Fiberglass composite geotextile is a material reinforced with glass fibers, combined with short-fiber needle-punched non-woven fabric.

Fiberglass composite geotextile differs from ordinary woven fabrics. Its most significant feature is that the intersections of warp and weft threads do not bend, remaining in a straight state. Binding threads securely tie them together, ensuring uniform and synchronous stress distribution under external forces. When an external force attempts to tear the material, the yarns gather along the initial tear, increasing tear resistance.

During warp-knitting composite processing, warp-knitting binding threads repeatedly pass through the warp, weft, and the fiber layer of short-fiber needle-punched geotextile, weaving the three into one. Thus, warp-knitted composite geotextile combines high tensile strength and low elongation with the properties of needle-punched non-woven fabric. As a result, it is a multifunctional geocomposite suitable for reinforcement, isolation, protection, and effective water retention and diversion in both vertical and horizontal directions. Its solid matrix and pores form a continuous phase, creating a porous filtration effect.

(II) Product Characteristics

High tensile strength, low elongation, uniform deformation in both longitudinal and transverse directions, high tear resistance, excellent abrasion resistance, high permeability, and strong filtration capability.

(III) Main Functions of Warp-Knitted Composite Geotextile

Reinforcement, drainage, filtration, protection, isolation

(1) Reinforcement and stabilization: It transfers or distributes localized stress on the soil over a larger area, stabilizing and limiting deformation and settlement in geotechnical engineering over long-term use.

(2) Isolation function: Geotextile isolates different geotechnical structural materials to form a stable interface, allowing each to perform according to design specifications and function as a whole.

(3) Protective function: Geotextile has excellent puncture resistance, providing strong protective performance.

(4) Drainage and filtration function: Geotextile allows water to pass while preventing the loss of sand and soil particles. It is placed across channels with suspended particles in flowing liquids to block fine silt particles while permitting liquid passage.

(IV) Engineering Applications of Warp-Knitted Composite Geotextile

1. Used for filtration protection in retaining walls, road slopes, reservoir dams, earth-rock cofferdams, tunnels, and drainage ditches.

2. Applied for drainage in road slopes, roadbeds, back mountain retaining walls along mountain roads, lower layers of railway ballast, and between highway subgrades and pavements.

3. Utilized for isolation between soft soil and rocks in construction cofferdams, docks, and breakwaters; isolation protection between the base and impermeable layers in landfills; separation between filter materials and waste in landfills; and isolation and pavement reinforcement between asphalt surfaces and roadbeds.

4. Employed for layered reinforcement and drainage in slopes of roads and railways, as well as drainage reinforcement in backfilled subgrades and dams.

5. Used for protecting impermeable layers in anti-seepage projects such as artificial lakes, rivers, and reservoirs.

6. Applied for isolation between base layers and planting layers in landscaping projects.

7. Utilized for drainage in soft foundations and reinforcing subgrades to enhance bearing capacity.