Plastic roads

Plastic roads

1. PLASTIC ROADS

2. CONTENTS Introduction. What are plastic roads? Field trials Comparison between ordinary road and plastic road Advantages of plastic roads Disadvantages of plastic roads Conclusion

3. INTRODUCTION Disposal of waste plastic is a major problem. It is non biodegradable and it mainly consists of low density polyethylene. Burning of these waste plastic bags causes environmental pollution. To find its utility in bituminous mixes for road construction, laboratory performance studies were conducted on bituminous mixes. Laboratory studies proved that waste plastic enhances the property of the mix.

4. Plastic roads mainly use plastic carry bags, disposable cups and bottles that are collected from garbage dumps as an important ingredient of the construction material. Improvement in properties of bituminous mix provides the solution for disposal in an useful way. When mixed with hot bitumen, plastics melt to form an oily coat over the aggregate and the mixture is laid on the road surface like a normal tar road.

5. WHAT ARE WASTE PLASTIC ROADS? The roads constructed using waste plastic, popularly known as plastic roads, are found to perform better compared to these constructed with conventional bitumen.

6. Plastic Why how Which

7. WHY PLASTIC? Resistance to water, wear and tear Durability Available at low cost Disposal issues Environmental and ecological issues Properties enhanced.

8. TYPE OF PLASTIC ORIGIN Low density polyethylene (LDPE) Bags, sacks, bin lining High density polyethylene (HDPE) Bottles of pharmaceuticals, disinfectants, milk, fruit juices, bottle caps Polypropylene (PP) Film wrapping for biscuits, microwave trays for ready made meals Polystyrene (PS) Yoghurt pots clear egg packs, bottle caps Polyvinyl chloride (PVC) Mineral water bottles, credit cards, toys, pipes and gutters, electrical fittings, furniture, folders and pens

9. HOW TO USE 1.SEGREGATION: Plastic waste collected from various sources must be separated from other waste. Maximum thickness of 60 microns.

10. 2.CLEANING PROCESS Plastic waste get cleaned and dried.

11. 3.SHREDDING PROCESS : Different types of plastic wastes are mixed together and plastics gets shredded or cut into small piece.

12. 4. COLLECTION PROCESS: Then plastic waste retaining in 2.36 mm is collected.

13. FIELD TRIALS Dry process Wet process

14. DRY PROCESS

15. HOT MIX PLANT

16. WASTE PLASTIC MIXED WITH THE HOT AGGREGATE

17. BITUMEN IS ADDED WITH PLASTIC COATED AGGREGATE

18. ROAD LAYING

19. WET PROCESS Waste plastics by directly mixing with hot bitumen at 160 ͦ 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.

20. COMPARISION BETWEEN ORDINARY BITUMEN ROAD AND WASTE PLASTIC ROADS: SL.NO PROPERTIES ORDINARY ROADS PLASTIC ROADS 1 MARSHALL STABILITY VALUE LESS MORE 2 BINDING PROPERTY GOOD BETTER 3 SOFTENING POINT MORE LESS 4 PENETRATION VALUE LESS MORE 5 RUTTING MORE LESS 6 STRIPPING (POT HOLES) MORE NO 7 DURABILITY OF THE ROADS GOOD BETTER 8 SEEPAGE OF WATER YES NO

21. ADVANTAGES Better resistance towards rain water and water stagnation. No stripping and no potholes. The strength of the road is increased by 100%. The cost of road construction is also decreased. The maintenance cost of road is almost nil. Use higher percentage of plastic reduces the disposal problem of waste plastic. Reduce the need of bitumen by around 10%.

22. DISADVANTAGES Cleaning process: Toxics present in the co-mingled plastic waste would start leaching. During the road laying process: In the presence of chlorine will definitely release HCL gas. After the road laying: It is opined that the first rain will trigger leaching. as the plastic will merely from a sticky layer, (mechanical abrasion).

23. CONCLUSION Use of 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 India's hot and extremely humid climate where durable and eco-friendly roads which will relive the earth from all type of plastic waste.

24. REFERENCE Bhogayata, “ Feasibility of waste metalized polythylene used as constituent” April 2010. Bindhu C.S and Dr. K.S.Beena., “Waste plastic as additive in stone mastic asphalt” September 2012. Konin a, “Effect of plastic waste content on mechanical property of flexible pavements” December 2012. Mercy Joseph Poweth, Solly George, Jessy Paul, “Study on use of plastic waste in road construction” March 2013.

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