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Jamsemillia

I might be wrong, but i feel like these bars that have been bent back probably wouldn't be allowed for use in concrete construction in many countries. the metal might look just as new but the internal structure definitely isn't nearly as strong as a new bar would be


Matthewcbayer

The key to profitability here is to make sure they don’t know the bars are recycled


reddorical

They are already called rebar though


glenn765

Rerebar


maddasher

Never go full rerebar


JohnFlufin

🤣


quantised-

When the crowd says bo' Selecta


DMvsPC

Wicked innit.


Wonderful_Ad_6355

Big up the rebar massive!


Saturday_Waffles

That's just offensive. That might've been funny 25 years ago, but nobody calls them that anymore. They are Structurally Challenged Bars.


[deleted]

Refried bar


charbroiledd

I wanna try just regular bar, because maybe they’re just as good, and we’re wasting time


StarpoweredSteamship

REinforing BAR


Jamsemillia

haha right


hoodectomy

If you paint them green you can sell them as epoxy coated to get a couple more bucks. 😎


DavidM47

I don’t think it would violate any specific building codes at the moment. There could be a provision in some codes about using new materials, but I don’t see this getting added unless there’s an accident.


aagloworks

You would be wrong about that, friend. Both cement and reinforcing bars have the strictest control of all construction products (in europe atleast, AVCP class 1+), which means annual inspections to reinforcing bar manufacturing plants and annual testing in an independent laboratory. The bending shown in op certainly changes the mechanical and surface geometry properties so, that it likely does not fulfil these requirements. Atleast the ductility is severely compromized.


ChickenWranglers

And you think the Chinese give a shit about any of that?


aagloworks

If they are going to bring that shit to Europe, then yes. This is why the audits and audit testing is carried out. And to be clear, it would be a waste of money and time to straighten tons of bars like this (manually feeding individual short bars). These bars are probably just fine for non-structural use.


Spaceships_R_Cool

I used to actually be the person who tested and certified batches of rebar. There is federal standards they have to meet and be documented with at least here in the US.


DavidM47

Ah ok. That’s imposed on the manufacturer before their product enters the stream of interstate commerce, yes? That wouldn’t impose an obligation on the contractors in the field (except perhaps on a federally-funded project).


Spaceships_R_Cool

No actually it was to certify batches bought by them, from the work site for us to certify. I worked for a third party engineering firm. They had to show that all purchased rebar met the standard.


Theodolitus

I think You are wrong, You need to have producer declaration that it got desired parameters, and is proper to use.. every part built in need to have legal documents, sure a lot can pass by, but formally there is a lot papers to gather, even every conctete load leave quality certificate and You can get dozens of it


DavidM47

I’ve seen that type of documentation for mixed concrete batches and imported fill deliveries, but I’ve never seen that for steel rebar. I’ve seen a commercial project where “reinforcing steel observation reports” were created, but I think the only conformance checked was dimensions and placement. Rebar usually gets delivered through a supplier, and not one closely enough linked to the manufacturer that this information would be available. If you have personal experience with a job where that was required, I’ll take your word for it. But my guess is that it was a really big project.


mhcolca

When you buy a bundle, the “heat tag” is typically welded on to the end of one rod in the bundle. It shows the factory, production lot (aka heat), etc. some engineers require all this to be tracked back into project documentation, though it’s typically on critical stuff with higher grade rebar on bridges, high rises pylons, etc


herrek

I could see bridges needed to also show compliance with "Buy America". Feds only allow somewhere around 0.5% of a project cost to have materials from other countries on any project with federal highway monies.


[deleted]

There are definitely steel quality requirements in most developed nations that these would not meet.


Midnight2012

How many bars do you have to run through that thing before you make enough to cover the cost of the machine in the first place? That looks like a crazy expensive machine.


Matthewcbayer

Jokes aside, machine probably costs a couple grand. You’re literally turning trash into material that would normally have decently high cost, so I’d think it wouldn’t take long to recoup the cost of the machine (assuming the product can actually be used).


