Use of Plastic Waste in construction of Flexible Pavement: A Creative Waste

Management Idea

PRESENTED BY :AMIT TYAGI

APOORV AGARWALIII YEAR, CIVIL ENGG.

SKIT JAIPUR

PRESENTED TO :NATIONAL CONFERENCE ON

ADVANCES IN CIVIL ENGINEERING-2016

POORNIMA GROUP OF INSTITUTIONS

Table of Contents: Introduction What are Waste Plastic roads? Plastic Waste Scenario Waste Plastic as a Binder Materials used and Methodology Characteristics Advantages Conclusion Implementation References

Introduction : 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 .

Laboratory studies proved that waste plastic Enhances / Improves the properties of bituminous mix .

It is better solution for disposal in an useful way.

What are Waste Plastic roads?

The roads constructed using waste plastic, are known as Plastic Roads.

Are found to perform better compared to those constructed with conventional bitumen.

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.

Plastic Waste Scenario:

According to Central Pollution Control Board (CPCB) ,India generates 56 lakh tonnes of plastic waste annually.

The metro cities are major culpritsDelhi producing -690 tonnes per day Chennai -429 tonnes per dayKolkata -426 tonnes per dayMumbai -408 tonnes per day

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.

Waste Plastics - As Binder

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.

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).

Materials Used:

Methodology: Construction of Plastic roadsStep 1 : Plastics waste (bags ,cups , bottles ) are

cut into a size between 2.36mm and 4.75mm using shredding machine.

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).

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.

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.

Characteristics of the Process:

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.

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.

Advantages Of Waste Plastic Bituminous Mix:

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.

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.

Conclusion: 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.

Implementation:

M.G. Road (Towards Trinity Circle)

Bangalore - Mysore State Highway

References: Miss Apurva J Chavan (2013), "Use of plastic waste in flexible

pavement" ISSN 2319 - 4847, Volume 2, Issue 4, International Journal of Application or Innovation in Engineering & Management

Vatsal Patel,Snehal Popli,Drashti Bhatt (2014), "Utilization of Plastic Waste in Construction of Roads" ISSN 2277 - 8179, Volume 3, Issue 4, International Journal of Scientific Research

Sasane Neha .B,Gaikwad.Harish,Dr. J R Patil,Dr. S D Khandekar (2015), "Application of waste plastic as an effectve construction material in flexible pavement" e-ISSN 2395 - 0056,p-ISSN 2395 - 0072, Volume 2, Issue 3, International Research Journal of Engineering and Technology

Mr P B Rajmane, Pro AK Gupta,Prof DB Desai, "Effective utilization o waste plastic in construction of flexible pavement for improving their performance" ISSN 2278 - 1684, PP 27 - 30, OSR Journal of Mechanical and Civil Engineering

Anzar Hamid Mir (2015), "Use of plastic waste in pavement construction: An example of creative waste management" ISSN (e) 2250 - 3021, ISSN (p)

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