Geotextiles, made from polypropylene or polyester, are permeable fabrics used in soil stabilization since the 1970s, aiding in tasks like separation, filtration, reinforcement, and drainage. They come in woven, non-woven, and knitted forms, each serving distinct functions such as erosion control and improving bearing capacity in pavements. The document discusses various tests and applications to enhance soil strength and integrity using geotextiles.

1. Geotextile fo soil
stabilization
Geotextiles for soil stabilization 1
PRESENTED BY
AGLAIA

2. Introduction
• Geotextiles have been utilized in the construction of
reinforced soil walls since the early 1970’s.
• They are used to wrap compacted soil in layers producing a
stable composite structure.
• Geotextile-reinforced soil walls somewhat resemble the
popular sandbag walls which have been used for some
decades.
Geotextiles for soil stabilization 2

3. Geotextiles
• They are permeable fabrics which, when used in association
with soil, have the ability to separate, filter, reinforce, protect,
or drain.
• They are made from polypropylene or polyester
• geotextile fabrics come in three basic forms:
1. woven (resembling mail bag sacking)
2. needle punched (resembling felt),
3. heat bonded (resembling ironed felt).
Geotextiles for soil stabilization 3

4. • Geotextile composites have been introduced and products such
as geogrids and meshes have been developed.
• They are able to withstand many things, are durable, and are
able to soften a fall if someone falls down.
Geotextiles for soil stabilization 4
Fig.1 Geotextiles
(Source: Google images)

5. Types Of Geotextiles
Geotextiles for soil stabilization 5
Geotextiles are made up of polymers such as polyester or
polypropylene.
They are divided into 3 categories on the basis of the way they are
prepared;
Woven fabrics
Non-woven fabrics
Knitted fabrics

6. Woven Fabric Geotextile
• Commonly found geotextiles are of the woven type and are
manufactured by adopting the techniques which are similar to
weaving usual clothing textiles.
• This type has the characteristic appearance of two sets of parallel
threads or yarns.
• The yarn running along the length is called warp and the one
perpendicular is called weft.
Geotextiles for soil stabilization 6

7. Fig 2: Woven Geotextile
(Source: Google images)
Geotextiles for soil stabilization 7

8. Non-Woven Geotextile
• Non-woven geotextiles are manufactured from either continuous
filament yarn or short staple fiber.
• The bonding of fibers is done using thermal, chemical or mechanical
techniques or a combination of techniques.
Geotextiles for soil stabilization 8
Fig 3: Non-Woven Geotextile
(Source: Google images)

9. Knitted Geotextile
• They are manufactured by the process of interlocking a series
of loops of yarn together.
• They are formed by using the knitting technique in conjunction
with some other method of geosynthetics manufacture, such as
weaving.
Geotextiles for soil stabilization 9
Fig 4: Knitted Geotextile
(Source: Google images)

10. Functions Of Geotextiles
Geotextiles for soil stabilization 10
1. Filtration
2. Drainage
3. Séparation
4. Renforcement
5. Sealing

11. Fig:5 Condition of a pavement with and without geotextile
(Souce:http//:constructor.org)
Geotextiles for soil stabilization 11

12. Filtration
Geotextiles for soil stabilization 12
•It allows liquid flow with limited soil loss across the plane of
geotextile over a service lifetime.
Fig 6: Geotextile function-filtration
(Souce:http//:constructor.org)

13. Drainage/Transmissivity
Geotextiles for soil stabilization 13
• Ability of thick nonwoven geotextile whose 3D structure
provides an avenue for flow of water through the plane of the
geotextile
Fig 7: Geotextile function-Drainage
(Souce:http//:constructor.org)

14. Separation
Geotextiles for soil stabilization 14
•The introduction of a flexible porous textile placed between
dissimilar materials so that the integrity and functioning of both
the materials can remain intact or be improved.
Fig 8: Geotextile function-Separation
Source: Google images

15. Reinforcement
Geotextiles for soil stabilization 15
•Acts as a reinforcing element in a soil mass or in combination with
the soil to produce a composite that has improved strength and
deformation properties.
Fig 9: Geotextile function-Reinforcement
(Source: Google images)

16. Sealing
Geotextiles for soil stabilization 16
• The classic application of a geotextile as a liquid barrier is paved road
rehabilitation.
• It minimizes vertical flow of water into the pavement structure.
Fig 10: Geotextile function-Sealing
(Source: Google images)

17. Table:1 to determine which type and weight of geotextile is
best for each function.
(Souce:http//:constructor.org)
Geotextiles for soil stabilization 17

18. Erosion Control Applications
– Separation between different materials in order to maintain the
function and integrity.
– Reinforcement over soft soils and steep slopes
– Filtration to allow adequate liquid flow without soil loss
– Drainage via canals, dams, reservoirs and retaining walls
– Containment as a liquid or gas barrier
Geotextiles for soil stabilization 18

19. California Bearing Ratio Test
• The CBR is a semi empirical test that is often employed
in the estimation of the bearing capacity of sub grade
soils for design of pavement.
• It measures the resistance a soil mass offers to the
penetration of a plunger under specified density and
moisture conditions.
• The more difficult it is to penetrate the soil, the higher
the CBR rating.
• It can be clearly seen that due to the placement of non-
woven geotextile, the CBR values increases irrespective
of the placement depth.
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20. Table 2: Summary of the CBR values (Unsoaked condition)
Source:[1]
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21. Fig 11: CBR values for reinforced and unreinforced soil sample
Source:[1]
Geotextiles for soil stabilization 21

22. Compaction test
• This test was performed to establish the relationship between
the Optimum Moisture Content (O.M.C) and Maximum Dry
Density (M.D.D) of the soils for a specified compactive
effort.
• From this test we can calculate maximum amount of water
needed to enhance the strength or load-carrying capacity of
the soil.
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23. Fig 12: Dry density – Moisture content relationship of the soil
samples
Geotextiles for soil stabilization 23

24. References
• D.A. Ogundare , A.O. Familusi , A.B. Osunkunle And J.O.
Olusami (2018), “Utilization Of Geotextile For Soil Stabilization
”, American Journal of Engineering Research Department of Civil
Engineering, Federal Polytechnic Ede. Volume-7, Issue-8, pp-224-
231.
• S.K. Ghosh, R. Bhattacharyya, M.M. Mondal (2014) “A
Review On Jute Geotextile – Part 1” International Journal of
Research in Engineering and Technology.Department of Jute and
Fiber Technology, University of Calcutta, West Bengal, India
Geotextiles for soil stabilization 24

25. • Morgan, Roy P.C.; Rickson, R.J. (2011). “Slope Stabilization
and Erosion Control: A Bioengineering Approach”. London.
• WGBH Boston (December 1996). "Interview with Stacey
Loizeaux". NOVA Online. Public Broadcasting Service.
Retrieved 2009-04-29.
• Richards, Davi (2006). "Coir is sustainable alternative to peat
moss in the garden". Garden Hints. Corvallis, OR: Oregon State
University Extension Service. Retrieved 2013-03-06.
Geotextiles for soil stabilization 25

26. Thank you
For more…. Mail to aglaiaconnect2018@gmail.com