Nonwoven For Geotextile
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Industry Experience
Years of experience in designing and manufacturing nonwoven machinery, offering a deep understanding of the market and client needs.
Customization Capabilities
Ability to customize machinery to suit specific production requirements and output targets.
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Integration of cutting-edge technology to ensure high efficiency, productivity, and reliability in nonwoven production.
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Comprehensive after-sales support, including maintenance, repairs, and spare parts provision to ensure long-term operation.
What is Nonwoven For Geotextile?
Nonwoven geotextiles are a class of synthetic textiles engineered specifically for civil engineering and environmental applications. These materials are manufactured using fibers that are either spunbonded or needle-punched to create a web-like structure. Unlike traditional woven fabrics where threads cross at right angles, nonwoven geotextiles are composed of randomly oriented fibers that are bonded together mechanically, thermally, or chemically.
How To Use Nonwoven For Geotextile?
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.
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.
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.
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.
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.
Anti-Puncture
Combined with the geomembrane to become a composite waterproof and anti-seepage material, it plays the role of anti-puncture.
Drainage
A geotextile material can aid in collecting gas or water and transporting them along its plane, which offers a seamless transmission.
Moisture Barrier
Geotextiles can be used to block water by applying an asphaltic suspension. This makes the fabric impermeable and best for construction projects like pavement rehabilitation.
Reinforcement
Geotextiles can be used in reinforcement as a source of strength. They can be used in land reclamation, controlling water erosion, retaining walls, and steep slopes.
Stabilization
Geotextiles are often applied on top of a highly compressible material in stabilization. Usually, soft soil is the material. The geotextile lets water seep from the soil to the draining material, and therefore, merges the basement layer, strengthens it, making it a trustworthy base.
Separation
A geotextile is placed between two layers of different materials. This could be an old and new pavement, new construction and soil, or two soil types.
Uses Of Non-Woven Geotextile Fabric
Nonwoven geotextile fabric are made from either staple or continuous threads. For roads and railways off-shore land reclamation, road side, rail side, river and canal banks and embarkments, continuous filaments and staple fibers are used for separation, reinforcements, filtration, drainage, moisture barrier, etc. Geotextiles made of non-woven materials can perform a variety of special tasks, including as filtration, drainage, separation, strengthening, and erosion control.
Drainage
Geotextiles are used to transfer liquid or gaseous constituents passively. The geotextile alone performs the drainage tasks. However, it is frequently integrated with additional components like drainage cores and perforated pipes. To improve drainage capacity, needle-punched geotextiles are utilized in combination with other materials. Drainage geo-composites are the name given to this combination.
Separation
Two soil layers with differing particle size distributions are separated using nonwovens. It aids in avoiding the pumping up of fine-grained subgrade soils into permeable granular road bases. It stops a structure’s two neighboring layers from blending together. To guarantee the structure’s long-term performance, nonwoven separator is required.
Reinforcement
Geotextile is used in reinforcing to boost the ability of soft soils to support more weight. One frequent application in the realm of road engineering is reinforcement. The foundation soil’s level of stress can be decreased using nonwovens. because vertical loads can mobilize horizontal shear strains. By dispersing the load over a vast area, nonwoven fabrics help to lessen its intensity.
Filtration
To hold on to tiny soil particles, nonwoven materials are utilized. This method stops small particles from draining away and leaching. It was created in the middle of the 1960s and is most likely the method used in geotextiles most frequently.
Liquid Barrier
The nonwoven geotextiles’ open structure enables it to be saturated with clay particles, which fill the spaces inside the geotextile’s structure and prevent liquids from passing through.
Controlling Erosion
Nonwoven materials serve as both a drainage layer and a separator. However, when its primary purpose is to help reduce erosion, it is given a unique classification. The market for nonwoven geotextiles is substantially larger and includes soil erosion management.
What Types Of Non Woven Geotextile Fabric?
Needle-punched non-woven geotextile fabric
This fabric is made by mechanically interlocking fibers together using a series of barbed needles. It is strong, durable and ideal for applications that require high puncture and tear resistance.
Spunbond non-woven geotextile fabric
This fabric is made by bonding continuous filaments of polypropylene together using heat and pressure. It is lightweight, flexible, and has excellent filtration properties, making it an ideal choice for erosion control and drainage applications.
Meltblown non-woven geotextile fabric
This fabric is made by extruding molten polymer through small nozzles, which then solidify into microfibers. The microfibers are then randomly laid and bonded together to form a fabric with excellent filtration and separation properties.
Composite non-woven geotextile fabric
This fabric is made by combining two or more types of non-woven fabrics, such as needle-punched and spunbond fabrics, to create a fabric with enhanced properties. Composite fabrics offer a unique combination of strength, filtration, and drainage properties.
Application of Nonwoven For Geotextile
Road worksGeotextiles are frequently used in road construction. It adds tensile strength to the soil, thus strengthening it. The geotextiles must maintain their permeability while maintaining their separating functions since they are utilised as a quick dewatering layer in the roadbed.
Railway works
When the ground is unstable, woven or non-woven materials are employed to divide the soil from the subsoil without obstructing groundwater movement. Individual layers are encased in cloth to prevent them from swaying sideways due to shocks and vibrations from passing train
Agriculture
It’s used for mud control. Nonwoven fabrics are used to improve muddy roads and trails used by cattle or light traffic. They are folded by overlapping to hold a pipe or a mound of grit.
