Meet Dr Rajagopalan Vasudevan, the Padma Shri Awardee who built a whole road out of plastic, and now even the government is following him. Here’s how he made it possible and inspired the rest of the world to follow suit. By Tanvi Jain
Dr Rajagopalan Vasudevan, 2018 Padma Shri awardee, 1974 batch PhD scholar, master’s in science from Madras University, and a professor at Madurai’s Thiagarajar College of Engineering is the man behind this unique creation.
How did he do this?
He fused the tar with plastic and then used the polymerised mix to make roads. Per kilo of stone required 50 grams of bitumen, one-tenth of which was a plastic waste, thereby reducing the amount of bitumen to be used. Bitumen is a black viscous mixture of hydrocarbons obtained naturally or as a residue from petroleum distillation.
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How is it beneficial?
Plastic not only increases the aggregate impact value — the measurement of the toughness of road, and ability to take the sudden shock from load — but also improves the quality of flexible pavements. Plastic roads are twice as strong as tar roads, as plastic makes them non-susceptible to disintegration and potholes. Unlike conventional roads, plastic roads are not affected by moving or stagnant water.
What followed later?
The genius idea was soon undertaken by panchayats, municipalities and even the National Highways Authority of India (NHAI). The Ministry of Road Transport had announced last year its plans to include plastic waste in the construction of highways, especially the national highways that lie within a 50-kilometre border of urban areas, with a population of five lakh or more.
What do the numbers say?
Reportedly, India already has over 1,00,000 kilometres of roads made of plastic, and with time more and more regions are adopting the idea. Chennai’s Nungambakkam area was the first to build a plastic road in 2002. And after successful demonstrations, other states like Rajasthan, Maharashtra, Manipur, Kerala, and Goa, also followed suit.
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Plastic–whether it be for a container, a wrapper, or the product itself–has become an everyday part of our lives. This isn't necessarily a bad thing–plastic is also the material diabetics use for their disposable syringes; arthritic patients have for their replaced hips; and construction workers wear to protect their heads. But when plastic reaches our waters, whether it be plastic bags or drifting fish nets, it poses a threat to the animals that depend on the oceans for food. To a sea turtle, a floating plastic bag looks like a jellyfish. And plastic pellets–the small hard pieces of plastic from which plastic products are made–look like fish eggs to seabirds. Drifting nets entangle birds, fish and mammals, making it difficult, if not impossible to move or eat. As our consumption of plastic mounts, so too does the danger to marine life. #plastic #sea #plasticinsea #awareness #fishes #fishesfishesworld #plasticfree #helptheocean #savethefishies #garbage #seagarbage #diversity #microplastic #dumpingplastic #savefish #beautifulsea #noplastic #biodiversity #garbagepatch #greatgarbagepatch #photo #seaphoto #ocean #plasticocean
Dr Vasudevan’s idea not only gained popularity in India but in other countries as well. For example, certain parts of Indonesia like Bali, Surabaya, Bekasi, Makassar, Surakarta, and a few others, built roads from the plastic-asphalt mix. Moreover, Netherlands also tried something similar, and the United Kingdom reportedly announced an investment of over INR 14 crore for the trial of this plastic technology.
Why is it the need of the hour?
India generates over nine million tonnes of plastic every year, and over 26,000 tonnes every day. Out of this at least 40 per cent remains uncollected, and 43 per cent is used for packaging. The country is the 15th biggest plastic polluter globally. Annually, over 500 billion plastic bags are used all over the world, and over 8.3 billion plastic straws pollute the beaches. The scary numbers also predict the number of plastics in the sea to soon exceed the number of fish.