Volume No. 8 Issue No.: 3A Page No.: 759- 765

 

UPGRADATION OF GEOTECHNICAL PARAMETERS BY WASTE PLASTIC ADMIXTURE IN SOIL

 

Raghu P.V.*, Mukherjee S. P. and Chakrabarti Sankar

Department of Civil Engineering, Jadavpur University, Kolkata (INDIA)

 

Received on : September 24, 2013

 

ABSTRACT

 

Waste plastics impart huge environmental problems. Apparently they are not serious harmful materials but they require huge amount of space in land fills and also consume high amount of energy for its production. Scavenge plastic also poses clogging of drainage conduits and as such often observed rainwater detention in cities and towns. Ministry of Environment and Forest (MoEF) and Central Pollution Control Board (CPCB) inducted rules for plastic waste management and recommended also possible recycling of waste as far as possible. For a sustainable resource management practice, plastic waste are being recycled in many ways .Plastic waste management institute reported about 55% of waste plastic are effectively being utilized in energy recovery and feed stock recycling. All the plastics are not recyclable. A common problem with recycling plastics is that they are often made up of more than one kind of polymer or some sort of fibers added to the plastics (a composite) to give added strength. The above characteristics are helpful for using the waste materials in poor grade soil to enhance the geotechnical properties of soil. Plastic fibers are similar to the roots of trees and vegetation which provide an excellent ingredient to improve the soils and the stability of natural slopes. One of the main advantages of using plastic fibers is the maintenance of strength isotropy and the absence of potential places of weakness that can develop parallel to oriented reinforcement. Polyethylene Terephthalate (PET) materials are used in bottles, food packaging and carpets. Some investigation showed that the PET fiber reinforcement enhances the peak and ultimate strength of both cemented uncemented soil and does not change the initial stiffness of the soil. PET bottle fibers mixed soil behaves as reinforced soil similar to fiber reinforced soil. The introduction of waste plastic as strips or fibers improve the soil texture and strength in terms of compressibility, energy absorption, shear strength, CBR since their addition also helps favorably. The present paper describes the status on uses of various waste plastic fibers for also for the parameters improvement of soil in terms of its geotechnical parameters.

 

Keywords : Fiber reinforced material, Soil improvement, Recycling, Properties, Strength, Compressibility, Energy absorption

 

 

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