Plastic recycling has been a problem for decades. As reported in an earlier article, less than 10% of the plastic collected is recycled. Small efforts like caps to benches have gotten some notable news coverage but the bigger projects are often not known to the public. One of these projects is the use of plastics in the construction of roads. Most Americans have never heard of these efforts.
Plastic roads are constructed by using 100% recycled plastic. Plastic roads are famous for being a sustainable and cost-efficient choice over standard bitumen, concrete, and asphalt roads. This technology has been tested in many countries worldwide with advantageous outcomes. Plastic roads can last up to three times longer than standard asphalt roads.
Plastic roads possess various advantages when compared to standard asphalt roads. Their primary benefits are that they are far more durable, resilient, and flexible than asphalt roads. Other advantages include the fact that they are smoother and more comfortable to drive than asphalt ones, and they decrease the friction between tires and road surfaces. This can reduce noise levels, creating a more enjoyable trip.
The immediate cost savings of plastic roads is the cost of materials. They are constructed of far fewer materials than asphalt roads and need less energy and resources to construct. Thus, they can be constructed up to 50% cheaper than standard asphalt roads and need significantly less maintenance.
According to the World Economic Forum, plastic roads have been proven to be three times more durable than standard asphalt. This implies they can withstand harsher weather and are less vulnerable to potholes. A structural benefit over other paving materials is that plastic roads can turn and adjust to movements in the ground. Plastic permits the roads to stretch with the altering of the terrain and temperature.
However, these roads do have some potential negative environmental impacts that should be considered. a. Harmful gases are released during the construction of roads. b. After the construction, it has been discovered that the first rain will result in leaching, and a sticky layer is formed over the surface. c. The constituents of the road once are not inert.
Over time, plastic roads can filter harmful chemicals, such as phthalates, into the surrounding environment. Phthalates cause reproductive and developmental problems in humans and wildlife. Another problem is the creation of micro-particles created by the wear and tear of vehicles. When these particles mix with the air and water, they can be eaten by wildlife, ultimately pushing their way into the food chain.
Finally, plastic roads are non-biodegradable. It can take hundreds of years for these roads to break down. This means they may be a long-term contributor to pollution. The lifespan of plastic roads may be extended by careful maintenance, but over time they will eventually have to be disposed of or recycled.
Despite these potential drawbacks, plastic roads can still provide many environmental benefits. By combining recycled plastic with other sustainable materials, they can provide an environmentally friendly solution for roads and pavements. With careful consideration of the potential environmental impacts, plastic roads can be an effective way to reduce plastic waste and extend the life of our roads.
Here are a few countries that have implemented plastic roads: India-- Chennai was the first city to build plastic road in 2004. In another project, the foremost plastic road was built in Kambainallur. Since then, all central municipalities in India have tested this technology. For example, Pune, Mumbai, Surat, Indore, Delhi, Lucknow, etc., have all started replacing traditional roads with plastic.
United Kingdom-- In January 2019, the Department for Transport announced a £1.6 million trial of a plastic road technology developed by MacRebur, an asphalt enhancement company based in Scotland. MacRebur’s innovative approach to using waste plastics in roads has been adopted in over 30 countries, including the USA, New Zealand, Australia, Bahrain, Kuwait, and South Africa.
United States -- A stretch of highway in Texas uses plastic-infused asphalt, demonstrating a practical application of the technology. Additionally, Missouri, Virgina, Pennsylvania, California, and Hawaii have launched pilot programs to test the durability and environmental impact of roads repaved with plastic.
Pakistan-- In 2021, A 1-km distance of Islamabad’s Ataturk Avenue was completely rebuilt with plastic. The project was the result of cooperation between the Capital Development Authority and Coca-Cola Company Pakistan. It employed 10 tons of plastic bottle waste combined with asphalt.
