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Geotextile in Road Construction: An Essential Component for Durable and Resilient Infrastructure
In the rapidly evolving field of road construction, geotextiles have emerged as a crucial element for ensuring the durability, stability, and resilience of road infrastructure. These high-performance materials, which are specifically designed for geotechnical applications, offer a range of benefits that have revolutionized traditional construction methods.
（filament-nonwoven-geotextile）
What Are Geotextiles?
Geotextiles are synthetic fabrics made from various materials, including polypropylene, polyester, and nylon. They are engineered to have specific physical properties that allow them to perform under demanding soil and environmental conditions. These fabrics are permeable, strong, and durable, making them ideal for use in a variety of applications, including road construction.
763138.webp "Composite-geotextile (3)763138.webp")
（Composite geotextile）
Applications in Road Construction
Separation and Filtration: Geotextiles are commonly used as separators between soil layers or between soil and other materials, such as aggregate bases. They prevent intermixing of materials while allowing water to pass through, maintaining proper drainage and reducing the potential for erosion.
Reinforcement and Stabilization: Geotextiles provide reinforcement to weak soil layers, increasing their load-bearing capacity. They can also be used to stabilize slopes and embankments, reducing the risk of failure due to shear forces or other geotechnical hazards.
Drainage: Geotextiles enhance drainage in roadbeds, preventing water accumulation that can lead to soil softening and pavement failure. They can be installed beneath or within the pavement layers to collect and redirect water to appropriate drainage systems.
Erosion Control: By preventing soil particles from being washed away by water, geotextiles play a crucial role in erosion control. They can be used in areas prone to erosion, such as slopes and stream banks, to protect the underlying soil and maintain the integrity of the road infrastructure.
（Staple fiber nonwoven geotextile）
Advantages of Using Geotextiles
Durability: Geotextiles are designed to withstand harsh environmental conditions and heavy loads, ensuring long-term performance.
Flexibility: These fabrics can be installed in a variety of configurations to meet specific engineering requirements.
Cost-Effectiveness: While the initial investment in geotextiles may be higher than traditional materials, their long-term benefits often lead to significant cost savings due to reduced maintenance and repair costs.
Environmental Benefits: Geotextiles help reduce the impact of road construction on the environment by minimizing soil erosion, improving drainage, and reducing the need for additional materials.
647795.webp "Filament-Woven-Geotextile (2)647795.webp")
（Filament Woven Geotextile）
Conclusion
In summary, geotextiles play an indispensable role in modern road construction. Their unique properties and applications allow for the creation of durable, stable, and resilient road infrastructure that can withstand the rigors of time and nature. As technology continues to advance, geotextiles are expected to become even more essential in the future of road construction.
Technical specification of filament spunbond needle punched non woven geotextile(GB/T17639-2008)
ITEM | Indicators | |||||||||
Nominal Tensile Strength/(kN/m) | 4.5 | 7.5 | 10 | 15 | 20 | 25 | 30 | 40 | 50 | |
1 | Longitudinal and Transverse Tensile Strength/(kN/m) ≥ | 4.5 | 7.5 | 10 | 15 | 20 | 25 | 30 | 40 | 50 |
2 | Elongation Corresponding to Longitudinal and Transverse Standard Strength/% | 40～80 | ||||||||
3 | CBR Burst Strength/kN ≥ | 0.8 | 1.6 | 1.9 | 2.9 | 3.9 | 5.3 | 6.4 | 7.9 | 8.5 |
