presentation deals with possibility of use of plastic in flexible pavements

1. Asphalto-plastic Roads
Mid term Report

2. Achievements of Project
Second prize at north INDIA
level for Innovation
Trophy, winning certificates and
Cash Award of worth Rs. 12,000

3. Introduction to Project
• The project revolves around the utilization of waste materials or
affluent end products which are not only useless but are a serious
threat to our environment in manufacturing of paving materials
used in the construction technology. There are source of such
waste products resulting from social and industrial usage. Few can
be listed such as plastic polythins, bottles, bags, packing and
other plastic products.

4. It carries out the study of different modes of behavior of waste plastics as construction materials in modern era.
The variation in the properties, characteristics and composition of these materials are studied by taking the samples
from the different parts of the district.
Improvement in the strength of Rural Roads:- Different methods to be adopted are studied to improve the
flexural strength of rural roads by using low cost and waste materials.
Waste Plastic as alternate to Bitumen:- As per the studies, bitumen can be partially replaced in flexible pavement
with plastics.
Improved properties of aggregates:- natural aggregates has been improved in consideration of durability and fire
resistance with film Protection. Various methods involved are deeply studied to improve their behavior with bind
mixers.
Key Features-

5. 1. Importance of the project
Every project whenever is taken in hand or thought off, its necessity always comes to our mind at a first instance.
This project is also not with a difference. The following points are enlisted to highlight its importance:
Protection of Environment:- plastic, due to its nature when mixes with the environment, contributes to various to
various health hazards. So by their utilization in construction industry, health of public is not endangered.
Conservation of Natural Resources:- Natural resources cannot be exploited to an unlimited extent. Use of materials
such as recycled aggregates can reduce our dependence on natural resources.
Cost Reduction:- By utilizing the waste products, cost of the pavements get considerably reduced. Major factors
contributing to the cost of “all weather road” have been diminished with sustainable technology.
Rural roads Concept:- This project gives emphases to construct all weather rural roads under Pradhan Mantri Gram
Sadak Yojna for each and every remote villages in pan India with a quite reasonable cost for the people with no
connectivity to rest of India.
Bharatmala project’s Consideration:- For providing a world class roads connecting metropolitan cites of India, this
innovation is quite helpful.

6. Pavements – basic necessity
A pavement is a structure that functions as facilitating
movement of individuals, masses or goods through
simple amenities such as carts, cyclists, pedestrians to
the complex, heavy vehicles like passenger cars, trucks,
buses, trams etc. road is a thoroughfare, route, or way
on land between two places that has been paved or
otherwise improved to allow travel by foot or some form
of conveyance. Houses use a range of
different roofing systems to keep precipitation such as
rain from getting into the dwelling space. Houses may
have doors or locks to secure the dwelling space and
protect its inhabitants and contents from burglars or
other trespassers. In other words, House i.e. shelter is
one of our basic needs: it is a place that can protect us
from the elements, keep us warm and safe, and give us
the encouragement to satisfy our other needs as shown.

7. Typical layers of flexible pavements
Binder course This layer provides the bulk of the asphalt concrete structure. Its chief purpose is to
distribute load to the base course The binder course generally consists of aggregates having less asphalt and
doesn’t require quality as high as the surface course, so replacing a part of the surface course by the binder
course results in more economical design.
Base course The base course is the layer of material immediately beneath the surface of binder course and it
provides additional load distribution and contributes to the sub-surface drainage It may be composed of crushed
stone, crushed slag, and other untreated or stabilized materials.
Sub-Base course The sub-base course is the layer of material beneath the base course and the primary
functions are to provide structural support, improve drainage, and reduce the intrusion of fines from the sub-
grade in the pavement structure If the base course is open graded, then the sub-base course with more fines can
serve as a filler between sub-grade and the base course A sub-base course is not always needed or used. For
example, a pavement constructed over a high quality, stiff sub-grade may not need the additional features
offered by a sub-base course. In such situations, sub-base course may not be provided.
Sub-grade The top soil or sub-grade is a layer of natural soil prepared to receive the stresses from the layers
above. It is essential that at no time soil sub-grade is overstressed. It should be compacted to the desirable
density, near the optimum moisture content.

