This presentation is about Geotextile. We gathered every single detail about Geotextile and include here. So, it will be very helpful to them who wants to know or learn about Geotextile.

1. BGMEA University of Fashion & Technology

2. GeoTextile

3. Geotextiles are permeable fabrics which, when
used in association with soil, have the ability to
separate, filter, reinforce, protect, or drain.

4. • First applications of geotextiles woven industrial
fabrics were used in 1950’s.
• The first nonwoven Geotextile was developed in 1968
by the “Rhone Poulence” company in France.
• It was a comparatively thick needle-punched polyester,
which was used in dam construction in France during
1970.

5. • Generally Geotextile means Genetically Engineered
Organism Textile.
• It is made by polypropylene or polyester or
polyethylene, cotton and other natural fibers.
• The whole purpose of geotextile is functioning in
the field of filtration, drainage, soil erosion,
sedimentary control and reinforcement.

6. • Geotextile are formed by knitting and sewing the
fibers in the textile industry.
• It has vast utilization and very beneficial in the
filtration process.
• It provides high strength when they are made by
knitting and low strength when they are made by
sewing. Because it is sewed only ones.

7. • They are used to improve the performance and reduce
costs of virtually all civil engineering structures
including subsurface drains, roadways, railroads,
erosion control embankments, landfills, and retaining
wall systems.
• These are applicable to control the sedimentary in the
soil.
• They are applicable for filtration process in dust
collectors.

8. • They have strength to control reinforcement in the soil.
• It is able to control the drainage problem.
• They are also used in the erosion control.

9. Natural fibers:
1.Jute
2.Coir of coconut
3.Sisal
4.Palm leaf
5.Split bamboo
Synthetic fibers:
1.Polyester
2.Polyamides
3.Polypropylene
4.Polyethylene
Jute
Fiber
Coir Fibers
Polyethylene Fibers

10. There are 2 types of Geotextile:
Geotextile
Woven Non-Woven
Heat BondedNeedle Punched
Knitted

11. • Manufactured with high tensile strength and low
elongation.
• For filtration, low distribution extending life of paved
and unpaved roads.
• These can be of:
1. Woven monofilament
2. Woven multifilament
3. Woven slit film monofilament

12. • The knitting process consists of interconnecting loops of
yarn on powered automated machines. The machines are
equipped with rows of small, hooked needles to draw
formed yarn loops through previously formed loops.

13. • The fabric is designed to take force in two directions (0°
and 90°). For this can be used roving of glass, high
tenacity polyester, aramid or carbon as pillar threads and
weft threads. These fabrics are used for reinforced
composites.

14. • Design to filter soil particles from drainage systems and
stabilize road ways
• Increase performance life of these structures

15. • These can be of:
1. Non woven continuous filament heat bonded.
2. Non woven continuous filament needle punched.
3. Nonwoven staple needle punched .
4. Non woven resin bonded.
Heat Punched Needle Punched

16. • The material should be light, thick, cheap, strong and
flexible.
• The material should be rot resistance.
• The material should have good tensile, tearing, and
bursting strength.
• It must be permeable.
• It should be inert and U.V. resistant.
• It must be compatible with constructional material like
cement, clay, lime bricks, gravel, stones, etc.

17. Geo textile function can perform mainly in 2 ways,
hydraulic and mechanical function either simultaneous or
separately.
Mechanical Function:
• Protection
• Separation
• Reinforcement
Hydraulic Function:
• Drainage
• Filtration

18. • A geotextile, placed between two materials, performs the
protection function when it alleviates or distributes
stresses and strains transmitted to the material to be
protected against any damage.

19. • The protection can be waterproofing, dewatering etc.
• Waterproofing is specially used in roof gardening to
protect the roof from water leakage.
• Dewatering is normally used in making dam, canal or
bank protection and it is done by geotube.
Waterproofing
Dewatering

20. • Geotextile acts as a separator by preventing the intermixing of
coarse and fine soil materials allowing the free flow of water across
the same.

21. • Prevents upward pumping of soil.
• Maintains porosity at different levels.
• Eliminates the loss of costly aggregates into subsoil.

22. • A geotextile performs the reinforcement function by
improving the mechanical properties of a soil mass as a
result of its inclusion.

23. • When soil and geotextile reinforcement are combined,
a composite material, ‘reinforced soil’, possessing high
compressive and tensile strength (similar, in principle, to
the reinforced concrete) is produced.
• The geotextile acts as a tensioned member
coupled to the soil/fill material by friction, adhesion,
interlocking or confinement and thus maintains the
stability of the soil mass.

24. • The geotextile supports a planar load due to slide of the
soil over it.
• The geotextile supports a planar load due to its pullout
from the soil.
• The geotextile supports both a planar and a normal load
when placed on a deformable soil.

25. • Ground drains are put in place as a way of preventing or intercepting water flow.
It is a means of which to reduce a possibility of a rise in pore water pressure.
Often these drains are vertically sided trenches that are lined with a geotextile,
and then they are filled with coarse gravel. This generates a zone (in the soil
particles that remain) to bridge over the pores in the geotextile and retain smaller
particles. Thus, a natural graded filter is formed that will assist in preventing
additional washout of fine particles.

26. • Geotextile is a filter in that it permits the flow of liquids.
At the same time it prevents the passage of soil particles
which can cause settlement. The filtration opening size
(FOS) within the geotextile is chosen to aid against
blocking and clogging.

27. • Road
• Embankment
• Railroads
• Airfields
• Retaining structures
• Canal
• Damp
• Bank protection
• Costal engineering
• Building foundation improvement

28. • Geotextile filter, being permeable allows water to pass
through releasing water pressure but prevents soil
erosion.
• Working under water is much easier because the filter
system can be assembled above the water and lowered
into position with less time being used.
• Geotextile is easier to install either manually or
mechanically

29. • Very High cost
• It may delay seed germination due to reduction in soil
temperature.
• Plastic sheeting is easily vandalized, easily torn,
photodegradable and must be disposed of at a landfill.

30.  Most of the manufacturers of geotextile are from China
and from India. They captured a big market of geotextile
worldwide.
 Some manufacturer of Geotextile:
o Shandong Geosynthetics Co.Ltd (China)
o Dezhou Zhongrui Geo-Technical Material Engineering
Co. Ltd. (China)
o GSE LINING TECHNOLOGY CO. LTD (India)
o SHAKTI POLYWEAVE PVT.LTD. (India)

31. • Our country has already started to widely use geotextile
in many construction work.
• It used in many dam construction of coastal area of
Bangladesh and also used as bank protection in bank of
big river such as Padma, Meghna, Jamuna etc.
• Recently geotextile is used many construction work in
Dhaka city also such as canal construction of 300 fit
road, lake construction of Uttara, Dhaka city zone.