Презентация на тему Use of plastic waste in road construction

plastics waste - construction of flexible pavement.

Plastic Road At Thambaram (2007)

is plastic??
A material that contains one

or more organic polymers of large molecular weight, solid in its finished state and at some state while manufacturing or processing into finished articles, can be shaped by its flow.
Types of plastics
1.Thermosets.
2.Elastomers.
3.Thermoplastics.

yellow to darkbrown in colour
carbon, hydrogen and oxygen.

globules on the bark .

used in the manufacture of varnishes, plastics, adhesives and

rubber.

polyethylene(HDPE)
Vinyl(Poly vinyl chloride or PVC)
Low Density

Polyethylene(LDPE)
Polypropylene(PP)

separated from other waste.
Maximum thickness of 60 microns.

SEGREGATION PROCESS

cleaning process

into small piece.
the different types of plastic wastes

are mixed together





shredding process

2.36 mm is collected.

collected plastic

1.Dry process
2.Wet

process

the Mini hot Mix Plant .

Heated aggregates

proportion.

Adding shredded plastic

Aggregate-plastic- Bitumen Mix

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

Immediately the hot Bitumen 60/70 or 80/100 grade (160°C) is added .

hot bitumen at 160°C
Mechanical stirrer is needed
Addition of stabilizers

and proper cooling.
Since the wet process require a lot of investment and bigger plants
Not commonly used..

is a good binder.

BINDING PROPERTY

Thermal study

of higher percentage of plastics in polymer modified bitumen

is not favorable.




Polymer modified bitumen

value
plastics improves aggregate impact value.
helps to improve

the quality of flexible pavement





Aggregate impact value

plastic coated aggregate is found to be decreasing the

percentage of plastics
(Eg.37% without plastic, 32% with 1% plastic and 29% with 2% plastic)
3.Soundness Test
The plastic coated aggregate, did not show any weight loss, improvement in the quality of the aggregate.

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.

present in the co-mingled plastic waste would d start

leaching.
2. During the road laying process
But the presence of chlorine will definitely release noxious HCL gas.

components of the road, once it has been laid,

are not inert.
It is opined that the first rain will trigger leaching. As the plastics will merely form a sticky layer, (mechanical abrasion).
once the road is started to be used will cause the release of fine polymer particles.
When air-borne, these will cause a particulate problem.

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 .
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

for flexible pavement, Indian High Ways (Indian Road Congress),

Vol.34, No.7. (July 2006).
S.S.Verma,(2008),Roads from plastic waste, The Indian Concrete Journal ,pp.43-47
Kajal , N K S Pundhir , Sangita and A Chandra(2007), Use of waste plastics and copper slag for low cost bituminous roads, Journal Of Scientific and Industrial Research,Vol.66.pp.938-994
IRC, “Tentative Specifications for Bituminous Surface dressing Using Pre-coated Aggregates,” IRC: 48-1972, Indian Roads Congress
ISI, “Indian Standards Specifications for Roads Tar”, IS: 215, Indian standard Institution