Geotextiles are technical textiles designed for use in civil engineering projects to provide separation, filtration, reinforcement, protection or drainage. There are two main types - woven and nonwoven. Woven geotextiles are strong, UV resistant and prevent biological degradation. Nonwoven geotextiles are ideal for roads, buildings and landfills. Geotextiles perform basic functions like filtration, separation, reinforcement and drainage. They are used in applications such as roads, bridges, dams and retaining walls to improve soil strength at a lower cost than traditional methods. Geotextiles can also replace hydroseeding on slopes prone to erosion.

1. Geotextiles
BY:
Karamat ali saif

2. Geotextile
Geotextiles are technical textiles designed for
use in association with soil and for various civil
engineering purposes serving the need for
separation, filtration, reinforcement, protecting
or drainage
Permeable fabrics which, when used in
association with soil, have the ability to
separate, filter, reinforce, protect, or drain.

3. Types of Geotextiles
 Woven geotextiles
Advantages:
 High in Strength
 UV Resistant
 Rot Resistant
 Resists Biological Degradation
 Chemically Inert
 Increases the Life of Roads

4.  Non woven geotextiles
A non woven geotssextiles is ideal for use with
roads, roofs, rail roads, ponds, dams, trenches
and landfills
Advantages:
• 100% Propylene Staple Fibers
• Needle-Punched
• UV Resistant
• Rot Resistant
• Biological Degradation Resistant
There are two types
Needle punched ( looks like felt)
Heat bonded ( looks like ironed felt)

5. BASIC FUNCTIONS
Filtration
 Separation
 Reinforcement
 drainage
•Filtration:
Geotextiles act as filters between soil and
drainage gravel, preventing soil particles from
being carried away by the filtered water.

6. • Separation:
Separation refers to the ability of geotextiles to
prevent the mixing of two materials, such as a soft sub
grade with a clean base aggregate
• Reinforcement:
Soil movement is reduced by the confinement and
reinforcing action of geotextiles, which function by
absorbing part of the stress that normally would cause
shear failure
• Drainage:
The lengthwise permeability of the geotextiles
allows it to perform as a drain. The amount of
drainage is proportional to the thickness of the fabric

7.  Civil engineering applications including
roads, airfields, railroads, embankments,
retaining structures, reservoirs, canals,
dams, bank protection use Geotextiles as raw
materials.
 Geotextiles can improve soil strength at a
lower cost than conventional soil nailing.
Application in Civil Engineering.

8. Geotextile in Bridges :
 Transfers loads from metal arch to surrounding GRS
mass
 No need for concrete footings or pile foundations
 Light weight and ships economically to site
 Low maintenance costs

9. Geotextiles replacing Hydroseeding
Hydroseeding is a process of planting grass that
is fast, efficient and economical on sloppy
surfaces where soil erosion is a major problem.
Geotextiles are superior than hydroseeding
• when the growing season is short and plants
cannot stabilize the slope quickly,
• At high altitudes
• where major storms are a frequent occurrence.

10. Thank
you