GEOBAG

FUNCTIONS OF GEOBAG

As a flexible structural element, a geobag is used to:

• dampen wave energy,
• prevent coastal erosion,
• stabilize landslide-prone slopes, and
• protect the soil surface from scouring by water currents without harming the surrounding ecosystem.

ADVANTAGES OF GEOBAG

Compared with conventional structures such as solid concrete or stacked river stone (gabions), geobags offer several advantages:

• Environmentally Friendly: The geotextile blends in with nature and allows vegetation to grow between the bags over time, so the landscape stays attractive.
• Flexible and Adaptive: As flexible bags, geobags can follow ground movement or settlement underneath without cracking or breaking like rigid (concrete) structures.
• Cost-Efficient and Easy to Install: Geobags can be filled directly with local material from around the project site (such as local sand), saving the cost of hauling material in. Installation is also relatively fast and does not require large heavy equipment.
• UV and Chemical Resistant: High-quality geobags usually contain anti-UV additives and resist biological and chemical degradation in both freshwater and saltwater environments.

GEOBAG APPLICATIONS

Thanks to their flexibility and durability, geobags are widely used in many construction projects, including:

• Coastal Erosion Control & Wave Protection (Breakwaters/Seawalls): Geobags are often placed along the shoreline to break wave energy, prevent erosion and protect the land from the sea.
• River Normalization and Riverbank Protection: Used to reinforce riverbanks so they are not easily eroded by strong currents, especially on landslide-prone river bends.
• Emergency Flood Defense: Because they are easy to fill and quick to install at disaster sites, geobags are often used as emergency levees to hold back floodwater.
• Land Reclamation and Artificial Islands: Used as perimeter bunds or containment walls for sand filling in shallow waters.
• Slope Stabilization & Roadside Landslides: Used on highway projects or steep slopes to hold back falling landslide material.

TYPES OF GEOBAG

Geobag material generally falls into two main types, which are often combined or chosen according to the specific needs of the project:

• Woven Geotextile: Made from synthetic polypropylene (PP) or polyester (PET) fibers woven to give very high tensile strength. The woven type is ideal for withstanding heavy loads, high pressure and mechanical pulling on site.
• Non-Woven Geotextile: Made from synthetic polypropylene (PP) or polyester (PET) fibers bonded mechanically (through a needle punch process) or thermally. The non-woven type has excellent permeability and filtration, and absorbs wave impact more flexibly.

GEOBAG SPECIFICATIONS

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