What is a geotextile?
Geotextile, also known as geotextile fabric, is a permeable Geosynthetics made of synthetic fibers through needle punching or weaving. Geotextile is one of the new Geosynthetics. The finished product is textile-like, with a general width of 1-8 meters and a length of 50-100 meters. Geotextiles are divided into woven geotextiles and non-woven geotextiles.
What is a non-woven geotextile?
The specification of non-woven geotextile is selected between 100g/m2-1000g/m2, and it is composed of oriented or random fibers. The main raw material is polyester staple fiber or polypropylene staple fiber, which is made by the acupuncture method. Its main uses are slope protection of river, sea, and lake embankments, land reclamation, wharf, ship lock flood control and rescue projects, etc. An effective way to conserve water and soil and prevent piping. Non-woven fabrics have the characteristics of being moisture-proof, breathable, flexible, lightweight, non-combustible, easy to decompose, non-toxic and non-irritating, rich in color, low in price, and recyclable. For example, polypropylene (pp material) pellets are used as raw materials, which are produced by the continuous one-step process of high-temperature melting, spinning, laying, and hot-pressing coiling.
What is a woven geotextile?
Woven Geotextiles are a series of Geosynthetics formed to meet various characteristics and requirements of geotechnical engineering. Filament woven geotextiles are made of industrial filaments such as high-strength and high-modulus polyester filaments, polyamides, and polypropylenes. They have good physical and mechanical properties, oxidation resistance, and chemical stability. The tensile strength is as high as 2000Kn/m, and the width is 5.2 meters. Woven geotextiles are used in geotechnical engineerings such as rivers, coasts, harbors, roads, railways, docks, tunnels, and bridges. Can meet various purposes.
The woven geotextile utilizes the advantages of industrialization and the low cost of synthetic fibers; the characteristics of high strength, low elongation, durability, and corrosion resistance; the woven geotextile has the characteristics of stable structure and high engineering parameter compliance rate, which meets the requirements of various geotechnical projects. It is a kind of product with relatively high value in geotechnical engineering for different purposes such as filtration, isolation, reinforcement, and protection.
What are the differences between woven geotextiles and non-woven geotextiles?
According to different production processes, geotextiles can be divided into two types: woven geotextiles and non-woven geotextiles. These two geotextiles have certain differences in some aspects:
1. Differences in the production process
Non-woven geotextiles, also known as non-woven geotextiles, are made by interweaving filaments and short fibers through acupuncture and other production processes with the help of mechanical equipment; It is produced by interweaving at least two sets of yarns.
2. Performance difference
Due to the difference in the production process, the impact on the product performance is not the same. Although the non-woven geotextile has a good deformation effect, its deformation effect is not as good as that of the woven geotextile. The woven geotextile has a considerable tensile strength effect in the horizontal direction and has more practical characteristics in the reinforcement effect.
Application fields of non-woven geotextiles
Soft ground reinforcement
Landfill Filtration Drainage
sludge filtration
Embankment protection
Application fields of woven geotextiles
Subgrade Filtration Reinforcement
Load-bearing platform reinforcement
pile cap reinforcement
Soft foundation reinforcement
Which is better, woven geotextile or non-woven geotextile
Compared with woven geotextiles and non-woven geotextiles, both have their own advantages and disadvantages. You can choose a suitable geotextile according to the characteristics of your geotextile project:
1. Advantages and disadvantages of non-woven geotextiles
(1) Advantages: good ventilation, strong filterability, good heat preservation performance, water absorption, waterproof, good stretchability, not messy, good hand feeling, soft, light, elastic, recoverable, no directionality of fabric, high productivity, fast production speed, low price, mass production, etc.
(2) Disadvantages: poor strength and durability, cannot be cleaned, easy to crack from right angles, etc.
2. Advantages and disadvantages of spun geotextiles
(1) Advantages: high strength can maintain sufficient strength and elongation under dry and wet conditions; corrosion resistance, long-term corrosion resistance in soil and water with different pH; good water permeability, there are gaps between fibers, so Good water seepage performance; good antimicrobial property, no damage to microorganisms and moths; convenient construction; complete specifications.
(2) Disadvantages: Compared with non-woven geotextiles, the main disadvantage of woven geotextiles is that they do not have the function of filtering (that is, flat drainage), and the relative cost is higher.
In general, which one to choose between woven geotextiles and non-woven geotextiles depends on the needs of the project. For example, woven geotextiles are better than non-woven geotextiles in terms of reinforcement in geotechnical engineering.
How to use geotextile?
1: Isolation
Using polyester staple fiber needle-punched geotextiles for building materials with different physical properties (particle size, distribution, consistency, density, etc.)
materials (such as soil and sand, soil and concrete, etc.) for isolation. So that there is no loss or mixing between two or more materials, and the materials are kept
The structure and function of the material enhance the load-carrying capacity of the structure.
2: Filtration (reverse filtration)
When water flows from the fine material soil layer into the coarse material soil layer, the good air permeability and water permeability of polyester staple fiber needle-punched geotextiles are used to make the water flow
Pass through, and intercept soil particles, fine sand, small stones, etc., to maintain the stability of water and soil engineering.
3: Drain
Polyester staple fiber needle-punched geotextile has good water conductivity, it can form a drainage channel inside the soil and more
The remaining liquid and gas are discharged.
4: Reinforced
Using polyester staple fiber needle-punched geotextiles to enhance the tensile strength and deformation resistance of the soil and enhance the stability of the building structure to improve
Good soil quality.
5: Protection
When the water flow scours the soil, it can effectively diffuse, transmit or decompose the concentrated stress, prevent the soil from being damaged by external forces, and protect the soil.
6: Anti-Puncture
Combined with the geomembrane to become a composite waterproof and anti-seepage material, it plays the role of anti-puncture.
High tensile strength, good permeability, air permeability, high-temperature resistance, freezing resistance, aging resistance, corrosion resistance, and no insects.
Polyester staple fiber needle-punched geotextile is a widely used geosynthetic material. used in the reinforcement of railway embankments, highway pavement
Maintenance of sports halls, protection of dams, isolation of hydraulic structures, tunnels, coastal tidal flats, reclamation, environmental protection, and other projects.
In summary, woven geotextiles are more durable than non-woven geotextiles. However, if you are troubled by a large amount of water accumulation, non-woven geotextiles are a very good solution. It is worth mentioning that besides being a perfect drainage solution, nonwovens also have excellent strength and durability, so they can still be used in many applications such as roads, airports, retaining walls, landfills, mining, etc. Contact us if you are looking for woven and nonwoven geotextiles for your landscaping or construction projects. We can provide you with geotextile samples for free. 24 hours online to serve you!
