Tuesday , January 26 2021

Roaders are trying to produce stronger surfaces than recycled plastics



Plastic is made from the 20th century, but in the 1960s, 10% was not processed, usually plastic is simply thrown out and dumped into landfills, and some plastic garbage is dumped in nature, from there it can reach the rivers and from there to the sea. Will be even more serious.For example, this year should be about $ 380 million.Tons of plastic, therefore, three times more than bitumen, used primarily for the development of roads in the world – it generates $ 120 million a year.

These materials have similarities. Plastics made of petroleum products, bitumen is a byproduct of petroleum refining. Both are polymeric – they consist of long molecules that have a strong bond. This ensures the strength of plastic, contributes to its durability. Such features are good for road users as well. When laying the road, warm bitumen strengthens the accumulation of crushed rocks and stones and produces a coating, commonly referred to as asphalt. All this made people think: why not replace one polymer with another?

Products made of recycled plastic, such as gutters and sewage pipes. Now he is interested in using it on the road. On September 11, a 30-meter bike path was opened in Zwolle, the Netherlands, with a 70-percent bicycle trail. Plastic is recycled, and what remains is polypropylene. In this section, a new product was developed, PlasticRoad, which together with the French oil and gas company Total was developed by two Dutch companies – the KWS road company and the Wavin plastic pipe producer.

PlasticRoad is a prefabricated product. Delivered to sections made in the plant are placed on properly prepared substrates such as sand. Sections are hollow, they can be introduced into drainage systems, gas pipes or power lines. Sections of a length of 2.4 meters and a width of 3 meters were made for the Zebulia project. They are equipped with sensors for measuring temperature, bending, and water production in drainage systems. Nearby, Githorne, another experimental bike trail is in full swing.

Not only durable, but also smart

If the idea fails, inventors expect it to develop and manufacture sections made entirely of recycled plastic. There will be a series of hiking trails, parking lots, and railway platforms. Finally, it is planned to produce sections and roads. They can be equipped with sensors to monitor traffic. In the long run, contours on plastic roads can be used to support autonomous, electrically powered wireless transport.

According to companies, prefabricated roads should be used 2-3 times more than usual. The price will also decrease, mainly due to the fact that the roads can be built almost three times faster. You can include a slick coating, including rubble, traditionally used for road construction. You can also change the old and changed segments. But the engineers will keep track of how the path is going to wear, and if the hole creates a resonance that will cause the road to cause too much noise.

Recycled plastics can also be used in other ways – mix it with hot bitumen for asphalt production. Soon, such a sidewalk will be located at the University of California, San Diego, on campus to examine some special designed side-by-side plastic coatings developed by the British company MacRebur. According to Toby McCartney, 2015 the company, which has established the company with a group of colleagues, all blends made of hard plastic reproducible, which often comes to landfill.

MacRebur plaster is cleaned, and fine scratches are cracked into chips or granules. When laying or repairing roads, it is planned to carry out these works on the site, so that local roads can be constructed from local waste. Each mixture can contain 20 different polymers, adapted to specific surfaces. One combination may fit a bus route, that is. y for heavy transport, the other will provide greater flexibility and because of lateral force forces, the taut surface may be lacking, eg transport ring. The coating can also be applied to a lot of heat or cold. And because the plastic is filled with small holes through which the water enters the surface, the pavement is damaged, changing the asphalt can reduce the hole.

The company's plastic blends are already used for roads, highways, and track routes in various countries. The oldest project is probably the road in Cambria, north-west England, where frequent passenger trucks. He needed a new cover for about six months, but, according to McCartney, his condition was excellent after mixing plastic two years later. Once the cover is refreshed, you can recycle the old one.

Cleaning and sorting of plastics made of different polymers can be quite expensive, especially for low value products such as packaging. But T. McCartney says that the change in bitumen is economical, because, for example, in the UK a ton of bitumen can cost about 400 pounds. And on the standard road pavement, the additive made of recycled plastic adds 300-350 pounds per tonne. The addition of a supplement will not require an adequate amount of bitumen, which can save you money. Now additions are replaced by 5-10% bitumen, but some can be increased to 25%.

T. McCartney came up with special accessories for recycled plastic, seeing how pits are sometimes treated in India. Collected plastic waste is poured into a pit, dipped in burned diesel fuel to form a solid mass. This is a rough option that pollutes the environment, but somehow helps resolve the problem. Occasionally in India, a smashed plastic is mixed into bitumen and road construction.

Australian travelers also start using recycled plastic. In the suburbs of Melbourne at Creighborne this year, a 300 mile section of Reifield Prospect was completed from the material called "Coated." It produced more than 200 thousand processed. Packed nylon bags, crushed 63,000. Used glass and paint bottles from 4,5 thousand. Printer Cartridges. After mixing all the components, 50 tons of recycled asphalt were produced, and a total of 250 tons of road sidewalks were produced. The characteristics of this road will be assessed.

Stuart Billing, from Dunner, who took the floor, said the cost of paving roads from the same traditional recycled materials. However, it is expected that the road will be used longer and more durable for intensive traffic.

Craigiebernay officials estimate that the amount of waste that was not deposited in the landfill was spent on the way Rayfield Prospect was built into garbage containers for the last ten years. Local councils are expected to receive complaints about road conditions, particularly in pits. And in Australia and elsewhere, the households would probably have been arranged and recycled to more plastic if they knew they could travel on smoother roads.


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