What are the specific practical applications of filament-woven geotextiles?

Release date:

2016-08-15

Filament‑woven geotextile is composed of a nonwoven fabric layer laminated with a felt layer made of both animal and plant fibers. After decomposition, the plant fibers in the felt layer enhance the plant cells’ resistance to osmotic stress, while the animal keratin fibers release nitrogen, providing a sustained nutrient supply for plant growth. This eco‑friendly remediation product is designed to be installed beneath landscaped concrete paving units, promoting vegetation establishment and development.

　　Filament‑woven geotextiles are composed of a nonwoven fabric layer laminated with a felt layer made of both animal and plant fibers. After the plant fibers in the felt decompose, they enhance the plant cells’ resistance to water infiltration; meanwhile, the animal keratin fibers break down to provide a sustained supply of nitrogen for plant growth. This material is an eco‑restoration product designed to be laid beneath landscaped concrete paving units, thereby promoting vegetation establishment. As is well known, filament‑woven geotextiles exhibit excellent properties such as durability, aging resistance, and chemical corrosion resistance. In fact, their applications are quite diverse. Today, we will highlight the specific, practical uses of filament‑woven geotextiles.
　　1. Filament‑woven geotextiles can be used as reinforcement in the backfill of retaining walls or to anchor the wall’s facing panels. They are also employed in constructing wrapped‑type retaining walls and bridge abutments, reinforcing flexible pavements, repairing pavement cracks, preventing reflective cracking, enhancing the stability of granular slopes and reinforced earth structures, and mitigating soil erosion as well as frost damage to soils at low temperatures.
　　2. A separation layer between track ballast and the subgrade, or between the subgrade and a soft foundation; a separation layer between artificially filled soil, rock fill, or material stockpiles and the underlying ground; a separation layer between different permafrost layers; providing filtration and reinforcement functions. It also serves as a filter layer on the initial upstream face of ash‑storage dams or tailings dams, and as a filter layer in the drainage system within the backfill of retaining walls.
　　3. Vertical or horizontal drainage within earth dams, embedded in the soil mass to dissipate pore water pressures. Drainage behind impermeable geomembranes or beneath concrete facing layers in earth dams and embankments, as well as around tunnel perimeters, helps remove seepage water, thereby reducing external water pressure on linings and mitigating seepage around various structures. It is also used for drainage in artificial fill foundations and sports‑field subgrades.