PLASTIC IN ROAD

CONSTRUCTIONPRESENTED BY

N. K. SONUNE

GUIDED BY

N. Y. BHORE(SIR)

GOVERNMENT POLYTECHNIC AMRAVATI

GOVERNMENT POLYTECHNIC

AMRAVATI

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.

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

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.

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

PLASTIC ROADS

(BANGALORE)

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

PLASTIC WASTE,

HARMFULL TO EARTH

STEPS FOR USING PLASTICS

IN ROADS:-

1. Segregation.

2. Cleaning process.

3. Shredding process.

4. Collection process.

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

PROCESSCLEANING PROCESS

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.

COLLECTED PLASTICSHREDDING PROCESS

ON SITE EXECUTION

There are two type of execution

1. WET PROCESS

2. DRY PROCESS

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..

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 CHAMBERMINI HOT MIX PLANT

The shredded plastic waste is added in equal

proportion.

WASTE PLASTICS MIXED WITH THE HOT

AGGREGATES

WASTE PLASTICS MIXED WITH THE HOT

AGGREGATES

COATED AGGREGATE PLAIN AGGREGATE

This plastics gets coated over the aggregate

uniformly.

BITUMEN IS ADDED WITH

COATED AGGREGATEAGGREAGTE PALSTIC BITUMEN

MIX

• Immediately the hot Bitumen at 160°C is added

with the mixture.

The mixture is transferred to the road and the

road is laid.

Road is being laid

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.

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.

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.

COMPARISION BETWEEN

TAR & PLASTIC ROAD

TAR ROAD PLASTIC ROAD

Trisool Road (Tamil Nadu)

Laid in April 2004

Photo date Jan 2007

Jubilee Park Road (Jamshedpur)

Laid in Jan 2005

Photo date Aug 2010

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.