Engineers come up with machine to make good use of plastic waste

ST Correspondent
Tuesday, 10 October 2017

Pune: Even though plastic is hazardous to the environment and its usage has reduced in recent times, recyclable plastic is used to make jeans, toys and many other things, while non-degradable plastic, which is below 50 microns, is thrown in the waste. However, a group of engineers are recreating the use of non-degradable plastic by making components out of concrete products.

Pune: Even though plastic is hazardous to the environment and its usage has reduced in recent times, recyclable plastic is used to make jeans, toys and many other things, while non-degradable plastic, which is below 50 microns, is thrown in the waste. However, a group of engineers are recreating the use of non-degradable plastic by making components out of concrete products.

The Teeaara Globalizers is a group of mechanical engineers from Jayawantrao Sawant College of Engineering (JSPM), including Tanveer Inamdar, Animesh Biswas and Vrushabh Wagh, who are working on the problem of non-degradable plastic. Inamdar mentions that on earth’s surface, about 40 per cent waste is plastic waste, out of which from which 20-30 per cent is non-degradable plastic waste.

Since 2016, as a part of a college project, they started to work on a working prototype -’Plastic synthesise Concrete Brick Manufacturing Machine’ and completed it in 2017. This machine was designed with a basic agenda to reduce plastic waste and its effect on the environment.

This machine can create various concrete products like concrete brick, paving block, concrete grill, road dividers, concrete benches and many other concrete elements by utilising non-degradable plastic, which has a micron level below 50.Inamdar said, “To overcome the drawbacks associated with the plastic problem, the machine is designed to manufacture concrete components with the composition of concrete and plastic waste. Any type of plastic waste can be used to make a concrete product.”

The set up is made in such a way that different types of moulds can be inserted into the machine to create various types of concrete products. It is more efficient than the traditional manufacturing of concrete products, Inamdar added.

Design of the machine
In case of Plastic synthesise Concrete Brick Manufacturing Machine, all kinds of plastic waste are cut into very fine particles with the help of a designed specialised cutter, which can operate on all types of plastic material.

Fine particles of plastic are then mixed with cement and fly-ash. Waste from the boilers and special chemicals are mixed until it gets the required homogeneity.

The homogeneous mixture is then compressed in a specialised extruder, by which the mixture get the desired compactness, which will help to increase the strength of brick.

After the extruder process is done, the mixture goes into the mould and it is taken out of the machine after cooling down.

The advantages of this machine is that the sound absorption capacity of the brick increases, almost 30-35 per cent of waste plastic is used in manufacturing the concrete products, it also reduces the cost of manufacturing from Rs 8 to Rs 6, the manpower is also reduced, it matches ISO standards and up to 1 kg of plastic can be used to manufacture one brick.

The only disadvantage of the plastic made concrete brick is that it cannot  transfer heat like a normal concrete brick.

“We have submitted our documents and the design to the government and soon the product will be available in the market,” Inamdar said.

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