Geobags, also known as geotextile bags or sandbags, are woven polypropylene containers filled with sand, soil or concrete that provide rapid and cost-effective protection against erosion, flooding and slope failure. They are widely used in riverbank reinforcement, coastal protection, slope stabilization and emergency flood control across Southeast Asia, Africa and the Middle East.
Synhens manufactures high-strength woven geobags from UV-stabilized polypropylene fabric, designed to withstand harsh outdoor conditions for 5-20 years depending on the application. Our geobags are available in custom sizes and weights to meet specific project requirements.
Riverbank erosion is a major concern in tropical regions with heavy seasonal rainfall. Geobags placed along river banks create a flexible revetment that absorbs wave energy and prevents soil loss. Unlike rigid concrete structures, geobags conform to the natural riverbed shape and can be installed without heavy machinery.
Coastal erosion threatens communities and infrastructure worldwide. Geobags serve as breakwaters and shoreline barriers that reduce wave impact and prevent beach erosion. They are particularly effective in island nations like the Philippines and Indonesia where coastal protection is critical.
Steep slopes along highways, railways and hillsides are prone to landslides during heavy rain. Geobags provide immediate reinforcement by adding weight and friction to the slope surface. Combined with 3D vegetation nets and geogrids, they create a permanent stabilization system.
During flood emergencies, geobags can be rapidly deployed to build temporary levees, diversion walls and flood barriers. Their lightweight design allows quick transport and placement, while the woven fabric ensures structural integrity even when saturated with water.
In land reclamation projects, geobags filled with dredged material create containment structures for new land areas. Geotextile tubes (a larger variant) are used for sludge dewatering in mining, wastewater treatment and port construction.
| Property | Value |
|---|---|
| Material | Woven Polypropylene (PP) / UV Stabilized |
| Weight Range | 100-300 g/m² fabric |
| Bag Size | Custom (common: 60x90cm, 90x130cm, 100x180cm) |
| Tensile Strength | 20-80 kN/m (depending on fabric weight) |
| UV Resistance | 5-20 years (depending on exposure) |
| Fill Material | Sand, soil, gravel, concrete mix |
| Color | White, Black, Green (custom available) |
| Standard | ASTM D4595 / GB/T 17638 |
Proper installation ensures maximum performance and longevity:
| Feature | Geobags | Concrete Riprap | Traditional Sandbags |
|---|---|---|---|
| Cost | Low | High | Moderate |
| Installation Speed | Fast | Slow (needs curing) | Fast |
| Flexibility | High (adapts to movement) | Low (rigid, cracks) | Moderate |
| Vegetation Support | Excellent | Poor | Poor |
| Environmental Impact | Low | High | Moderate |
| Durability | 5-20 years | 20+ years | 1-3 years |
| Transport | Easy (lightweight) | Difficult (heavy) | Easy |
Planning a slope protection or flood control project? Request a free geobag quotation from Synhens. Our technical team will help you select the right specifications for your site conditions and budget.
