ragamufin t1_iv0rk4z wrote
Reply to comment by Parabola_Cunt in Apis Cor may be America's most advanced 3D printing construction company, yet it is shunned by traditional capital markets; 8 years after being founded, it still relies on crowdfunding websites. by lughnasadh
There is no real green concrete tech. Meaning there is not a technology within 10x current concrete mfg and pouring cost
Parabola_Cunt t1_iv16ako wrote
The innovations happening with algae based concrete are promising. Very renewable… and if algae is involved in more food and energy supplies in the future, this is a great end of life use case for algae. If those other thing don’t happen though, it would be really difficult to get the volume you’d need to make it work for concrete at scale.
(This reminds me of how sawdust saw a new use case in transporting blocks of ice in the late 1800s before modern refrigeration emerged. Totally new end of life purpose for an otherwise thrown away product. Sawmills in the northeastern USA got a whole new revenue stream).
We’re probably still like 10+ years from it being at a point to scale to the size we need to eliminate regular concrete, but the idea and value are both there. They just need to show people.
sassy-jassy t1_iv1hqk6 wrote
The only thing superior about it is the decreased labor and until it finds a way to get a lot cheaper or framers get a lot more expensive, it won’t be a major contributor but someday that’ll probably change. Fine tuning the printer to the point where it’ll print the final surface is probably counter productive, to be that smooth it would slow printing down to a crawl at best. The fact that you can run a trowel over it and smooth it out after printing already negates trying to print the finished product, once they find a way to automate making it smooth it’ll help a lot. Otherwise they can always throw up dry wall to cover it.
Curved walls aren’t new and you can get them as intricate as you want you just have to pay for what it costs, which is why most buildings have straight walls it’s a lot cheaper and they’re trying to make a profit on what they build. Not to mention plumbers and hvac workers really like straight walls for obvious reasons and it seems the floor would be a slab so not a lot of other choices. That does only limit some of the walls but artistic work and design has always been the forefront that pushed change not the ability to make the art cheaper, meaning most people don’t care much about the shape of the walls.
It is definitely safer but you’re also trying to improve one of the safer parts of the construction industry. As for how long it lasts it wouldn’t differ much from a brick house, and a wood frame house isn’t nearly as durable but longevity of both types of house will typically come down to maintenance and care more than materials.
The algae based concrete is a new idea for me so I thank you for something new I can learn about. As for its marketability it is a ways away from replacing concrete, assuming that it passes the ASTM protocols and standards this year it’ll have to figure out how to scale it to compete with one of the largest industries in the country and world. They do say they’re working on that but I think they underestimate the size of this hurdle. It’ll definitely scale up simply in terms of making larger batches but it’s already a big set back that their product is more labor to produce and probably more skilled labor to grow the algae. From the articles I’ve read so far it looks like they plan to market it as a small scale green alternative with an emphasis on selling pre-made products directly to consumers. This will definitely pad their bottom line and it also shows they see the cost difference between their product and traditional concrete. However with significant government incentive it’s possible that they cause some major changes to the industry in the coming years
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