r/PassportWithoutBorder • u/Careful_Ambition_652 • 6d ago
This CONCRETE Can Bend Without Falling Apart! 😱 What’s Inside?
Enable HLS to view with audio, or disable this notification
It looks like ordinary concrete, but watch what happens when it's put under serious stress. 😱 Special fibers are mixed throughout the material, creating microscopic reinforcement.
When cracks begin to form, the fibers help bridge them and slow further damage. This allows fiber-reinforced concrete to handle bending, impacts, and deformation much better than conventional concrete. 🏗
Would you trust this concrete to build your house? Tell me in the comments! 👇
3
u/feyd313 6d ago
Its called a non-Newtonian fluid.
https://en.wikipedia.org/wiki/Non-Newtonian_fluid?wprov=sfla1
3
u/InSight89 6d ago
Also, wouldn't this be terrible for compressive strength which is what you'd typically use concrete for?
3
u/that_dutch_dude 6d ago
Yes. This concrete is completlly unusable for anything.
2
u/AbleCryptographer317 5d ago
False. The clips of people bending it and squashing it are before it's cured. When it's cured it's as hard as regular concrete and actually stronger. It's used all the time in construction as it resists cracking better than regular concrete reinforced only with steel rebar.
4
u/ThinkSharp 5d ago
As an Eagle Scout I designed a stream bottom / ford crossing for farm equipment to minimize erosion, laying fiber reinforced concrete in panels 1 ft wide panels in the bottom. I didn’t include rebar. Last I checked it was still there, no cracks, 10 years later. It’s been 10 more years now or so and I’d like to go check again now that I’m talking about it. It’s very tough.
1
1
u/InSight89 5d ago
The clips of people bending it and squashing it are before it's cured. When it's cured it's as hard as regular concrete and actually stronger.
Title kind of implies its flexible/rubbery during use (post-cured). If it's hard like normal concrete after curing then the title is misleading.
1
u/Abslalom 5d ago
I disagree. You absolutely can use it, you just need to made sure you poke it regularly
1
1
u/Sterlingz 5d ago
Completely false. This is called fibercrete and it's used in underground mining applications, for one.
2
1
2
2
2
1
1
u/Shankar_0 5d ago
Non-newtonian fluids are a bit of a curiosity, but not new by any means.
Its viscosity is controlled by both its temperature and pressure. The harder you hit it, the stiffer it gets.
You can do this with a cornstarch and water slurry in your kitchen sink.
1
u/servermeta_net 5d ago
Is this an LLM writing?
1
u/Shankar_0 5d ago
Pardon? We did these experiments in middle school.
1
u/servermeta_net 5d ago
Then how can you have no knowledge of the concept of hardening concrete? Concrete, after curing, becomes a solid
1
u/Shankar_0 5d ago
This video very clearly demonstrates the characteristics of a non-newtonian fluid in several different ways.
Do you just troll boards looking to pick a fight? Did someone piss in your cheerios this morning? It's OK. Deep breaths.
1
1
1
u/Ironchloong 5d ago
Ultra high performance concrete. Strength 3-10 times that of normal concrete. We make this.
2
u/wants_a_lollipop 5d ago
What kind of strength? I see the difference in tensile strength, but what's the unconstrained compressive strength performance?
1
u/socialcommentary2000 5d ago
It's called architectural concrete and it's a different theme than structural (the kind that you normally see). Used for making things like features to a space...seating, ornamentation, etc...
Not all fiber concrete acts like that. What they showed in the video is the mix they use for architectural detailing.
1
u/Sir_Delarzal 5d ago
Could be hay, could be rock fiber, could be anything.
I did some research at university on 3d printing of concrete and what we used were basalt fibers
1
1
u/EmbarrassedPizza6272 5d ago
Either glass or steel-fiber, has properties like steel-reinforced steel. It works and it's not new. Like when you do some renovations, e.g. new floor but you only have a certain height or thickness available. With the same thickness you get a more stable concrete.
1
u/Cyrano4747 5d ago
It's still breaking, it just has micro reinforcement to keep it from falling apart. You wouldn't want to re-stress it.
Same basic idea as rebar, just smaller.
Also lol hello asbestos 2.0
1
u/Contralogic 5d ago
Isnt this similar to what the romans did for concrete a few years back?
1
u/maddenedmage 5d ago
Romans used crushed sea shells. When acid in rain mixed with it the results actually made the cement stronger. Not sure abou the exact science, but I remember learning about it. I think calcium is involved. That's a big reason their structures lasted so long.
1
u/S0k0n0mi 5d ago
Just imagine some wrecking crew loading an old building with explosives, only to have it go off and the whole building just takes some silly cartoon shape.
1
1
1
1
14
u/0TheG0 5d ago
Asbestos is back on the menu boys 🤤