Renca Recycles Industrial Waste into 3D Printable Cement

Russian construction company  Renca , has developed an eco-friendly cement for 3D printing.

According to the manufacturers, production of the material, known as géobéton (geoconcrete or geocement), reduces carbon dioxide emissions by up to 90% when compared to the traditional mode of making cement.

By using recycled materials, the material also creates at least 60% less impact on the environment than its Portland counterpart.

The hope is to use the material to 3D print buildings, particularly in Dubai –  a city that is aiming to 3D print 25% of its buildings by the year 2030.

Made from ash and slag

Renca’s géobéton is made from the ash produced by burning powdered materials like coal, and granulated blast slag created as a by-product of separating metal from its ore.

In addition to its low-impact on the environment, the resulting material has a range of advantages over traditional Portland cement, including it’s resistance to water and fire.

Properties of geocement . Screenshot via: geocement .ru

3D printing with Apis Cor

3D printing tests of the geocement have been performed by the Apis Cor 3D printer. Also based in Russia, Apis Cor made headlines at the beginning of March 2017 by 3D printing a house in just 24 hours.

Speaking to The National newspaper, Dudnikov explains the qualities needed to make géobéton 3D printable. He says,

It should be fluid enough for the 3D printer and it should set very quickly. When the first layer is in place, the second layer will come straight after. To achieve this with normal concrete you have to add a lot of additives, so it becomes expensive. With geopolymer concrete, you can adjust the properties of the cement with the amount of raw materials you add. It’s easy to regulate, achieves fast settings and it is easy to use in these [hot] temperatures.

An international trend

Other companies in the business of 3D printing buildings include China’s Winsun, who also have interest in the UAE, and Dutch company CyBe.

Designers at the Institute for Advanced Architecture of Catalonia (IAAC) in Barcelona are one institution also looking to create more eco-friendly materials for 3D printing. In a collaboration with ACCIONA, a company dedicated to Spain’s sustainable infrastructure, the IAAC is responsible for the “world’s first” 3D printed bridge, which is made from finer-reinforced concrete.

Read more at: 3D Printing Industry

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Taxonomy

• Technology
• Environment
• Concrete
• Concrete Mixing
• Sustainability
• Waste Management
• Printers
• 3D Modelling
• Advanced Materials