utilization of plastics in roads

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UTILIZATION OF WASTE PLASTIC IN ROAD CONSTRUCTION Creating Value - Challenges & New Opportuniti es with Indigenous Technology By :- PraSaNTa kUMar MahAtO

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Utilization of Plastics in construction of roads.

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Page 1: Utilization of Plastics in Roads

UTILIZATION OF WASTE PLASTIC IN ROAD CONSTRUCTION

Creating Value - Challenges & NewOpportuniti

es with

Indigenous Technology

By :- PraSaNTa kUMar MahAtO

Page 2: Utilization of Plastics in Roads

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.

Page 3: Utilization of Plastics in Roads

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

Page 4: Utilization of Plastics in Roads

INTRODUCTIONRecent studies in this direction have shown some hope in terms of using plastic-waste in road construction i.e., Plastic roads. 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.

Page 5: Utilization of Plastics in Roads

PLASTIC ROADS (BANGALORE)

Page 6: Utilization of Plastics in Roads

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 perfo--rmance and/or reduce costs. Monomers of plastic are either natural or synthetic organic compoundsDiscarded thin-plastic carry-bags are a menace. In town they clog drains, cause flooding, choke animals that eat them and are unsightly.

Page 7: Utilization of Plastics in Roads

PLASTIC WASTE, HARMFULL TO EARTH

Page 8: Utilization of Plastics in Roads

STEPS FOR USING PLASTICS IN ROADS:-

1. Segregation.

2. Cleaning process.

3. Shredding process.

4. Collection process.

Page 9: Utilization of Plastics in Roads

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

Page 10: Utilization of Plastics in Roads

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

Page 11: Utilization of Plastics in Roads

ON SITE EXECUTION

There are two type of execution

1. WET PROCESS

2. DRY PROCESS

Page 12: Utilization of Plastics in Roads

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..

Page 13: Utilization of Plastics in Roads

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

Page 14: Utilization of Plastics in Roads

The shredded plastic waste is added in equal proportion.

WASTE PLASTICS MIXED WITH THE HOT AGGREGATES

Page 15: Utilization of Plastics in Roads

COATED AGGREGATE PLAIN AGGREGATE

This plastics gets coated over the aggregate uniformly.

Page 16: Utilization of Plastics in Roads

BITUMEN IS ADDED WITHCOATED AGGREGATE

AGGREAGTE PALSTIC BITUMENMIX

• Immediately the hot Bitumen at 160°C is added with the mixture.

Page 17: Utilization of Plastics in Roads

The mixture is transferred to the road and the road is laid.

Road is being laid

Page 18: Utilization of Plastics in Roads

CHARACTERISTIC OF POLYMER MODIFIED

BITUMEN

% of Plastics

Ductility(cm) Penetration(mm)

Softening Point(oC)

1% 64 95 54

2% 55 90 50

3% 20 80 50

5% 11 55 72

10% 7 NIL 75

Use of higher percentage of plastics in polymer modified bitumen is not favorable.

Page 19: Utilization of Plastics in Roads

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.

Page 20: Utilization of Plastics in Roads

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.

Page 21: Utilization of Plastics in Roads

DISADVANTAGAES OF PLASTIC ROADS

1. Cleaning processToxics present in the co-mingled plastic waste would start leaching.

2. During the road laying processIn the presence of chlorine will definitely release noxious HCL gas.

3.After the road layingThe components of the road, once it has been laid, are not inert.

Page 22: Utilization of Plastics in Roads

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

Page 23: Utilization of Plastics in Roads

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

Page 24: Utilization of Plastics in Roads

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.

Page 25: Utilization of Plastics in Roads