2. CONTENTS
1. INTRODUCTION
2. MATERIALS USED IN GEOTEXTILES
3. PROPERTIES OF GEOTEXTILES
4. TYPES OF GEOTEXTILES
5. APPLICATION OF GEOTEXTILES
6. ADVANTAGES AND DISADVANTAGES OF GEOTEXTILES
7. CONCLUSION
REFERENCES.
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3. INTRODUCTION
The geotextiles defines as a “Fabric or synthetic material
placed between the soil and a pipe, gabion, or retaining wall (to
enhance water movement and retard soil movement) and as a
blanket to add reinforcement and separation”
Permeable geosynthetics comprised solely of textiles,
geotextiles are used with foundation, soil, rock or any other
geosynthetical engineering related material as an integral part 3
4. MATERIALS USED IN GEOTEXTILES
Geotextiles are made from polypropylene, polyester, polyethylene,
polyamide (nylon), polyvinylidene chloride, and fiberglass
Polypropylene and polyester are most used
Yarns are formed from fibers which have been bundled and twisted
together, a process also referred as spinning
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7. WOVEN TYPE
Based on their manufacture
they can be sub divided into
several categories
These were the first to be
developed from the synthetic
fibers
TYPES OF GEOTEXTILES
WOVEN TYPE GEOTEXTILE
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8. 8
From adopting techniques which are similar to weaving
usual clothing textiles
The majority of geotextiles are manufactured from
polypropylene
9. NON-WOVEN TYPE
Non-woven type can be manufactured
from either stable fibers or continuous
filament yarn
The fibers can be bonded together by
adopting thermal, chemical or mechanical
technique
These are manufactured through a process
of mechanical interlocking or chemical or
thermal bonding of fibers
NON-WOVEN TYPE GEOTEXTILE
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10. 10
The opening size of thermally loaded geotextiles are of
about a thickness of 0.5-1mm
Chemically loaded are of size of about 3mm
And mechanically bonded are of size about 2-5mm
11. KNITTED TYPE
Knitted types are manufactured
using process which is adopted
from the clothing textile
industry namely that of knitting
In this process interlocking a
series of a loops of yarn
together is made
KNITTED TYPE GEOTEXTILE
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12. APPLICATION
Roadways, parking lots, and
construction sites
River canals & coastal works
Filtration
Drainage
Reinforcement
protection
Separation
Railway work
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13. ROAD WORKS
To allow rapid dewatering of the
road bed the geotextiles need to
preserve its permeability without
losting its separating functions
Its filtration characteristics must
not be significantly altered by the
mechanical loading 13
ROAD WORKS
15. RIVER CANALS & COASTAL WORKS
Geo textiles protect river
banks from erosion due to
currents or lapping
When used in conjunction
with natural or artificial
enrockments, they act as a
filter, for erosion prevention
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RIVER CANAL
16. AGRICULTURE
It is used for mud control. For the
improvement of muddy paths and
trails those used by cattle or light
traffic
nonwoven fabrics are used and are
folded by overlapping to include the
pipe or a mass of grit
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AGRICULTURE
17. FILTRATION
These are an ideal interface for
reverse filtration in the soil
adjacent to the geotextile
In all soils water allows fine
particles to be moved
Part of these will be halted and
rest will pass into the drain
FILTRATION
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19. DRAINAGE
Geotextiles will efficiently
collect superfluous water
from structures
It will collect rainwater or
surplus water, from the soil
and discharge it
DRAINAGE
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20. REINFORCEMENT
Heavy geotextiles can be
used to reinforce earth
structures by means of fill
materials
Thanks to their high soil
fabric friction coefficient and
high tensile strength
REINFORCEMENT
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21. PROTECTION
Geotextiles are an ideal protection
from erosion of earth embankments
by wave action, currents or repeated
drawdown
A layer of geotextiles can be placed
so as to prevent leaching of materials
They can even easily be placed under
water
PROTECTION
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22. SEPARATION
Geotextiles will prevent two soil layers of
different particle sizes mixing with each other.
In this geotextiles is most often to prevent the
undesirable mixing of fill and natural soils or
two different types of fills
A geotextiles can be placed between a rail road
subgrade and track ballast to prevent
contamination
And it will result in the strength loss of ballast
by intrusion of the subgrade soil
SEPARATION OF DIFFERENT
PAVEMENT MATERIALS
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24. RAILWAY WORKS
The development of the railway
networks being greatly boosted by
the present state of economy
because of their profitability in
view of increasing cost of energy
and their reliability as a result of the
punctuality of trains even in the
adverse weather condition 24
RAILWAY WORK
25. ADVANTAGES AND DISADVANTAGES
ADVANTAGES
They are lighter in weight, this makes for easier handling and laying
on site
Transport and labour costs are less in real terms
Knitted geotextiles have high tear strength
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26. DISADVANTAGES
Installation is critical and requires experienced contractors
These may delay seed germination, due to reduction in soil
temperature
Geotextiles have maximum flow rate limitations
Not suitable for areas that have foot traffic
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27. CONCLUSION
Geotextiles are effective tools in the hands of civil engineer that have proved to solve
a major geotechnical problems
geotextiles offer a major solution for subgrade improvement and soil protection. The
study using geotextiles for embankment protection shows that the geotextiles laid
embankment’s perform good in terms of functional and structural evaluation
The geotextiles appeared to be effective in preventing erosion, to retain moisture and
to fecilitate stability of road pavement
And also extensive awareness should be created among the people about the
application of geotextiles
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28. REFFERENCES
1. Bhavesh joshi, Dr . R. P Arora. (2015)-pavement design by using geotextile. “ International journal
of civil engineering and technology”(IJCIET)
2. Truptimalapattnaik, binayakbidyasagar, biplabkesharisamal (2016)- application of geotextile in
pavement. “International journal of engineering science and research technology”
3. Saheem S and Tomy cyriac (2013)-performance evaluation of geotextiles as earth reinforcement in
soil structures.“ American journal of engineering research” (AJER)
4. M.Emin Kuttay and Ahemet H. Aydilk.(2005)-filtration performance of two-layer geotextile
systems. “Geotechnical testing journal” volume.28.no.1.
5. Dr.Bipin JAgarwal (2011)-geotextile application to civil engineering-overview. “National
conference on recent trends in engineering and technology” 28
