PERI builds a building with a 3D printer

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The 380 square meter complex in Germany will be the largest printed residential building in Europe.Construction will take a total of six weeks at the Wallenhausen site in Bavaria.

Thomas Imbacher, Managing Director Marketing and Innovation at PERI Group said: “By printing the first apartment building in Germany, we demonstrate that this new construction technology can also be used to print homes on a large scale.

“In terms of 3D construction printing, we are opening up additional areas of application to a whole new level.”

The materials used to produce the printable concrete come from HeidelbergCement.

PERI uses the BOD2 gantry printer which has a printhead that moves in three axes on a solidly installed metal frame.

The printer takes into account pipes and fittings for water, electricity, etc. which must be installed later.

The BOD2 has been certified in such a way that it is possible to perform work in the printing area while printing is in progress.

This means that manual labor, such as installing empty pipes and fittings, can be easily incorporated into the printing process.

The “i.tech 3D” material used to print the building was developed by HeidelbergCement specifically for 3D printing.

Dr Jennifer Scheydt, Head of Engineering and Innovation at HeidelbergCement, said: “The properties of i.tech3D are tailored to the specific requirements of construction 3D printing using concrete.

“Our material has excellent pumping and extrusion characteristics and works great with the BOD2 printer.”

Two operators are required to run the printer. The print head and print results are monitored by a camera.

With a speed of 1 m / s, the BOD2 is currently the fastest 3D construction printer available on the market, taking approximately five minutes to complete 1 m² of a double skin wall.

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