What Is Geotextiles?
Geotextiles are synthetic or natural textile materials used in civil engineering applications to improve soil stability, drainage, filtration, and erosion control. They have become an essential component in many civil engineering projects due to their versatility and effectiveness in enhancing soil properties. Geotextiles are available in different types, including woven, non-woven, and knitted, each with its unique characteristics and properties.
They have a wide range of applications in road construction, embankment reinforcement, erosion control, landfill lining, and retaining wall construction, among others. In this article, we will explore different types of geotextiles with their applications, characteristics, advantages, and disadvantages of geotextiles, helping you understand how they can benefit your civil engineering projects.
Types of Geotextiles
There are various types of geotextiles are made from polymers such as polypropylene and polyester. They are divided into three categories according to their manufacturing process:
1. Woven Fabric Geotextiles
Woven fabric geotextiles are the most common, and their manufacturing technology is similar to that of clothing fabrics. This type of geotextile is made from parallel threads or two sets of threads.
2. Nonwoven Fabric
Nonwoven geotextiles are made of continuous yarn fibers or short-staple fibers. They relate to thermal, chemical, or mechanical approaches or a combination of techniques.
3. Knitted Fabric
Knitted geotextiles are made by interlocking a series of yarn rounds together. These geosynthetics are created by combining the weaving approach with other techniques such as weaving.
Application of Geotextile
The following are the major geotextile applications,
Uses of Geotextile In Construction
The scope of geotextiles in the engineering field is indeed huge. The use of geo fabric is given under the heading Nature of Work.
Geotextiles are commonly used in road construction. It strengthens the soil by adding tensile strength. It is used as a rapid water level in roadbeds, geo-textiles fabrics need to preserve their permeability without losing their individual functions.
Woven or non-woven fabrics are used to separate the soil from the sub-soil where the ground is unstable, without impeding the rotation of the groundwater.
Covering the individual layers with fabric prevents the material from straying from the edge due to shocks and vibrations from moving trains.
It is used for sludge control. To enhance muddy paths and trails used by cattle or light traffic, non-woven fabrics are used and folded by overlaying to contain a mass of pipe or grit.
The use of geotextiles for soil filtration and more or less single-sized granular materials to transport water is seen as a technically and commercially feasible alternative to conventional systems.
Geofabrics perform the filtering process in earth dams, roads and highways, reservoirs, retaining walls, deep drainage ditches, and drainage in agriculture.
River, Canals, and Coastal Works
Geotextiles cover river banks from erosion caused by currents or lapping. When used in convergence with natural or artificial encapsulation, they act as a filter.
Properties of Geotextiles
The following are properties of geotextile,
- Specific Gravity
- Tensile Strength
- Bursting Strength
- Tearing Strength
- Frictional Resistance
- Turbidity or Soil retention
- Filtration Length
- Hydrolytic degradation
- Chemical Degradation
- Mechanical Degradation
- Another Degradation occurs due to attacks of termites, rodents, etc.
- Abrasion Resistance
- Clogging Length and Flow
Advantages of Geotextiles
- They are light in weight which makes them easy to handle and place.
- The transportation and labor cost is less in real terms.
- Knitted fabrics have high incision strength.
Disadvantages of Geotextiles
- Installation of geotextiles is critical and requires specialist contractors.
- These can delay seed germination due to low soil temperature.
- It has maximum flow rates.
- The base is not suitable for traffic areas.
You May Also Like
- What Is Soil Stabilization | Soil Stabilization Methods | Types of Soil Stabilization
- Black Cotton Soil | Black Cotton Soil Properties | Types of Foundation In Black Cotton Soil
- 14 Types of Compaction Equipment used in Construction
- SPT Test | Standard Penetration Test | Soil Penetration Test
- Floating Slab | Float Slab Foundation | Floating Concrete Slabs
- SBC of Soil | Safe Bearing Capacity of Soil | Minimum SBC of Soil for Construction