06-07-2012, 02:29 PM
Utilization of Waste Plastic Bags in Bituminous Mix for Improved Performance of Roads
wasteplasticrecyclingforbitumen-12876691508776-phpapp01.pptx (Size: 83.53 KB / Downloads: 43)
INTRODUCTION
The growth in various types of industries together with population growth has resulted in enormous increase in production of various types of waste materials, world over. The creation and disposal of non-decaying waste materials such as Blast Furnace Slag, Fly-ash, Steel Slag, Scrap Tyres, Plastics, etc. have been posing difficult problems in developed as well as in developing countries. Considerable work has been done in various countries for the disposal of some of these waste products and utilisation of some other products and there is a long list of published literature dealing with different aspects of these challenging problems.
USE OF RE-CYCLED PLASTICS AS ADDITIVES IN BITUMINOUS MIXES
It has been possible to improve the performance of bituminous mixes used in the surfacing course of road pavements, with the help of various types of additives to bitumen such as polymers, rubber latex, crumb rubber- treated with some chemicals, etc. Some limited studies have been reported on the use of re-cycled plastic, mainly polyethylene, in the manufacture of polymer - modified asphalt cement or bitumen. According to Larry Flynn (3), re-cycled polyethylene from grocery bags may be useful in asphaltic (bituminous) pavements, resulting in reduced permanent deformation in the form of rutting and reduced low - temperature cracking of the pavement surfacing.