HDPE Geo Geocell for Slope Protection Project of River Embankments in Vietnam

HDPE geocell, a mesh cell structure from high-strength HDPE or PP copolymer, is formed via ultrasonic welding into a 3D network. This process boosts construction material performance and effectively controls erosion. HDPE geocell is cost-effective, easy to deploy, strong, and permeable. This innovative product is crafted using ultrasonic needle welding. Some holes are drilled in the diaphragm as needed. The strip height precisely matches the cell height. Welding distance ensures structural integrity by maintaining a gap between adjacent welds on the same side. HDPE geocell’s flexibility allows for easy folding during transport. Once filled with soil or concrete, it provides robust lateral restraint and rigidity. It treats soft foundations, boosts bearing capacity, forms slope protection, and builds support structures.

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.Geocells offer a flexible solution for construction; they can be folded for easy transport and stretched into a network on-site. These cells are then filled with materials such as soil, gravel, or concrete to create robust structures. These structures boast significant lateral restriction and rigidity, effectively preventing any deformation. By enhancing the roadbed’s bearing capacity, geocells ensure efficient load dispersion. Moreover, geocells are lightweight and wear-resistant, maintaining chemical stability and resisting photooxidation, acid, and alkali. Suitable for various soil types and even deserts, geocells stand out. When compared to geogrids, geocells prove more advantageous for applications like road construction, slope protection, erosion control, retaining walls, and parking lots.

Main advantaMges of HDPE Geo Geocell for Slope Protection Project

(1) Ecological beauty.

HDPE geocell excels in water permeability and soil retention, fostering vegetation growth. Over 98% of its open area exhibits minimal engineering traces. Its flexible structure effectively maintains natural terrain shapes. It creates robust slope protection and a restraint system for topsoil, vegetation, and granular materials such as sand, gravel, and larger rocks or stones. Steeper slopes (≤63°) reduce land space occupation compared to ordinary slopes.

(2) Energy saving and environmental protection.

Low-quality materials effectively reduce concrete usage as fillers. Concrete-filled geocells form flexible pads with built-in expansion joints. On steep slopes or those with geomembrane, hard soil, or rock, anchoring the top enhances stability through the reinforced belt. This method is crucial for slopes and embankments unsuitable for brazing with loose gravel sand.

(3) Geocell Slope Stability and Protection System

The geocell, combined with soil layers and a non-woven geotextile, establishes a robust multi-layered protective structure anchored by vegetation roots. This innovative system effectively tackles surface soil stability and slope protection issues. It isolates, reinforces, and confines the soil and filler on the slope, thwarting downward movement and slippage driven by hydraulic and gravitational forces.

Moreover, this structure enhances slope integrity, ensuring optimal performance in challenging environmental conditions. The integration of these components creates a cohesive barrier that mitigates erosion risks. Additionally, it promotes healthy root growth, further stabilizing the slope. Ultimately, this multi-layer approach offers a comprehensive solution for maintaining slope stability and preventing soil degradation.

(4) Flexible Geocell Slope Protection

The flexible structure adapts well to foundation settling and deformation. Furthermore, top-anchored geocell slope protection excels in withstanding long-term immersion and resisting root erosion.

(5) Geocell Land Retaining System

The geocell land retaining system stabilizes soil on steep slopes. By stacking layers, it forms an economical retaining wall that meets project needs. The system is flexible and offers aesthetic appeal through a fully vegetated wall. The outer geocell showcases the horizontal terrace created by filling, encouraging robust vegetation growth. It captures rainwater and controls groundwater evaporation, fostering a natural environment for plants.

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The geocell land retaining system stabilizes soil on steep slopes effectively. Moreover, by stacking layers, it creates an economical retaining wall tailored to project requirements. Additionally, the system is flexible and provides aesthetic appeal through a fully vegetated wall. Furthermore, the outer geocell highlights the horizontal terrace formed by filling, promoting robust vegetation growth. Also, it captures rainwater and manages groundwater evaporation, thereby fostering a natural environment for plants.

Key points of construction of HDPE geocell used in slope protection works

Transportation of slope protection geocell must be covered to avoid exposure and pollution. Before hot-melt welding, a process experiment is required; submit the plan for approval. Ensure overlaps are at least 10cm and not disturbed within 2 hours post-welding. Lay the tensioned grid flat on the slope, starting from the shoulder, opening along the slope surface. Place the cell’s slot into the U-shaped anchoring groove. After securing the top, fix the sides first, then temporarily anchor the bottom until soil filling is complete. The expanded geocell should form a perfect diamond shape; avoid trampling or deforming it with heavy objects. Post-inspection of HDPE geocell, commence filling operations, starting from the top, covering the U-shaped anchor ditch, followed by the bottom pressure ditch in a top-down sequence.