What is plastic? A material that contains one or more organic polymers of large molecular weight, solid in its finished state and at some state while manufacturing or processing into finished articles, can be shaped by its flow. Types of plastics 1. Thermosets. 2. Elastomers. 3. Thermoplastics. NATURAL RESINS solids or semi solid materials light yellow to darkbrown in colour carbon, hydrogen and oxygen. globules on the bark . SYNTHETIC RESINS derived primarily from petroleum. polystyrene, polyesters and acrylics sed in the manufacture of varnishes, plastics, adhesives and rubber.
Various Resins Of Plastic Polyethylene terephthalate (PET,PETE) Density polyethylene(HDPE) Vinyl(Poly vinyl chloride or PVC) Low Density Polyethylene(LDPE) Polypropylene(PP) BASIC PROCESSES Segregation . Cleaning process . Shredding process . Collection process . 2. Wet Process Waste plastics by direct mixing with hot bitumen at 160A‚A°C Mechanical stirrer is needed Addition of stabilizers and proper cooling.
Since the wet process require a lot of investment and bigger plants Not commonly used.. ADVANTAGES OF PLASTIC ROAD Use higher percentage of plastic waste.
Reduce the need of bitumen by around 10%. Increase the strength and performance of the road. Reduce the cost to around Rs. 5000/Km. of single lane road. Generate jobs for rag pickers. Develop a technology, which is eco-friendly. DISADVANTAGES OF PLASTIC ROADS 1. Cleaning process Toxics present in the co-mingled plastic waste would d start leaching. . During the road laying process But the presence of chlorine will definitely release noxious HCL gas. 3. After the road laying The components of the road, once it has been laid, are not inert.
It is opined that the first rain will trigger leaching. As the plastics will merely form a sticky layer, (mechanical abrasion). once the road is started to be used will cause the release of fine polymer particles. When air-borne, these will cause a particulate problem. CONCLUSION
Plastic will increase the melting point of the bitumen use of the innovative technology not only strengthened the road construction but also increased the road life Help to improve the environment . plastic road would be a boon for Indiaa„? s hot and extremely humid climate where durable and eco-friendly roads which will relive the earth from all type of plastic waste Reference: http://www. seminarprojects. com/Thread-reuse-of-plastic-waste-in-road-construction-full-report#ixzz1gliWsmVK vvvvvv