and gives people aesthetic enjoyment through the completely vegetation wall. The outer geocell exposes the horizontal terrace formed by the filling, which enables the vegetation to grow vigorously. The system can capture rainwater and control groundwater evaporation, creating a more natural environment for vegetation.
(6) Even in a soft soil environment, it can resist all loads generated by the mass and internal friction of the filler and maintain structural stability. When the foundation soil can be compressed or when construction is in difficult-to-access locations, it can adapt to site challenges. Reduce the occupation of valuable land space, and the slope stability is better.
Precautions for construction of HDPE geocells for slope protection
- Working surface. The flatness of the slope is related to the result of grass planting protection in the geocell. When the slope surface is uneven, the laying of the geocell is prone to stress concentration, which will cause the cell’s solder joints to crack and cause the cell to straddle and so on. Therefore, the slope must be leveled to the design requirements, and artificial slope repairs must be selected to remove pumice and dangerous rocks on the slope.
- The main drainage ditch system should be set up on the side slope of the paving cell, and the interval between two adjacent ditches is 4m. The drainage ditch is connected with the road side ditch, so that the road area flows along the side ditch into the drainage channel and enters the road edge. In order to avoid water in the road surface and prevent the cell slope from being washed away.
- Flatten the slope surface to remove some debris that is not conducive to the laying of the cell, so that the slope surface is flat and firm. You can also sprinkle a layer of high-quality soil first to facilitate the growth of plants.
- The cell should be laid from top to bottom in the main force direction, so that the cell sheet weight is perpendicular to the roadbed. It must not be laid horizontally.
- Open the geocell components, and nail a hook-shaped rivet pile at the top of each grid. The length of the rivet pile is required to be twice the height of the cell itself plus 30cm. Piles mainly play the role of opening the cell. The center and bottom of the bamboo and wood piles can also be used to stretch the cell. The top riveting pile mainly plays the role of hanging and riveting the cell. Better materials should be used. , Such as steel rods and so on.
- After the cell is opened and riveted, fill the cell space from top to bottom with high-quality soil suitable for cultivating turf or grass seeds. The filling should be 1.2 times the height of the cell, and be beaten to be firm and planted in time. On vegetation.
- When used on the lower slope of the highway, the drainage ditch should be connected with the shoulder retaining ditch to facilitate the drainage of road surface water, and the slope protection should not be washed. Make the water-blocking ditch at the height of the upper slope flow into the drainage ditch to prevent the accumulated water from directly scouring the slope protection. The upper slope should try to use a geocell with a higher height.
- After the construction is completed, re-inspection should be done. If the rivet piles are not fully tensioned and are not strong, they should be reworked in time until the turf or grass seeds are fully alive.
Key points of construction of HDPE geocell used in slope protection works
- The slope protection geocell should be covered during transportation to prevent long-term exposure and pollution;
- For the hot-melt welding of the slope protection geocell, it is necessary to do a process experiment before construction. Before the experiment, submit the experiment plan to the supervisor, and the experiment can be carried out after approval. The lap length is not less than 10cm, and the lap surface is not allowed to be pulled within 2h after welding;
- When the tensioned grid is laid flat on the slope surface to pave the geo geocell, start from the slope shoulder and open the bottom of the slope along the slope surface. The tensioning cell is placed flat on the slope, and the slot at the end of the cell is placed in the U-shaped anchoring groove;
- After the top is fixed, first fix the edges on the left and right sides of the stretched geo geocell grid, and then temporarily fix the bottom of its lower end with anchors. After filling the soil, pull out the anchor used for fixing the lower end;
- The expanded geocell needs to be a full diamond shape. It is strictly forbidden to trample or use heavy objects to cause the cell to deform;
- After the HDPE geocell has passed the inspection, carry out the filling and burial operation, fill the top first, bury the U-shaped anchor ditch at the top, and then fill and bury the buried pressure ditch at the bottom of the slope from top to bottom;
- Pave humus soil on the paved geo geocell within 12 hours for protection, or take other protective measures to prevent ultraviolet radiation from accelerating the aging of the honeycomb cell;
- After the overall burial, cover one-third of the height of the soil in the HDPE geocell;
- Paving is prohibited in rainy and snowy weather.
Specifications for HDPE Geo Geocell for Slope Protection Project of River Embankments in Vietnam
- Height – 100mm
- Welding distance -330mm
- Total Area – 120000 square meters
- Total of 60,000 limit caps are required for fixing
- Total of 5 large containers of 40HQ are required for transportation
About GEOSINCERE
As the professional geotextile and geosynthetics manufacturer and wholesaler, GEOSINCERE is always committed to geotextile research and development, manufacturing and installation services. We can provide our customers with most extensive lines of geotextiles and geomembranes for civil, mining, environmental and aquaculture engineering applications. GEOSINCERE has been keeping on investing in technological innovation, manufacturing facilities improvement and turnkey engineering abilities. Our extensive lines of geosynthetics products are well known for their ensured quality, high performance, excellent durability and best cost effectiveness. GEOSINCERE brand geotextiles and other geosynthetics products and solutions can meet your requirements by our solid technologies, innovative engineering solutions and excellent customer services. Hope to be your partner.
Our main innovative, high quality products include geotextiles, geomembranes, geogrids, geocells, geosynthetic clay Liner, and drainage boards, etc al. GEOSINCERE customers are from more than 100 countries including America, Australia, France, Sweden, UK, Turkey, Hong Kong, Hungary, New Zealand, Poland, Mexico, Ecuador, Brazil, Pakistan, Bangladesh, Thailand, Vietnam, Malaysia, Indonesia, Singapore, Philippines, Sri Lanka, India, UAE, Saudi Arabia, Qatar, Kenya, Ghana, Ethiopia, Somalia, Nigeria, South Africa, Swaziland, Mongolia, etc.
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