4 | Longitudinal and Transverse Tear Strength/kN ≥ | 0.14 | 0.21 | 0.28 | 0.42 | 0.56 | 0.7 | 0.82 | 1.1 | 1.25 |
5 | Equivalent Aperture O30 (O35)/mm | 0.05～0.20 | ||||||||
6 | Vertical Permeability Coefficient/(cm/s) | KX(10-1～10-3) ：K=1.0～9.9 | ||||||||
7 | Thickness/mm ≥ | 0.8 | 1.2 | 1.6 | 2.2 | 2.8 | 3.4 | 4.2 | 5.5 | 6.8 |
8 | Width Deviation/% | —0.5 | ||||||||
9 | Mass Per Unit Area Deviation/% | -5 | ||||||||
Note 1: Specifications are determined based on tensile strength. If the actual specifications fall between adjacent specifications in the table, the corresponding assessment indicators shall be calculated using a linear interpolation method. In cases where the specifications exceed the range in the table, the assessment indicators shall be determined by mutual agreement between the supplier and the buyer. Note 2: When the actual tensile strength is lower than the standard strength, the elongation corresponding to the standard strength shall not be subject to compliance judgment. Note 3: The standard values for items 8 to 9 shall be determined according to the design or agreement. | ||||||||||
Indices for Plastic Flat Wire Woven Geotextiles（GBT 17690-1999）
I t e m | Value | |||||||
20-15 | 30-22 | 40-28 | 50-35 | 60-42 | 80-56 | 100-70 | ||
1 | Warp Tensile Strength，kN/m ≥ | 20 | 30 | 40 | 50 | 60 | 80 | 100 |
2 | Weft Tensile Strength kN/m ≥ | 15 | 22 | 28 | 35 | 42 | 56 | 70 |
3 | Warp and Weft Elongation at Break % ≤ | 28 | ||||||
4 | Trapezoid Tear Strength (Longitudinal Direction) kN≥ | 0.3 | 0.45 | 0.5 | 0.6 | 0.75 | 1.0 | 1.2 |
5 | Bursting Strength kN ≥ | 1.6 | 2.4 | 3.2 | 4.0 | 4.8 | 6.0 | 7.5 |
6 | Vertical Permeability Coefficient cm/s | 10-1～10~ | ||||||
7 | Equivalent Opening Size O95 ,mm | 0.08～0.5 | ||||||
8 | Mass per Unit Area g/m² | 120 | 160 | 200 | 240 | 280 | 340 | 400 |
Tolerable Deviation Value % | 士10 | |||||||
9 | UV Resistance Strength Retention Rate %≥ | According to design or contract requirements | ||||||
When users have specific requirements, the assessment shall be conducted based on the actual design values. | ||||||||
Technical Specifications for Short-Fiber Needled Nonwoven Geotextiles (GB/T 17638-2017)
I t e m | Nominal Breaking Strength/(kN/m) | |||||||||
3 | 5 | 8 | 10 | 15 | 20 | 25 | 30 | 40 | ||
1 | ≥Breaking strength(MD/CD)/(kN/m) | 3.0 | 5.0 | 8.0 | 10.0 | 15.0 | 20.0 | 25.0 | 30.0 | 40.0 |
2 | Nominal breaking strength/% | 20～100 | ||||||||
3 | Bursting Strength/kN | 0.6 | 1.0 | 1.4 | 1.8 | 2.5 | 3.2 | 4.0 | 5.5 | 7.0 |
4 | Deviation Rate of Mass per Unit Area/% | 土5 | ||||||||
5 | Deviation Rate of Width/% | —0.5 | ||||||||
6 | Deviation Rate of Thickness/% | 土10 | ||||||||
7 | Equivalent Opening Size O90(O95)/mm | 0.07～0.20 | ||||||||
8 | Vertical Permeability Coefficient/(cm/s) | K×(10-1～10-3) ：K=1.0～9.9 | ||||||||
9 | Tear Strength in Longitudinal and Transverse Directions/kN ≥ | 0.10 | 0.15 | 0.20 | 0.25 | 0.40 | 0.50 | 0.65 | 0.80 | 1.00 |
10 | Acid and Alkali Resistance (Strength Retention Rate)/% ≥ | 80 | ||||||||
11 | Oxidation Resistance (Strength Retention Rate)/% ≥ | 80 | ||||||||
12 | UV Resistance (Strength Retention Rate)/% | 80 | ||||||||
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Geotextiles Supplier
We are a geotextiles supplier in China and specialize in the production and export of a wide range of geotextiles, including both woven and non-woven varieties. Our comprehensive product line caters to diverse needs and applications, offering solutions for projects ranging from road construction to environmental protection. With a focus on quality, innovation, and customer satisfaction, we strive to deliver superior geotextiles that meet the highest standards of performance and durability. As a trusted supplier in the industry, we are dedicated to providing reliable products and exceptional service to clients worldwide. Welcome to contact us.
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