Thursday , May 19 2022

Passengers are trying to produce more robust surfaces than recycled plastic


The total plastic from the 20th century. During the sixties of the last century, not even 10% were processed. Most often, plastic simply emits and falls to landfills. Part of the plastic garbage is in the wild, from where it can reach the river, and from them – into the sea. In order to get better, the problem of plastic waste will be even more difficult. For example, this year should be about 380 million. tonnes of plastic, that is, three times the size of bitumen, mostly used for the development of world roads – produces 120 million per year. not that.

These materials have similarities. Plastics are made of petroleum products, and bitumen is a by-product of petroleum refining. Both are polymeric – they consist of long molecules that have a strong bond. This provides the strength of the plastic, contributes to its durability. Such characteristics are also useful for road users. When laying the road, boiling bitumen strengthens the aggregate from crushed stone and stone and creates a coating, usually called asphalt. All this has led people to think: why not replace one polymer with another?

Products made of recycled plastic, such as gutters and sewer pipes. He is now interested in using it on the road. On September 11th in Zvoll, the Netherlands, a 30-meter bicycle track with 70 percent of the cycling trail was opened. recycled plastic, and the rest is polypropylene. This section is developing a new PlasticRoad product, which together with French company Total and oil is being developed by two Dutch companies – the company for construction of roads KVS and the manufacturer of plastic pipes Vavin.

PlasticRoad is a prefabricated product. The delivered factory segments are placed on properly prepared substrates such as sand. Segments are made hollow, can be entered into drainage systems, gas pipelines or transmission lines. The slats 2.4 meters long and 3 meters wide were built for the Zvole project. They are equipped with sensors for temperature measurement, bending and water outlet in drainage systems. Nearby, Githorne, another experimental biking trail is in progress.

Not only durable, but smart

If the idea fails, inventors expect to develop and produce segments made exclusively from recycled plastics. There will be a series of walkways, parking lots and railway platforms. Finally, it is planned to produce segments and roads. They can be equipped with sensors for traffic monitoring. In the long run, contours on plastic roads can be used to support autonomous transport, wireless power supply.

According to the company, prefabricated plastic roads should serve 2-3 times longer than usual. The price would also be reduced, mainly due to the fact that roads can be built almost three times faster. Sliding coating, including ruins, which are traditionally used for road construction, may also be included. In addition, modified old segments can be recycled. But engineers will monitor how they will hold the trace, as well as whether the hole creates a resonance that would cause too much noise on this road.

Recycled plastic can also be used in other ways – to mix with hot bitumen for the production of asphalt. Soon, such a sidewalk will be installed at the University of California, San Diego, on campus to test several specially designed plastic liners on roads developed by the British company MacRebur. According to Tobi McCartney, the 2015 company, which founded this company with a group of colleagues, all the blends are made of solid plastic for return, which often comes to the landfill.

The Makirbur plaster is cleaned, reinforced and finely stoked into the electricity or granules. When laying or repairing roads it is planned to carry out these works at the site, so that local roads can be built from local waste. Each mixture can contain about 20 different polymers adapted to specific surfaces. One blend can fit into the busbar, i.e. and For heavier transport, the other would provide greater flexibility in the port and due to wheel forces, it may be missing a tightened surface, for example in a transport ring. The coating can also be applied to a lot of heat or cold. And since the plastic is filled with small openings through which water enters the surface, the sidewalk is damaged, and the modification of the asphalt can reduce the pit.

Plastic mixtures of the company are already used in roads, parking lots and airport linings in different countries. The oldest project is probably a trip to Cumbria, northwest of England, where trucks often travel. He needed a new blanket for about six months, but, according to T. McCartney, his condition was great after mixing the plastic two years later. After refilling the lid, the old one can be recycled again.

Cleaning and sorting plastic from different polymers can be quite expensive, especially for low-value products, such as packaging. However, T. McCartney says the change in bitumen is economical, for, for example, in the British ton of bitumen can cost about 400 pounds. And for the standard carriage, the additive made from recycled plastic adds 300-350 pounds per tonne. Adding additives would not require an adequate amount of bitumen, which would save you money. Now the accessories are replaced with 5-10% bitumen, but some can be increased up to 25%.

T. McCartney found specialized recyclable plastic accessories, seeing how India sometimes shakes hands. Collected plastic waste is poured into the pit, accelerates to diesel and burns to form a solid mass. It is a rough option that pollutes the environment, but in some way it helps to solve the problem. Occasionally in India, crushed plastic is mixed into bitumen and road construction.

Australian travelers also begin to use recycled plastic. In the suburbs of Melbourne at Creigborne this year, a 300-mile section of the Raifield Prospect was completed from a material called "Plated". It produced more than 200 thousand processed. plastic bags and packaging, crushed 63 thousand. glass bottles and 4.5 thousand used paint. print cartridges. After mixing all components, 50 tonnes of recycled asphalt were produced, and a total of 250 tons of pavement were produced. The characteristics of this time will be assessed.

Stuart Billing, from Dovner who said the word, said that the cost of building roads from recycled materials is the same as traditional. However, it is expected that the road will be used longer and more resistant to intensive traffic.

Craigiebernai officials estimate that the amount of waste not deposited at the landfill would be spent in the way Raifield Prospect was installed in garbage containers in the last ten years. Local councils are most likely to receive complaints about road conditions, especially in the pits. Both in Australia and elsewhere, domestic households would probably be sorted and recycled for more plastics if they know they will be able to travel on even flat roads.

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