BUBT

1. GEOTEXTILE
------ Presented by ------
Md.Mamun Sardar
ID:12132107048
Intake:02
Section:02
BUBT

2. Introduction
 Geotextiles are permeable fabrics which, when
used in association with soil, have the ability to
separate, filter, reinforce, protect, or drain.
 It was discovered in 1950
 Typically made from polypropylene or polyester
, geotextile fabrics come in three basic forms:
 Woven (looks likes mail bag sacking)
 Needle punched (looks like felt)
 Heat bonded (looks like ironed felt)

3. Forms of geotextiles fabric
 Geotextiles fabrics come in two basic forms:
 Woven
 Non-woven
A. Needle punched
B. Heat bonded
woven
Heat bonded needle punched

4. Raw Material of geotextile
 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

5. Properties of geotextile
 Physical properties
 Mechanical properties
 Hydraulic properties
 Degradation properties
 Endurance properties
fig: soil layers and geo-layer

8. Functions of geotextiles fabric

11. Road under PRESSURE

12. Application area of geotextile
 Civil engineering includes:
Road
Embankment
Railroads
Airfields
Retaining structures
Canal
Damp
Bank protection
Costal engineering
Building foundation improvement

16. Conclusion:
 Geotextile is an effective and economic method of
solving most of the geotechnical problems in roads.
 The design engineer should be well aware of the
possible problems and should use this relatively new
tool for solving them .
 For this he should understand properties and
capabilities of the geotextile material.