This document discusses using plastic waste in road construction. It begins by outlining the process, which involves segregating, cleaning, shredding and collecting plastic waste. There are two methods for incorporating plastic into roads - a wet process that mixes plastic directly with hot bitumen, and a dry process where plastic coats heated aggregates before adding bitumen. Using plastic in roads provides benefits like increased strength and reduced costs, while helping address the problem of plastic waste. However, there are also potential disadvantages like toxic chemical leaching during construction and use. Overall, plastic roads present an environmentally-friendly way to strengthen pavements and reduce plastic pollution.

1. GOVERNMENT POLYTECHNIC
AMRAVATI
PLASTIC IN ROAD
CONSTRUCTION
PRESENTED BY
N. K. SONUNE
GUIDED BY
N. Y. BHORE(SIR)

2. GOVERNMENT POLYTECHNIC
AMRAVATI

3. HOW THIS IDEA EMERGED?
Threats of bans on POLYBAGS in south India –Dirty polybags
Waste eyesore-landfills full up.
Realistic Situation-
-Raw materials scarce in INDIA .
-Economies of Asia-similar old disposal habits .
-Cost and price driven responses can survive.
-We firmly believe waste in only a resource in the wrong
places.

4. OUTLINE
 Introduction
 About the plastics
 Steps for using plastics
 On site execution
 Characteristic of waste plastic bitumen
 Characteristic of plastic coated aggregate
 Advantages
 Disadvantages
 Conclusion

5. INTRODUCTION
Recent studies in this
direction have shown some
hope in terms of using
plastic-waste in road
construction.
Plastic roads mainly use
plastic carry-bags, disposable
cups and PET bottles that are
collected from garbage dumps
as an important ingredient of
the construction material.
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.

6. INTRODUCTION
 Plastic, Plastic, plastic…. What would we do without
them?
 We use them all the time without thinking, whether
it’s for liquid, storing food or throughout our
automobile
 The first vehicular bridge composed of an immiscible
polymer blend of polystyrene/high density PE
reinforced thermoplastic with rectangular cross
section was build at FORT LEONARD WOOD,
MISSOURI in 1998
 A second vehicular bridge was constructed in NEW
BALTIMORE, NEW YORK in 1994 by society of
plastic engineer

7. PLASTIC ROADS
(BANGALORE)

8. WHAT IS PLASTIC?
 A plastic material is any of a wide range of synthetic
or semi-synthetic organic amorphous solids
used in the manufacturing of industrial products.
 Plastics are typically polymers of high molecular mass
and may contain other substances to improve performance
and/or reduce costs. Monomers of plastic are
either natural or synthetic organic compounds

9. PLASTIC WASTE,
HARMFULL TO EARTH

10. STEPS FOR USING PLASTICS
IN ROADS:-
1. Segregation.
2. Cleaning process.
3. Shredding process.
4. Collection process.

11. 1) SEGREGATION-
 Plastic waste collected from various sources
must be separated from other waste.
 Maximum thickness of 60 microns.
2) CLEANING PROCESS-
 Plastic waste get cleaned and dried.
SEGREGATION
PROCESS
CLEANING PROCESS

12. 3) SHREDDING PROCESS-Different
types of plastic wastes are mixed together and
Plastics gets shredded or cut into small piece.
4) COLLECTION PROCESS -
Then plastic waste retaining in 2.36 mm is collected.
SHREDDING PROCESS COLLECTED PLASTIC

13. ON SITE EXECUTION
There are two type of execution
 1. WET PROCESS
 2. DRY PROCESS

14. WET PROCESS
 Blending of waste plastics by direct mixing
of shredded plastics with hot bitumen at 160°C
 Mechanical stirrer is needed as the mixing is
difficult because of difference in viscosities of
molten polymer and bitumen.
 Addition of stabilizers and proper cooling are
required.
 Since the wet process require a lot of
investment and bigger plants
 Not commonly used..

15. DRY PROCESS
 This process is developed by Dr. Vasudevan.
 The aggregate is heated to 170°C in the Mini hot Mix Plant .
AGGREGATE TRANSFERRED TO
PUDDLING CHAMBER
MINI HOT MIX PLANT

16.  The shredded plastic waste is added in equal
proportion.
WASTE PLASTICS MIXED WITH THE HOT
AGGREGATES

17. WASTE PLASTICS MIXED WITH THE HOT
AGGREGATES

18.  This plastics gets coated over the aggregate
uniformly.
COATED AGGREGATE PLAIN AGGREGATE

19. • Immediately the hot Bitumen at 160°C is added
with the mixture.
BITUMEN IS ADDED WITH
COATED AGGREGATE
AGGREAGTE PALSTIC BITUMEN
MIX

20.  The mixture is transferred to the road and the
road is laid.
Road is being laid

21. CHARACTERISTIC OF PLASTICS
COATED AGGREGATE
 Los Angel’s Abrasion Test –
 Wear and tear values of plastic coated aggregate
if found to be decreasing while using plastics.
 Eg. 37% without plastic, 32% with 1% plastic,
29% with 2% plastic.
 Soundness Test-
 The plastic coated aggregate, did not show any
weight loss, hence improve the quality of the
aggregate.

22. ADVANTAGES
 Simple process, no new machinery is required
 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, no toxic
gas evaluation.
 Reduced penetration and ductility, a higher softening
point, resist the permeation of water and cold
cracking.

23. DISADVANTAGAES OF PLASTIC
ROADS
1. Cleaning process
Toxics present in the co-mingled plastic waste
would start leaching.
2. During the road laying process
In 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.

24. COMPARISION BETWEEN
TAR & PLASTIC ROAD
TAR ROAD PLASTIC ROAD

25. Trisool Road (Tamil Nadu)
Laid in April 2004
Photo date Jan 2007

26. Jubilee Park Road (Jamshedpur)
Laid in Jan 2005
Photo date Aug 2010

27. 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 (eco-friendly).
 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.