Construction of Flexible pavements using waste plastic

1. Use of Plastic Waste in construction of
Flexible Pavement: A Creative Waste
Management Idea
PRESENTED BY :
AMIT TYAGI
APOORV AGARWAL
III YEAR, CIVIL ENGG.
SKIT JAIPUR
PRESENTED TO :
NATIONAL CONFERENCE ON
ADVANCES IN CIVIL ENGINEERING-
2016
POORNIMA GROUP OF INSTITUTIONS

2.  Introduction
 What are Waste Plastic roads?
 Plastic Waste Scenario
 Waste Plastic as a Binder
 Materials used and Methodology
 Characteristics
 Advantages
 Conclusion
 Implementation
 References

3.  Disposal of waste plastic is a major problem.
It is non-biodegradable.
 Burning of these waste plastic causes
pollution.
 To find its utility in bituminous mixes for
road construction , Laboratory performance
studies were conducted on bituminous
mixes .

4.  Laboratory studies proved that waste plastic
Enhances / Improves the properties of
bituminous mix .
 It is better solution for disposal in an useful
way.

5.  The roads constructed using waste plastic,
are known as Plastic Roads.
 Are found to perform better compared to
those constructed with conventional
bitumen.

6.  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.
 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.

7.  According to Central Pollution Control
Board (CPCB) ,India generates 56 lakh
tonnes of plastic waste annually.
 The metro cities are major culprits
 Delhi producing -690 tonnes per day
 Chennai -429 tonnes per day
 Kolkata -426 tonnes per day
 Mumbai -408 tonnes per day

8.  Total plastic waste which is collected and
recycled in the country is estimated around
9,205 tonnes per day (approximately 60% of
total plastic waste) and 6,137 tonnes remain
uncollected and littered.
 In Bangalore, every day at least 4,000 tonnes
of garbage is being collected. Of which, 8 to
10 % is plastic waste which is around 300-
400 tonnes.

9.  The most used plastics/polymer materials
are polyethylene, polypropylene,
polystyrene,etc.
 Around 130-140˚C they get softened
without releasing any gaseous products.
 Various analysis has shown that there is no
gas evolution in the temperature range of
130-180°C.

10.  AGGREGATE:-
 Aggregate of 20mm, 10 mm.
 BITUMEN:-
 60/70,80/100 grade bitumen.
 WASTE PLASTIC:-
 Waste plastic in the shredded form
(PVC is not Used).

11.  Construction of Plastic roads
Step 1 : Plastics waste (bags ,cups , bottles ) are cut into a
size between 2.36mm and 4.75mm using shredding
machine.

12. Step 2 :
(a) The aggregate mix is heated to 165°-170°C and
transferred to mixing chamber.
(b)Bitumen is heated up to 160°C to have good binding
and to prevent weak bonding.
(Monitoring temperature is important).

13. Step 3: At the mixing chamber, the shredded plastics
waste is added. It get coated uniformly over the
aggregate within 30 to 60 seconds, giving an oily look.

14. Step 4: The plastics waste coated aggregate is mixed with
bitumen and the resulted mix is used for road
construction. The road laying temperature is between
110°C to 120°C.

16.  Easy process without any new machinery.
 In situ process.
 Use of lesser percentage of bitumen.
 Use of plastics waste for a safe and eco-
friendly process.

17.  Both Mini Hot Mix Plant and Central Mixing
Plant can be used.
 Only aggregate coated and bitumen is not
modified.
 Use of 60/70 and 80/90 bitumen is possible.
 No evolution of any toxic gases.
 Fly ash can also be used to give a better
performance.

18. 1. More durability.
2. Improved load bearing capacity and skid
resistance.
3. Disposal of waste plastic will no longer be a
problem.
4. Cracks, abrasion, weathering and pot holes is
reduced.

19. 5. Better resistance towards rain water and
water stagnation.
6. Less wear and tear of vehicles.
7. Cost of the road will come down, as the road
life is increased by 2 to 3 times.
8. The maintenance cost of road is very less.

21.  The waste plastic bitumen mix forms better
material for pavement construction.
 Use of waste plastics for pavement is best
methods for disposal of waste plastics.
 The use of the innovative technology
strengthened the road construction and
increases the road life as well as will help to
improve the environment and also creating
a source of income.

22. M.G. Road (Towards Trinity Circle)

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