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Architecture students create new method for 3D printing concrete – Building Design + Construction (press release) (registration)

by • January 25, 2016 • No Comments

The 3D printing device has been the “It” piece of innovation for the past couple of years. From creating useful little trinkets around the house like doorstops, drink coasters, and tablet stands, to additional complicated items like showerheads, platform jacks, and articulated lamps, the 3D printing device is rapidly shedding its label as a novel piece of innovation and transforming into a thing much additional useful and significant.
For example, if the astronauts aboard the International Space Station require a tool they don’t have, the $10,000 per kilogram price tag attached to launching a thing into orbit precludes them of only sending one up. So, what do they do? They 3D print the tool they require, of course.
3D printing devices are advancing so rapidly that Nike believes a upcoming of 3D printed athletic shoes is not far off.
But what of the here and now? Recently, four Masters students of Bartlett School of Architecture created a new method for 3D printing concrete structures. Their new method allows for for these structures to be self-assisting and created on a sizeabler scale than preceding.
The team, known as Amalgamma, is created up of Francesca Camilleri, Nadia Doukhi, Alvaro Lopez Rodriguez, and Roman Strukov. Their project, Fossilized, combines two methods of concrete 3D printing, according to ArchDaily.
Fossilized combines the extrusion printing method and the powder printing method, as the team explains in its portfolio.
“This combination of techniques has given rise to a form of assisted extrusion, whereby the concrete is extruded layer-by-layer over a bed of assist material,” Amalgamma writes. “Due to the assist, the resulting extruded concrete is of a much higher resolution with sizeabler overhangs than the results generated by the current practices studied.
“The assist extrusion method has therefore presented the opportunity to create forms that are additional varied and additional volumetric, as opposed to the quite straight vertical forms so far achieved in practice.”

Image: © Amalgamma

Amalgamma goes on to say that while it yet can not be possible to print an entire structure of begin to finish, a thing like a floor-wall-ceiling assembly or a stair-floor-wall assembly printed as one whole piece may quite well be possible with this method.
Most 3D printing systemes that are utilized currently for construction print sizeable pieces and and so bring them to the construction site to be assembled. This is due to the fact that creating an entire assembling at once may mean that the 3D printing device may require to be sizeabler than the assembling it was constructing.
Here is how the Fossilized system works: concrete is extruded of a robotic arm one layer at a time and is laid over a bed of granular assist material, that is deposited by a 2nd tool on the same robotic arm. So, a binder is incorporated to harden pieces of the granular assist. This creates a multi-material piece.
Once the version is printed, it and so requires to be extracted of the bounding box. When it is dry adequate, the bounding box, as well as the assist material, is removed. The version is and so cleaned with compressed air and moved to a ventilated area to harden.
The upcoming step Amalgamma can be working on is to integrate multiple materials into the printing system and combine the granular assist with the printed concrete.


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