Geotextile Fabric Applications, Benefits, and Testing Methods

Geotextile fabric is a strong material that is used in road construction, erosion control, and farming for its filtration, separation, and stabilisation in soil structures. The quality of geotextiles is measured through ISO 136, ASTM D459, and GB/T15788 standards.

Understanding Geotextile Fabric

What is Geotextile Fabric?

Geotextile fabric is a permeable textile material that is made from strong fibers like polypropylene or polyester. It allows the water to pass through it, but prevents soil displacement.

The primary purpose of geotextile fabric is filtration, separation, and stabilisation in soil structures. It is very useful in construction and farming. For example, it is placed under a road to prevent gravel from sinking into soft soil. This makes the road stronger and longer-lasting.

In agriculture, geotextile fabric is used for better drainage and to reduce soil erosion around crops. In simple words, this fabric works as a filter and protector for soil. It makes land structure more durable, safe and sustainable.

Types of Geotextile Fabrics

There are two main types of geotextiles.

1. Woven
2. Non-Woven

Woven Geotextile

The woven geotextiles are made by weaving strong polypropylene yarns. These fabrics are firm and durable. It is used where high strength and reinforcement are required.

The high tensile strength of polypropylene yarn makes it ideal for reinforcement in highways, embankments, and retaining walls.

No-Woven Geotextile 

The non-woven geotextiles are produced by bonding fibers together using needle punching method. This creates a fabric with a felt-like texture that provides better permeability and filtration. It allows water to pass through it but stops the soil.

Due to this quality, non-woven geotextiles are mainly used for filtration and drainage. It is used in drainage trenches, landfills, and coastal protection projects.

In short, the woven geotextiles are used for strength, while non-woven geotextiles are used for water flow and filtration.

Applications of Geotextile Fabric

Geotextile fabric is an important material in civil engineering. It helps to make soil and construction projects stronger and extend their life. The primary purpose of geotextiles is to provide separation, filtration, reinforcement, and erosion control.

Use in Road Construction

In road construction, geotextile fabric is placed between soil and gravel layers. It prevents them from mixing, which ensures the gravel base remains stable. The stability of the gravel base layer is very important for road strength.

For example, in highways built on soft clay, the woven geotextiles help to distribute the vehicles evenly. It reduces the risk of road damage and the repair costs.

Geotextiles help to improve drainage. It stops water from collecting under the pavement. It helps to make the road stronger, safer and longer-lasting.

Use in Erosion Control 

Geotextiles are widely used for erosion control. Non-woven geotextiles are used on riverbanks, slopes, or coastlines. It allows water to pass through, but stops the soil from being washed away.

For example, in coastal protection, the geotextiles are placed under rocks to keep the sand in place. It prevents soil loss during tides. It also maintains slope stability, which protects nearby roads, buildings and other infrastructure from damage.

Geotextile fabrics protect soil from erosion and keep the land safe from water washouts.

Geotextile Testing Methods

Importance of Geotextile Testing 

Geotextile testing is essential because these fabrics are used in tough places, such as roads, landfills, dams, and coastal projects. The strength and durability of these fabrics are essential for the safety and longer run of highways and construction projects.

The purpose of geotextile testing is to ensure that the fabric can handle tensile loads, puncture, tearing, filtration, and bursting pressure. For example, on a highway, if the fabric quality is not tested, it might tear under the weight of heavy trucks.

The soil and gravel will mix, weakening the road’s strength. Similarly, in a landfill, if the geotextile quality is poor, it will break under the pressure of waste. Then it will cause dangerous leaks.

That is why ISO 136, ASTM D459, and GB/T15788 standards are used to ensure the quality of geotextiles. Testing ensures the safety, durability, and long service life of the structures where geotextiles are used.

DaRong Testers (YT010, YT030, YT040, YT050, YT060, YT070, YT080, YT090) 

Darong testers are advanced instruments that are designed to evaluate the geotextile’s performance.

• YT010

The ISO 136 Electronic Geotextile Strength Comprehensive Tester YT010-5000 determines the tear strength, tensile strength, bursting, peeling and joint strength of geosynthetics.

• YT030

The Geotextile Effective Aperture Tester YT030 measures the pore size in the geotextile fabrics. It works on the dry sieve method. The tester ensures that the geotextile will hold soil while allowing the water to pass through it freely.

• YT040

The Geotextile Dynamic Perforation Tester YT040 measures the strength of geotextile fabrics against impact damage. In this test, a steel cone is dropped from a fixed height onto the material. The tester measures the fabric’s resistance against puncturing by sharp objects.

• YT050

The Geotextile Wear Tester YT050 is used to determine the resistance of geotechnical materials against wear and surface damage. In this test, the material is rubbed repeatedly to see the material’s resistance against surface damage.

• YT060

The Geotextile Thickness Tester YT060 measures the thickness of geosynthetics. In this test, different pressures are applied to the material for a set amount of time. It helps to see how thickness changes under load.

• YT070

The Geomembrane Impermeability Tester YT070 measures how well geosynthetics can block water or liquid from passing through. It determines the waterproof performance of geotextiles.

• YT080

The Gradient Ratio Permeability Tester YT080A checks how well a geotextile works as a filter with soil. It measures the air permeability coefficient, permeability ratio and mud contents.

• YT090

The Drainage Board Horizontal Flow Tester YT090 determines how well geotextiles and plastic drainage boards carry water flow along their surface in the plane direction.

Conclusion

Geotextile fabric is a permeable textile material that is made from strong fibers like polypropylene or polyester. It allows the water to pass through it, but prevents soil displacement.

The ISO 136, ASTM D459, and GB/T15788 standards are used to ensure the quality of geotextiles. Testing ensures the safety, durability, and long service life of the structures where geotextiles are used.

FAQs

What is Geotextile Fabric made of?

It is made from synthetic polymers like polypropylene or polyester.

Where are Geotextiles used?

They are used in road construction, drainage, erosion control, and soil stabilisation.

What is the difference between woven and nonwoven Geotextiles?

Woven geotextiles provide reinforcement, while nonwoven types are better for filtration and drainage.

Which Darong tester is used for geotextile testing?

Darong tester YT010 determines the tensile, tear, puncture, permeability, and bursting strength of geotextiles.

Related Resources

ISO 136 Electronic Geotextile Strength Comprehensive Tester YT010-5000