Presentation onApplication of modern geo-textile in

BangladeshPresented By :

Venue: NUB, Date : November 17, 2016

Name ID

1) MD. Maynoul Hossain BTX-150100370

2) MD. Shihab Uddin BTX-150100372

3) Shekh Sahriaz Kaiser BTX-150100375

4) Muhammad Nafiz Reza BTX-150100377

Submitted To,

Md. Nazmul Islam.Lecturer (Fabric)

Dept. of textile engineeringNUB

Venue: NUB, Date : November 17, 2016

Welcome To Our Presentation

Venue: NUB, Date : November 17, 2016

Geo-Textile :

As we know, the prefix of Geo-textile, Geo means earth and the ‘textile’ means fabric. Therefore, according to the definition of ASTM 4439, the geo-textile is defined as follows

A permeable geo-synthetic included only of textiles. Geo-textile is used with foundation, soil, rocks, earth and any other geo technical engineering related material as an integral part of human-made project, structure, or system.

Venue: NUB, Date : November 17, 2016

Geo-Textile :

The ASAE (Society for Engineering in Agricultural, Food, and Biological Systems) defines a geo-textile 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.”

Venue: NUB, Date : November 17, 2016

Types of Geo-textile :

According to period of use :

• First generation : These were the geo-textile which were manufactured for carpet or industrial sacking.

• Second generation : These were the geo-textile which were manufactured for certain technical purpose but without adopting any modern techniques.

• Third generation : These are the actual geo-textile designed and produced to meet certain end use.

Venue: NUB, Date : November 17, 2016

Major application of geo-textile :

• Reinforcement,• Separation,• Drainage,• Filtration,• Erosion control,• Permanent roads,• Railroad stabilization,• Landfill gas collection.

Venue: NUB, Date : November 17, 2016

Modern geo-textile :

Modern geo-textiles are usually made from synthetic polymers- polypropylenes, polyesters, polyethylene, and polyamides which do not decay under biological and chemical processes. This makes them useful in road construction and maintenance .

Fig : Modern geo-textile. (made from polypropylene tapes)

Venue: NUB, Date : November 17, 2016

Application of modern geo-textile in Bangladesh :

Reinforcement : Due to their high soil fabric friction co-efficient and high tensile strength, heavy grades of geo-textiles are used to reinforce earth structures allowing the use of local fill material .

Venue: NUB, Date : November 17, 2016

Application of modern geo-textile in Bangladesh : Drainage : Drainage and filtration layers are used in civil applications to remove

moisture or fine particles from the system. Geo-synthetics provide a widely accepted, effective and economic alternative to traditional aggregate & sand filtration layers. Geo-synthetic materials are manufactured using a heat-bonded process to create consistent filtration characteristics utilized in a variety of markets, be it industrial filters, geo-composites, or underground drainage layers.

Fig : Drainage by using geo-textile

Venue: NUB, Date : November 17, 2016

Application of modern geo-textile in Bangladesh : COASTAL EMBANKMENT : The coastal embankment which is eroded by

scouring due to wave action, current velocity and also damage by excess wheel load of the loaded vehicles. These affected embankments can be protected by using Geo-textile, Geo-tube and placement geo-bag. We offer different techniques for protecting the unsuitable soil of coastal embankment.

Fig : coastal embankment by providing geo-textile tube.

Venue: NUB, Date : November 17, 2016

Application of modern geo-textile in Bangladesh : Protection : Erosion of earth embankments by wave action, currents

and repeated drawdown is a constant problem requiring the use of non-erodable protection in the form of rock beaching or mattress structures. Beneath these is placed a layer of geo-textile to prevent bleaching of fine material. The geo-textile is easily placed, even under water.

Fig : River bank protection by using geo-textile with gabion box

Venue: NUB, Date : November 17, 2016

Application of modern geo-textile in Bangladesh : Railroad stabilization : The present paper discusses about the importance of using geo-

textile in Railways. Geo-textiles are used for stabilization and load bearing capacity improvement of sub grade below the railway tracks use of geo-textile may increase cost of railway tracks, however the maintains cost may reduce by giving the railway tracks long life time.

Fig : Rail way line stabilization at Nator Shantahar

Venue: NUB, Date : November 17, 2016

Application of modern geo-textile in Bangladesh : PROTECTION WORK OF THE EMBANKMENT OF POWER PLANT : The

embankment near the power plant should be stable enough to withstand the pressure come from the movement of heavy water vehicle. The embankment is also eroded by scouring due to flood, rainfall and current velocity. These affected embankments can be protected by using Geo-textile. We offer different techniques for protecting the unsuitable soil of the embankment.

.Fig : The embankment protection work by using geo-textile sheet at Meghna Ghat Power Plant

Venue: NUB, Date : November 17, 2016

Application of modern geo-textile in Bangladesh : Erosion control : Geo-textiles have a long and distinguished record of use in erosion control

applications. Geo-textiles have been utilized unde r riprap and behind and around bulkheads for decades. One of the earliest documented causes utilizing a geo-textile for erosion control took place in 1958. Most governmental agencies have geo-textile specifications developed for permanent erosion control. The AASHTO M-288 specification offers two classes of woven and nonwoven geo-textiles for permanent erosion control.

Fig: Erosion control by using geo-textile

Venue: NUB, Date : November 17, 2016

Application of modern geo-textile in Bangladesh :

Permanent roads : Low-cost pavement is protected from premature degradation and frequent maintenance by including an appropriate geo-textile as a separator between the sub grade and the pavement structure. The strength properties required to survive construction and provide long-term separation are described.

Fig : permanent road.

Venue: NUB, Date : November 17, 2016

Application of modern geo-textile in Bangladesh :

Landfill gas collection : Maintaining a conduit for gases to escape from landfills can be challenging . Heavy weight nonwoven geo-textiles help collect and transport gases that can build up beneath the flexible geo-membranes used in the closure of solid waste facilities.

Fig : Landfill gas collection

Venue: NUB, Date : November 17, 2016

References List : https://www.researchgate.net/publication/305305320_Geo_Textile_-A_Tr

emendous_Invention_of_Geo_Technical_Engineering http://www.cottonbangladesh.com/Application-of-Geotextiles.htm https://books.google.com.bd/books/about/Modern_Land_Drainage.html?

id=g61UIupnjMAC http://www.dirdgroup.org/engineering_home.php https://en.wikipedia.org/wiki/Technical_textile#Geotech_.28Geo-textiles.

29 https://www.expatads.com/66-Bangladesh/posts/25-Industrial-Machines/

104-Industrial-Manufacturers/3233923-Geotextiles-nets-for-building-industries.html

Venue: NUB, Date : November 17, 2016

Thank you everybody for your Attention

Venue: NUB, Date : November 17, 2016