This document summarizes the use of plastic waste in highway construction. It discusses how plastic waste like carry bags, bottles, and cups are collected, shredded, and mixed with hot bitumen to form a coating over aggregate materials for use in road surfaces. Using plastic waste in this way provides benefits like increased road strength and lifespan while helping reduce plastic waste. However, there are also safety concerns about toxic chemicals leaching from the plastic during the cleaning, mixing and road laying processes. Overall, the document examines the basic process and advantages of using plastic waste in road construction but notes some disadvantages relating to potential environmental toxins.

1. Topic- Plastic Material
Use In Modern Highway
Name- Sayan Saha
Roll- 11901320033
Department- Civil Engineering
Sem- 7th

2. INTRODUCTION
Plastic use in modern highway construction is not new.
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 bottles that are collected from garbage dumps
as an important ingredient of the construction material.
When mix with hot bitumen, plastics melt to form an oily
coat over the aggregate and the mixture is laid on the
surface like a normal tar road.

3. What is plastic?
A plastic material is any of a wide range of
synthetic or semi – synthetic organic
amorphous solids used in the manufacture
of industrial products. Plastic are typically
polymers of high molecular mass and may
contain other substances to improve
performance.

4. PLASTIC WASTE , HAZARDOUS TO
EARTH
 Discard thin plastic carry bags are a
menace. In town they block drains , cause
flooding , strewn across fields, they block
germination and prevent rainwater
absorption by soil. Recycling plastic by
melting releases fumes, and is only possible
3-4 times also toxic contents might leak
into environment so shredded plastic is a
great use for the roads and our
environment.

5. Basic Processes
 Segregation-
Plastic waste collected from various sources must be separated from other
waste.
Maximum thickness of 60 microns.
 Cleaning Process-
Plastic waste get cleaned and dried.
 Shredding Process.
The plastic waste will be shredded or cut into small piece.
The different types of plastic wastes are mixed together.
 Collection Process.
The plastic waste retaing in 2.36 mm is collected.

6. Material Used-
 Aggregate-
Aggregate of 20mm , 10mm.
Stone Dust and Lime as Filler.
 Bitumen-
60/70,80/100grade bitumen.
 Waste plastic –
Waste plastic in the shredded form.

7. Construction of plastic roads
 Step 1- The aggregate is heated to
170°c in the mini hot mix plant.
 Step 2- The shredded plastic will be
added in equal proportions.
 Step 3- Immediately the hot bitumen
60/70 or 80/ 100 grade (160°c) is
added.
 Step4- The mixture is transferred to
the road. The road is laid In
temperature between 110°c to 120°c.

8. Advantages of Plastic Roads
 Use higher percentage of plastic waste
reduces the need of bitumen by around
10%.
 Increase the strength and performances
of the road.
 Generate jobs for rag pickers. Develop a
technology, which is eco-friendly.
 Improvement in fatigue life of roads .
 Reduced penetration and ductility, a
higher softening point, less rutting and
cold cracking.
Disadvantages of Plastic Roads
• During cleaning process toxics
present in the plastic waste would
start leaching.
• During the road laying process in
the presence of chlorine will
definitely release noxious HCL gas.
• After the road laying the first rain
will trigger leaching.

9. Conclusion-
 Plastic will increase the melting point of the bitumen.
 Use of this technology not only strengthened the road construction
but also increased the road life.
 Help to improve the environment.
 Plastic roads are good for India's hot and extremely humid climate

10. THANK
YOU