IOWA DEMOLISHES ITS FIRST 3D PRINTED HOUSE

hackaday.com ^ | November 29, 2023 | by: Kristina Panos

[Harmless Teddy Bear]

Gee, what a surprise.

[Harmless Teddy Bear]

Something wrong with their test protocol? Something wrong with how they deployed the stuff on site?

Someone smoked all the hemp rather then mixing it in?

[NorthMountain]

From what some of the other folks are saying about hemp fiber, that might improve the mix.

[Harmless Teddy Bear]

Hemp makes pretty good rope and cloth.

Everything else is kind of iffy.

[zeugma]

Apparently, they've learned something about the material properties of their highly experimental concrete mix, and now they're applying what they learned.

Well said. It is easy to laugh, but this really is how we learn. I'd probably have tried it on a smaller scale, but sometimes to really tell, you have to go all in.

[zeugma]

They are so absolutely certain that fetal stem cells are going to be the key to some extraordinary medical treatment.

Almost all stem cell research lines that I've read about than have been successful are from adults. Most use your own stem cells (from the nasal cavity for example). When you use your own cells, your body doesn't reject it as foreign.

[Pocketdoor]

They should just chop up all those windmill blades and use it as a fiber mesh.

[rxh4n1]

It wasn’t the design or the building method.

It was the materials. They used hemp ......................

Hempcrete? Go all the way and Pyekrete.

[Pelham]

Opus Caementicium, Roman concrete.

“Recent research has shown that the incorporation of mixtures of different types of lime, forming conglomerate ‘clasts’ allowed the concrete to self-repair cracks.”

[Red Badger]

After the first pig made his house of hemp, the others just kinda lost interest, and wandered off................😉

[Red Badger]

“I’m going to cough, and puff, and blow your house down.”

[Red Badger]

I don’t see how they thought that using an organic plant material to strengthen the mixture would last very long.

Even sawdust would have been better, and lasted a little longer...................

[mad_as_he$$]

Concrete ships? Why yes they did!

https://en.wikipedia.org/wiki/Concrete_ship

[bert]

“Hemp hurd is the woody inner core of the hemp stalk12. It is produced by breaking and scutching the stalk to separate it from the fiber1. Hemp hurd is also called shives or hemp wood1. It is not suitable for making materials that require long, strong fibers, but it has many other uses”.

The problem is the mixture. No Portland cement was used.

[Red Badger]

Exactly.

“It is not suitable for making materials that require long, strong fibers”

Which is what is needed, long strong fibers.

But it is organic and will deteriorate rather quickly, exposed to the weather, sun and rain.

This was doomed from the get go..................

[1of10]

“lost interest, and wandered off......”

off to get some snacks ?

I hear the 3erd pig was Colombians .... and those bricks ...
well ... they stacked up pretty good. Until the Chinese pigs swamped the market with fentynal ... then it was just BLTs for everyone.

But really ... why would anyone spend $$ and time to try and build a house out of hemp?
Hemp has a lot of uses ... but straw houses isn't one of them.
Why not use old tires like they used to?
earth homes ... hippy dippy BS

[sjmjax]

Funny. I’ve actually dove and snorkeled the wreck of the SS Sepona in the Bahamas.

An acquaintance of mine tried building a Ferro-cement sailboat in his backyard. Finished the hull but never completed or launched the boat. Would have been interesting.

[x]

The house was being constructed from Hempcrete, which a biocomposite of hemp hurds, and either lime, sand, or pozzolans that is used in Europe and Canada.

Cool. So now we're back to cardboard.