Geotextile
- 1. • Presentation on: Geo Textile
- 2. Presented by: Md. Al-Amin Masum BSc in Textile Engineering Southeast University [email protected]
- 3. The prefix of geo textile, geo, means “Earth” and textile means “Fabric”. The geotextile is more aptly geosynthetics belong to the class of Technical Textiles under GEOTECH catagory.
- 4. The first application of geo textile were woven industry fabrics used in 1950. A waterfront structure was built in Florida in 1958. The first nonwoven geo textile was developed in 1968 by the Rhone opulence company in FRANCE . In France thick needle- punched polyester, which was used in dam construction in 1970.
- 5. Geogrids Geonets Geotextile Geomembranes Geosynthetic Clay Liners Geopipe Geocomposites
- 6. A permeable geo textile comprised solely of textiles. Geo textiles are used with foundation, soil, rock, or any other geotechnical engineering-related material as an integral part of human-made project, structure, or system.
- 7. The vast majority of geotextile are made from polypropylene, polyamides, polyethylene or polyester. Such as, ◦ Woven geotextile. ◦ Non-woven geotextile. Now a days Jute are also applied as geotextile.
- 8. Woven geotextiles: • Woven monofilament. • Woven multifilament. • Woven slit-film monofilament. • Woven slit-film multifilament. Woven geotextiles are made with synthetic polymers that are woven together. Many roads and parking lots are built on top of a woven geotextile. The fabric holds the earth in place, preventing shifting or movement and creating a stable base for the construction
- 9. Needle punched Heat bonded Non-woven geotextile, which have the texture of felt, are often quicker and cheaper to create but also have shorter lifespan and do nothing to help reinforce or stabilize the soil.
- 10. Jute Geotextile (JGT) is made of bast fibers of jute plant. Jute Geo Textile ◦ Woven ◦ Non-woven Geo Jute application Erosion control. Separation, filtration and drainage in civil engineering work. Woven geogrid. Agricultural uses.
- 11. Separation. Stabilization. Filtration. Reinforcement. Protection. Drainage.
- 12. Geotextile will prevent two soil layers of different particle sizes from mixing with each other, as is illustrated the image below. In this function, the geotextile serves to separate two dissimilar materials, eg, two different soils, landfill material and the native soil, stone material, foundation soils and various types of walls, or one of many other similar situations.
- 13. During such an application, geotextile is placed on wet, compressible or soft material that shows little natural strength. Geotextiles are separators allowing water moving into free draining construction soils. Natural soil consolidation is thus going to happen. Because of this consolidation process, natural soil gains strength. This offers a very strong construction foundation that can be utilized in the future.
- 14. Geotextile will efficiently collect superfluous water from structures, such as rainwater or surplus water, from the soil and discharge it. Drainage is normally arranged so it happens parallel to geotextile plane.
- 15. Geotextile are an ideal interface for reverse filtration in the soil adjacent to the geotextile. The complex needle-punched structure of the geotextile enables the retention of fine particles without reducing the permeability of the drain. Filtration best achieved in needle-punched nonwoven materials.
- 16. Heavy geotextile can be used to reinforce earth structures by means of fill materials. Their high soil fabric friction coefficient and high tensile strength, they are an ideal reinforcement solution.
- 17. 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 fine material. They can be used for rock beaching or as mattress structures. They can even easily be placed under water.
- 18. When impregnated with an asphaltic emulsion, geotextiles become impermeable and can then be used as moisture barriers. The primary application for this type of geotextile is in pavement rehabilitation.
- 19. Without GeotextilesWith Geotextiles The main cause of pavement and road damage is contamination of the aggregate base and the resulting loss of aggregate strength. Continuous vehicle pressure over time can cause sub grade soils to migrate into the aggregate base. This significantly reduces the effective aggregate thickness, destroying the road support and reducing roadway performance and life.
- 20. 1. VIRGIN POLYMER NONWOVEN POLYPROPYLENE GEOTEXTILE:- Suitable for most applications dependent upon grade selected. These are needle punched, virgin polypropylene, nonwoven geotextiles. 2. VIRGIN POLYMER NONWOVEN POLYESTER GEOTEXTILE :– Suitable for most applications dependent upon grade selected. The most common fabric construction type marketed here in this Region. 3. PET ENGINEERED WOVEN GEOTEXTILE: This geotextile is an engineered woven geotextile that has exceptionally high tensile strength characteristics at low levels of strain.
- 21. The annual growth rate of geo-textile is very high. During the period 2000-2005 the rate of growth was 4.6% and during 2005-2010 the rate of growth was 5.3%
- 22. Fluid transmission Roadways parking tots Loading & construction sites. Prevent drainage system. Filtration, protection, separation function. For water way erosion control. Reduce soil piping & embankment erosion. Prevention of weed growth. Moisture conservation for horticulture.
- 23. High in strength. UV resistance. Rot resistance. Resists biological degradation. Chemically inert. Increases the life of road.
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