Applications
Road Construction
In roadway construction, needle-punched non-woven geotextile fabric functions as both a separation and filtration layer. It effectively prevents the intermixing of subgrade soil and aggregate layers, thereby inhibiting the upward migration of fine particles and small gravel. This enhances the structural integrity and longevity of the roadway by maintaining the designed layer composition and promoting proper drainage.
Road Maintenance
In road maintenance applications, needle-punched non-woven geotextile fabric serves as an effective pavement interlayer between existing and newly applied asphalt layers. This interlayer function significantly reduces the occurrence of reflective cracking by absorbing stresses and distributing them more evenly across the pavement structure. As a result, it enhances the durability and lifespan of the rehabilitated roadway.
Railway Embankment
In railway embankment construction, needle-punched non-woven geotextile serves a dual function by providing both tensile reinforcement and filtration. By allowing water to pass through while preventing soil particle migration, it enhances drainage and soil stability. Additionally, the tensile properties of the fabric contribute to improved load distribution and increased structural capacity of the embankment, thereby supporting long-term performance and resilience of the railway infrastructure.
Earth Retaining Structures
Needle-punched non-woven geotextile is used to stabilize earth walls through reinforced wrap-around techniques. By confining and reinforcing soil layers, the fabric enhances the overall structural integrity and stability of the retaining wall system. Its ability to resist tensile forces and maintain soil cohesion makes it an effective solution for constructing durable and secure earth retaining structures in both temporary and permanent applications.
Green Roof and Garden Application
Geotextile grow bags made from needle-punched non-woven fabric are ideally suited for use in rooftop gardens. The fabric functions as a separation and drainage layer, effectively filtering excess water while preventing soil migration. This promotes healthy root development, prevents waterlogging, and maintains structural separation between the soil medium and the drainage layer. Its durability and permeability make it an optimal choice for sustainable green roof systems and container gardening applications.
Foundation Stabilization
Needle-punched non-woven geotextile plays a critical role in stabilizing the base foundation of construction projects. By providing a stable separation layer between subgrade soil and structural fill materials, it enhances load distribution and prevents contamination of aggregate layers. In many cases, it can effectively replace traditional blinding layers, offering improved performance in terms of filtration, separation, and ease of installation. This contributes to a more efficient construction process and a longer-lasting foundation structure.
Drainage Systems
When used to wrap around drainage trenches, needle-punched non-woven geotextile fabric serves as an effective filtration barrier. It prevents fine soil particles from entering and clogging the drainage system, while still allowing water to pass through freely. This ensures long-term functionality and efficiency of subsurface drainage by maintaining consistent water flow and preventing sediment accumulation. The fabric’s permeability and durability make it an essential component in trench drain construction and other subsurface water management applications.
Landfill Applications
In landfill engineering, needle-punched non-woven geotextile serves as a crucial protective layer. It acts as a barrier that shields the underlying soil from contamination by leachate and simultaneously protects the geomembrane liner from mechanical damage caused by sharp objects or irregularities in the subgrade. By providing cushioning and filtration functions, the fabric enhances the integrity and longevity of the landfill containment system, ensuring compliance with environmental protection standards.
Artificial Lakes and Reservoirs
Non-woven geotextile fabric is extensively utilized in the construction and maintenance of artificial lakes and reservoirs to prevent leakage and control erosion. Acting as a protective layer, the fabric safeguards geomembranes or clay liners from punctures and mechanical damage caused by soil movement or debris. Additionally, it helps stabilize the surrounding soil, reducing erosion along the banks and ensuring the structural integrity and longevity of the water containment system.
Shoreline Management
Geotubes are utilized in shoreline management as an effective measure to protect coastal and riverine areas against erosion and flooding. These large, tubular geosynthetic containers are filled with sediment or sand, creating robust barriers that absorb wave energy and reduce the impact of water forces. By stabilizing shorelines and controlling sediment movement, geotubes help maintain the integrity of vulnerable coastal zones and mitigate flood risks.
Riverbank and Shoreline Protection
Erosion control along riverbanks and shorelines is effectively achieved through the use of geo-bags and cement concrete (CC) blocks. Geo-bags, filled with suitable materials, act as flexible, permeable barriers that absorb and dissipate the energy of flowing water, thereby reducing soil erosion. Complementing this, CC blocks provide a durable and stable structural reinforcement to protect vulnerable areas from further degradation. Together, these methods offer a comprehensive solution for maintaining the integrity of riverbanks and shorelines in both natural and engineered environments.
Geobag Deployment for Riverbank Erosion Control
The strategic placement of geobags, commonly referred to as geobag dumping, is employed as an effective measure to protect riverbanks from erosion. These geobags, typically filled with sand or other suitable materials, act as flexible, permeable barriers that absorb and reduce the impact of flowing water, thereby stabilizing the riverbank and preventing soil loss. This method offers a cost-effective and environmentally friendly solution for controlling erosion in vulnerable riverine areas.