Water drainage
The use of geotextiles to filter soil and a more or less uniform granular material to convey water is increasingly being considered as a technically and practically feasible alternative to traditional methods. Geotextiles are used to filter drainage in earth dams, on roads and highways, in reservoirs, behind retaining walls, in deep drainage ditches, and in farming.
Coastal Works, Canals, and Rivers
Revertments and banks are protected by geotextiles from erosion caused by currents or lapping. When used with natural or artificial stone layers, they act as a filter.
Nonwoven For Geotextile Technical Specifications
|
Property |
Test Method |
Unit |
Minimum Average Roll Value (M.A.R.V.) |
|
Weight |
ASTM D5261 |
oz/yd² (g/m²) |
12 (407) |
|
Grab Tensile |
ASTM D4632 |
lbs (kN) |
300 (1.33) |
|
Grab Elongation |
ASTM D4632 |
% |
50 |
|
Trapezoid Tear Strength |
ASTM D4533 |
lbs (kN) |
115 (.511) |
|
CBR Puncture Resistance |
ASTM D6241 |
lbs (kN) |
850 (3.78) |
|
Permittivity |
ASTM D4491 |
sec-1 |
1 |
|
Water Flow |
ASTM D4491 |
gpm/ft² (l/min/m²) |
75 (3055) |
|
A.O.S |
ASTM D4751 |
U.S. Sieve (mm) |
100 (.150) |
|
UV Resistance |
ASTM D4355 |
%/hrs |
70/500 |
|
Roll Sizes |
12.5' W x 300' L (3,750 ft²/roll) |
||
Functions Of Nonwoven For Geotextile
Isolation refers to the use of Geotextiles to isolate building materials with different physical properties (such as soil and sand, sand and gravel, soil and concrete, etc.). So that there is no loss and mixing between two kinds of materials, the overall structure and function of materials are maintained, and the load bearing capacity of structures is strengthened.
Filtration when water flows from the fine material soil layer into the coarse material soil layer, the needle punched geotextile is used to make the water flow through, and effectively intercept soil particles, fine sand and small stones, so as to maintain the stability of water and soil engineering.
Drainage needle punched geotextile is a good water conducting material. It can form a drainage channel in the soil to discharge the excess liquid and gas in the soil structure.
For reinforcement, needle punched geotextile is used to enhance the tensile strength and deformation resistance of soil, increase the stability of building structure and improve the quality of soil.
The protection can effectively diffuse, transfer or decompose the concentrated stress to prevent the soil from being damaged by external forces.
The closed needle punched geotextile is matched with other materials (mainly asphalt or plastic film) to form an impermeable interlayer in the soil layer. (for highway resurfacing and repair, etc.)
Key Properties of Nonwoven For Geotextile
Raw Materials
Most non-wovens use polypropylene as the raw material which is cost-effective and provides required properties. High-end variants use polyester or a polypropylene-polyester blend.
Basis Weight
Basis weight is the mass per unit area measured in g/m2. Heavier basis weights produce stronger fabrics with higher puncture resistance. Typical range is from 20 g/m2 to 300 g/m2.
Thickness
Thickness depends on fiber density and varies from 1mm to 15mm. Affects permeability, cushioning ability and separation effectiveness.
Hydraulic Properties
Non-wovens have high water permeability (normal to the plane) and adequate transmissivity. Allows swift drainage while blocking soil passage.
Mechanical Properties
Tensile strength, tear strength, puncture resistance and burst strength are key mechanical properties. Non woven selection depends on the required load capacity.
Endurance Properties
Long-term resistance against environmental exposure, chemicals, microbes and mechanical stresses comes under endurance properties. Requires proper polymer choice.
Design and Installation Factors for Nonwoven For Geotextile
Site Preparation
The installation site must be graded uniformly and cleared of debris/rocks to avoid damage. Burial depth is determined. Subsurface drainage may be added.
Installation Techniques
Non wovens can be unrolled on site and placed loose or tense. Joints are sewn or bonded. Additional layers can be installed to enhance functioning. Fixings like sandbags or pegs may be used.
Seams and Overlaps
Adjoining rolls are overlapped for continuity. End overlaps depend on joint strength. Edges can be sewn, welded, glued or kept loose. Key consideration for soil retention uses.
Design Factors
Careful specifications of geotextile properties like strength, permeability, and opening size based on engineering requirements and testing. Survivability and performance lifetime also key.
Key Benefits and Advantages of Using Nonwoven For Geotextile
Cost-Effectiveness
Made from polypropylene, non-wovens are an affordable alternative to CMP pipe drains or graded aggregates for drainage. Limited overlap joints also reduce the quantity required.
Rapid Drainage Performance
The high porosity provides greater flow capacity compared to sand filters or gravel layers. Useful in applications like retaining walls.
Good Puncture and Burst Resistance
The entangled fibrous structure provides better resistance against punctures during installation compared to woven geotextiles.
Ease of Installation
Flexible, lightweight non-wovens are simpler to install in field conditions compared to rigid materials. No special equipment needed.
Enhanced Properties
Specialized manufacturing processes like calendering and bonding create improved non-wovens with the right balance of filtration, separation, cushioning and strength.
Wider Widths
The ability to produce up to 5m wide rolls compared to just 1m for wovens leads to faster deployment with fewer joints.
Certifications
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