IIT Guwahati develops 3D printer that uses construction waste to print furniture

IIT Guwahati: The 3D printer is capable of printing components up to 1 m long, 1 m wide and 1 m tall

IIT Guwahati develops 3D printer that uses construction waste to print furniture IITG: IIT Guwahati 3D printer to use construction waste to print furniture (image source: official Facebook page)
Press Trust of India | Jan 24, 2022 - 4:18 p.m. IST
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GUWAHATI: Researchers at the Indian Institute of Technology (IIT) Guwahati have developed a 3D printer that uses construction waste to print furniture. The concrete printer, jointly developed by IIT Guwahati and Deltasys E-Forming, is capable of printing components up to 1 m long, 1 m wide and 1 m tall, as per an official statement. The researchers used specially-developed printable concrete containing industrial wastes as binders to build 3D printed furniture with a seating height of 0.4 m, a width of 0.4 m, and arch-shaped support.

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The entire unit was printed layer by layer at an 80 mm per second speed, with each layer having a 10 mm height. After the unit was printed, it was covered with moist gunny bags for seven days to cure before being used, the statement issued by IIT Guwahati on Monday said. "Traditionally, these structures were mould cast which requires more concrete material, labour, and formwork preparation. However, with 3D concrete printing, optimised designs are printed with 75 per cent less concrete and without the need of mould," the statement said.

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IIT Guwahati director TG Sitharam said 3D printing of concrete can be a technological solution for reducing carbon footprint in the construction industry. "From an Indian context, a techno-economic analysis must be carried out that take into account not only the environmental sustainability but also aspects relating to cost, quality, labour, and maintenance associated with 3D printing," he said. The researchers aim to design high-performance concrete mixes made from industrial wastes for printing such complex structures, said professor Biranchi Panda of the Department of Mechanical Engineering. "We showcased how material-efficient structures can be produced in our lab scale 3D printer," he said.


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