8. Material Selection Criteria

9. Construction materials of project
Aggregates Asphalt

10. PLASTICS and its SOURCES

11. Our Improvement
In the construction of asphalt pavement, hot bitumen is coated over hot stone aggregate mixed, laid and
rolled. Bitumen acts as a binder. Yet when water is stagnated over road, it penetrates and results in pot
holes, a defective spot on the pavement. Use of plastic (virgin as well as waste) to modify the bitumen
and also the use of plastic coated aggregates are being studied to improve performance of the pavement.
Bituminous mixes used in the surface course of the bituminous pavements are being improved in their
performance by incorporating various types of additives to bitumen. Some of the properties improved are
durability, fatigue life, resistance to rutting, softening point, visco elastic property etc.
Plastics waste like PE, PP and PS is coated over stone aggregates and the PCA was mixed with bitumen
and the mix was used for flexible pavement construction. Higher percentage of plastic waste (10-15%)
can be used without separation. Detailed studies were done on this direction. Various tests were carried
out to find the characterization of the following.

12. Testing Results
Loss Angeles
Abbrasion Value Test
Decrease in Abbrasion value
indicating less percentage wear of
aggregates.
Impact Value Test
Decrease in Impact value indicating
greater toughness of aggregates.
Aggregate Crushing
Value Test
Decrease in Aggregate Crushing
value indicating high resistance to
crushing of aggregates.
0
5
10
normal aggregatesplastic coated aggregates
LA abbrasion Value
(%)
LA…
5.5
6
6.5
Normal
Aggregates
Plastic Coated
Aggregates
Impact Value(%)
Impact
Value(%) 0
20
40
Normal
Aggregates
Plastic Coated
Aggregates
Aggregate Crushing
Value(%)
Aggregate
Crushing
Value(%)

13. Advantages
• Use higher percentage of plastics waste Reduce the need of bitumen by around
5-10%
• Increase the strength and performance of the road
• Avoid the use of anti stripping agents
• Reduce the cost by nearly thousands per kilometer of single lane road
• Carry the process in situ
• Avoid industrial involvement
• Avoid disposal of plastics waste by incineration and land filling
• Generates job for public health workers
• Add value to plastic waste
• Develop a technology, which is eco‐friendly

14. Future Concerns
In the construction of asphalt pavement, hot bitumen is coated over hot stone aggregate mixed,
laid and rolled. Bitumen acts as a binder. Yet when water is stagnated over road, it penetrates and
results in pot holes, a defective spot on the pavement. Use of plastic (virgin as well as waste) to
modify the bitumen and also the use of plastic coated aggregates are being studied to improve
performance of the pavement. Bituminous mixes used in the surface course of the bituminous
pavements are being improved in their performance by incorporating various types of additives to
bitumen. Some of the properties improved are durability, fatigue life, resistance to rutting,
softening point, visco elastic property etc.
Plastics waste like PE, PP and PS is coated over stone aggregates and the PCA was mixed with
bitumen and the mix was used for flexible pavement construction. Higher percentage of plastic
waste (10-15%) can be used without separation. Detailed studies were done on this direction.
Various tests can be carried out to find the characterization of the following.
1. Different waste plastics used for coating over the aggregates
2. Plastics coated aggregate
3. Plastics coated aggregate mix with bitumen
4. Plastics coated bituminous road scrap

15. Conclusions:
Better engineering properties of aggregates,
Improved strength and performance of roads.
Utilization to waste plastic, avoiding disposal
in incineration and land filling.
Eco-friendly technology, adding value to waste
plastic.

16. THANK YOU
Robin Singh
1614153
Satinderpal
Singh
1614154
Siddharth Popli
1614155
Sukhchain
Singh
1614156