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A house 3D printed from raw earth

itsnicethat.com

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Re: A house 3D printed from raw earth

#31
post #21

Earlier quoted context omitted.

So, it's going to have to switch to a subscription model eventually to continue to exist?

In my country, some poor people (unfortunately) live in mud houses. They periodically add a new layer of mud, as the old layers get eroded away. I imagine, this could be done by a robot for this 3D structure. Of course, this depends on house not collapsing under heavy rain.

or critters digging through walls and into your house

Re: A house 3D printed from raw earth

#32

Excellent idea as a proof of concept, and even beautiful in design. However one cannot help but wonder how structurally sound these materials are. Stress tests are needed to determine how well this would hold up over years of exposure to the elements before being produced en masse. For a sustainable alternative, homes made from repurposed shipping containers are a cost-effective solution for housing. They are made of…

I don't understand why people think shipping containers are a good idea for housing. They were never designed for this and will always be compromised when you come to put windows, doors, insulation and services in them.

Re: A house 3D printed from raw earth

#34
post #30

It seems to be a mixture of clay, salt, rice fibers and lime. So I guess the lime prevents erosion.

Mineralization. Effectively turns the aggregate into a kind of concrete. I would put a significant bet down that the energy cost of the lime is not accounted for in their 6kwh calculation.

Re: A house 3D printed from raw earth

#36
You might be more familiar with Mapei, the company that developed the material, TECLA. They are tight lipped about the actual ingredients and chemistry, but it seems to rely on soil that naturally contains cement or lime. The structure also requires a spray applied coating to ensure waterproofness.

https://www.engineeringforchange.org/news/finally-credible-p...

Re: A house 3D printed from raw earth

#37
post #7

Would this survive a rain storm or would it turn to mud? I couldn’t tell from the article.

> The collaboration between MC A and WASP has been supported by Mapei, a worldwide producer of construction materials, which has studied the clay materials and identified the key components within the raw earth mixture to create the final highly optimised printable product. https://www.3dwasp.com/en/3d-printed-house-tecla/ I think its safe to assume that the raw clay has been processed into a material more suitable f…

It says that it's been optimized to be printable, not for longevity or other characteristics needed in construction. What are the tradeoffs?

Re: A house 3D printed from raw earth

#38

Excellent idea as a proof of concept, and even beautiful in design. However one cannot help but wonder how structurally sound these materials are. Stress tests are needed to determine how well this would hold up over years of exposure to the elements before being produced en masse. For a sustainable alternative, homes made from repurposed shipping containers are a cost-effective solution for housing. They are made of…

"Shipping container housing" is the "nuclear energy" of housing solutions.

Re: A house 3D printed from raw earth

#39
post #38

Excellent idea as a proof of concept, and even beautiful in design. However one cannot help but wonder how structurally sound these materials are. Stress tests are needed to determine how well this would hold up over years of exposure to the elements before being produced en masse. For a sustainable alternative, homes made from repurposed shipping containers are a cost-effective solution for housing. They are made of…

"Shipping container housing" is the "nuclear energy" of housing solutions.

?

Re: A house 3D printed from raw earth

#40
I hope 3D printing homes will take off now that lumber prices are so ridiculous. The sudden cost increases in other materials will now hopefully give 3d printing space to achieve economies of scale.

Imagine homes that are printed with a 20 year life expectancy. Especially in America where I don't know many families that remain in the same house for 20 years. We could start going to the Japanese model of razing the house as an expected part of the land purchase. This has the added benefit of making it significantly easier to keep houses up to modern code.

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