Did you know that an Indian has already invented a method to convert hazardous plastic waste into roads?
Prof. Rajagopalan Vasudevan is an ingenious innovator. He has
devised a technique of laying down roads made of plastic waste. Known as The
Plastic Man of India, Prof, Vasudevan has so far laid down more than
20,000kms of plastic roads in India. A simple and effective method that not
only eliminates the problem of plastic waste but increases the longevity of the
roads as well.
A professor of chemistry at Thiagarajar College of Engineering, near
Madurai, he insists that plastic gets a bad rap. Rather than an incipient
environmental calamity, plastic, in Vasudevan’s opinion, is a “gift from the gods”;
it’s up to humans to use it wisely. And he’s devised a way to transform common
plastic litter—not only thicker acrylics and bottles but also grocery bags and
wrappers—into a partial substitute for bitumen in asphalt.
Plastic
waste helps increase the strength of the road, reducing road fatigue. These
roads have better resistance towards rain water and cold weather. Since a large
amount of plastic waste is required for a small stretch of road, the amount of
waste plastic strewn around will definitely reduce.
Prof
R Vasudevan’s inclination to keep experimenting led to
another innovation. He decided to try creating a stone block with plastic
coating and, in 2012, ‘plastone’ took birth. A plastone
block is made from a mixture of waste plastic and stone. It has been found to
withstand more pressure and it resists water percolation. In the professor’s
department of chemistry they have made plastone blocks using granite and ceramic waste,
along with plastic waste.
Each
plastone
block consumes 300 plastic carry bags and around six PET bottles.
“It
is an easier way of disposing off plastic bottles which are found scattered all
over,” points out Dr. Vasudevan.
Almost
10% of solid waste consists of used materials that can be broken into
pieces and used in the making of plastone. Industrial slug can also be used in the
process. One of the foremost advantages of plastone is its non-porous nature and the ability
to prevent water penetration.
Plastone can be used for flooring,
especially outdoors. It can be a cheap and strong substitute for cement blocks,
which have a tendency to wither away in constant rain. It can be an effective
liner for water bodies, especially canals, preventing water seepage. It can
also be used to raise compound walls. A coat of emulsion can be provided to
make it colourful and attractive.
Sadly, our own country did not take him
seriously, and now the Netherlands is testing his idea and constructing roads
using his patented technology. The technique will involves molding of plastic waste using blue metal
into pre-fabricated bricks. These bricks help to build roads quickly.
This system will not only help to use up
dangerous plastics for a good cause, but also allow roads to be built quickly.
The plastic also provides durability to the roads as well as lightens the
surface load as plastic is lighter than traditional road material. The
maintenance cost will also be lower compared to asphalt roads. As per The
Guardian, these roads are also hollow, making it easier to install cables and
utility pipelines below the surface. Sections can be prefabricated in a factory
and transported to where they are needed, reducing on-site construction, while
the shorter construction time and low maintenance will mean less congestion
caused by roadworks. Lighter materials can also be
transported more efficiently.
India needs such innovations to tackle
its mounting environmental and infrastructure problems. It is surprising that
no mainstream media channel has tried to highlight this novel innovation yet.
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