Geotextile, also known as geotextile fabric, is a permeable geosynthetic material made of synthetic fibers by needle punching or weaving. Geotextile is one of the new geosynthetic materials. The finished product is cloth-like, with a general width of 4-6 meters and a length of 50-100 meters. Geotextiles have excellent filtration, drainage, isolation, reinforcement, and protection functions, and have the characteristics of lightweight, high tensile strength, good permeability, high-temperature resistance, freezing resistance, aging resistance, and corrosion resistance. There are many types of geotextiles. Short-filament geotextiles and filament geotextiles are two types of geotextiles. and non-woven geotextile or woven geotextile. Let’s take a look at the differences between short-filament geotextiles and filament geotextiles and short-filament geotextiles and filament geotextiles.
The difference between short filament geotextile and filament geotextile:
1. Appearance difference between short filament geotextile and filament geotextile
Omit appearance, filament geotextile, and short filament geotextiles are easy to distinguish. The surface fibers of filament geotextiles are longer and the color is much whiter than that of short filament geotextiles; Silk geotextiles are darker.
2. The difference between short-filament geotextiles and filament geotextiles
Filament geotextiles generally use filament spunbond needle-punched nonwovens made of polyester fibers. Compared with short filament geotextiles, the strength, elongation, bursting, and other parameters of the same specifications are superior. For short-filament geotextiles; short-filament geotextiles are generally made of polyester or polypropylene staple fibers needle-punched and coagulated, and the same specifications are different from filament geotextiles.
3. The difference between short-filament geotextiles and filament geotextiles
Filament geotextiles are thicker, can leave three-dimensional voids, and are helpful for some hydraulic functions, The puncture resistance of filament geotextile is better than that of polyester staple fiber geotextile. The creep resistance of polyester filament geotextiles with the same mass per unit area compared to polyester staple fiber geotextiles.
Short-filament geotextiles have very good strength, so they are definitely used in many projects, but what many people don’t know is that when short-filament geotextiles are first used, many times will leave certain hidden dangers. , through continuous research, the shortcomings in this area have been weakened a lot.
The role of short-filament geotextiles in engineering
1). Reinforcement and reinforcement: Reinforcement is generally divided into two types: macro-reinforcement and micro-reinforcement, while geotextile reinforcement belongs to the field of macro-reinforcement. The target is small, so it has certain limitations for reinforcement.
2). Filtration and drainage: The short-filament geotextile replaces the traditional material gravel layer infiltration and drainage. The drainage capacity of the geotextile is proportional to the thickness of the geotextile. Generally speaking, the thicker the thickness, the better the Drainage is better.
3. Barrier: Short-filament geotextiles can separate two materials with different particle sizes to ensure the stability of the structure, but the load that short-filament geotextiles can accept as a barrier layer cannot be too large.
4). Protection: Short-filament geotextiles are still used in protection projects, such as protection on slopes, urban greening, and prevention of road cracks.
The role of filament geotextiles in engineering:
1). Reverse filtration of dams and slope protection in water conservancy projects, isolation and seepage prevention of channels;
2. Foundation isolation, anti-filtration, drainage, soil slope, retaining wall and pavement reinforcement, and drainage of roads, railways, and airport runways;
3). Soft foundation treatment of port engineering, reinforcement, and drainage of beach embankments, harbor piers, and breakwaters;
4). The laying process stores, transports and handles geotextiles.
4. The difference between short-filament geotextiles and filament geotextiles
Filament geotextile application:
1). Reverse filtration of dams and slope protection in water conservancy projects, isolation and seepage prevention of channels;
2). Foundation isolation, anti-filtration, drainage, soil slope, retaining wall and road surface reinforcement, and drainage of roads, railways, and airport runways;
3). Soft foundation treatment of port engineering, reinforcement, and drainage of beach embankments, harbor piers, and breakwaters;
4). Polyester filament geotextiles have been used in the field of infrastructure construction and are being used in wider fields.
Short-filament geotextiles are made of short fibers that are laid out into a mesh through different equipment and processes. After acupuncture and other processes, different fibers are intertwined with each other, entangled, and fixed with each other to normalize the fabric, making the fabric soft, plump and thick. , Stiff, to meet the requirements of different thicknesses, non-woven geotextiles have good fabric gaps, good adhesion, and separation, due to the soft fiber, it has a certain tear resistance and good deformation adaptability, and at the same time It has good surface drainage ability, soft surface with many gaps, and good friction coefficient, which can increase the adhesion of soil particles, etc., can prevent fine particles from passing through, prevent the loss of particles and drop excess water, and the surface is soft and has good protection. ability. It can play a good role in filtering, isolation, reinforcement, protection, etc., is a used geosynthetics. The product has excellent properties such as acid and alkali resistance, corrosion resistance, aging resistance, high strength, stable size, and good filterability. The main function is the enhancement, isolation, anti-filtration, drainage of the project, and is used in water conservancy, highway, railway, and other fields.
5. The difference between the performance indicators of short filament geotextile and filament geotextile
Long-filament geotextiles are higher than short-filament geotextiles breaking strength and other indicators.
6. The price difference between short filament geotextile and filament geotextile
The price of products of the same specification is different, and the price of filament geotextile is generally higher than that of short filament geotextile of the same specification.
Yet, both filament geotextiles and short filament geotextiles play the role of reinforcement and protection in the project. The specific project should use filament geotextiles or short filament geotextiles or according to the specific conditions and design requirements of the project. . Refer to the following geotextile application areas, contact us, we will provide one-stop geomaterial solutions for your project or provide free geotextile samples!
Geotextile application field
(1) Used as reinforcement in backfilling of retaining walls, or as panels for anchoring retaining walls. Construction of wrapped retaining walls or abutments.
(2) Reinforce the flexible pavement, repair the cracks on the road, and prevent the pavement from reflecting cracks.
(3) Increase the stability of gravel slopes and reinforced soil to prevent soil erosion and freezing damage of soil at low temperatures.
(4) The isolation layer between the road ballast and the subgrade, or the isolation layer between the subgrade and the soft subgrade.
(5) The isolation layer between artificial fill, rockfill, or material field and foundation, and isolation between different permafrost layers. Anti-filtration and reinforcement.
(6) The filter layer of the upstream dam surface in the initial stage of the ash storage dam or tailings dam, and the filter layer of the drainage system in the backfill of the retaining wall.
(7) The filter layer around the drainage underdrain or around the gravel drainage underdrain.
(8) The filter layer of water wells, pressure relief wells, or oblique pipes in water conservancy projects.
(9) Geotextile isolation layer between roads, airports, railway tracks, and artificial rockfills and foundations.
(10) Vertical or horizontal drainage inside the earth dam, buried in the soil to dissipate pore water pressure.
(11) Drainage behind the anti-seepage geomembrane in earth dams or earth embankments or under the concrete cover.
(12) Drop the seepage around the tunnel, reduce the external water pressure on the lining, and seepage around the buildings.
(13) Drainage of artificial ground foundation sports ground.
(14) Roads (including temporary roads), railways, embankments, earth-rock dams, airports, sports fields, and other projects are used to strengthen weak foundations.