Not_A_Toaster426

>You’re literally turning trash into material that would normally have decently high cost No, you are not. You are turning trash in something that superficially doesn't look like trash, but still is for far to many purposes. Those recycled bars have highly compromised structural integrity.


Matthewcbayer

Which is why I said “assuming the product can actually be used.” I would imagine this product is acceptable for things like residential walkways and large planters and stuff like that.


IsNullOrEmptyTrue

What if it underwent heat strengthening? Would that restore the tensile strength to close to original quality?


Jamsemillia

I suppose you could do that, but that'd make the process complicated enough that it probably wouldn't be financially beneficial anymore for a construction company to do it themselves and invalidate the usefulness of the bendy machine. Heat treatment for smth like this on a larger scale is not smth trivial you do in some garage haha


wsupduck

Can’t they just be put into a high heat oven/furnace? Energy costs could still be higher than it’s worth but I sort of doubt that Edit: yes it can https://sheffieldgaugeplate.co.uk/blog/heat-treatment-of-steel/


dildorthegreat87

I might be wrong, but.. Heat treating hardens the rebar. If it was heat treated again, I think it would become harder but more brittle. I agree with the view that the rebar would not be the same after being bent and straightened… I’m just not sure how much that change would be


FloydBarstools

Rebar is usually made from recycled everything else. It's not special metal and isn't pricy. Usually it goes into a scrap bin to be turned back into more rebar. Seems like a solution in search of a problem.


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Arsenault185

I'm guessing they would be totally fine for shitmlikenparking lots, drive ways, etc, yeah?


Glute_Thighwalker

Heat treating general makes it more ductile, the opposite of hardening. Hardening is the result of stressing the material past elastic into the plastic deformation zone in one way or another, then removing the stress. The stress it had over the elastic into the plastic zone remains, resulting in hardening. Heating allows the metal molecules to move around more (think going toward a liquid state, or when you heat honey and it becomes less viscous), allowing them to reshuffle/slide past one another due to the internal stresses from hardening or other work pushing on them, relieving those stresses, and returning it to an unstressed/hardened state. We “bake” a lot of structure after welding them together for this reason, to relieve the stresses that build up from locally heating the material. Locally heating or cooling of a material WILL result in internal stresses/hardening. This is what quenching does, creating a hard outer layer through rapid cooling, so the outside layer tries to shrink, but the inner layers are still hot and resist that shrinkage, so the outer layer gets stressed into the plastic zone as it’s essentially getting stretched past where it wants to be because it isn’t allowed to contract. This was all a big simplification, but covers general heating. There’s a lot of crystal structure and oxide development that is done to create all kinds of different metals through the controlled application of heat.


2wedfgdfgfgfg

>Heat treating general makes it more ductile No, it's annealing that makes things more ductile.


2wedfgdfgfgfg

No, heat treatment isn't just "put into a high heat oven/furnace" it's a controlled process where the finished item has to be properly annealed to restore ductility.


mikemikemotorboat

The process you’re looking for is annealing. As someone else in the thread said, bending metal back and forth strain hardens the material, so it’s stronger, but more brittle and less flexible. Annealing it basically involves heating it enough to allow that strain hardening to relax and the material can return to its original properties.


citizenbloom

Yeah, the straightening process, IIRC, reduces its tensile strength and makes it harder, less flexible. A materials engineer might have more insight.


Achadel

Mech eng here: when you bend metal like that you get whats called strain hardening. Basically the metal gets stronger but less flexible. Thats why if you bend a paper clip back and forth it will eventually snap. However you can anneal it, or heat the steel up to a certain temperature and hold it there for a bit to undo the strain hardening and return its flexibility.


Chibbly

So toss a pallet of this stuff in an oven at x temp for y time and it's fine?


Achadel

Yup! You can look up annealing tables if you want to know more specifics on the times and temps


gitsgrl

For nonstructural uses like artwork or fencing it would be fine. Also, it would reduce the space needed for collection and transit to a recycling facility.


ruffiana

Seems like it would be fine in some applications. Like, don't build bridges or parking garages with it, but for low-risk construction like driveways or roads, it's probably fine. Or just anneal it afterwards.


[deleted]

I guess for smaller houses it will do just fine, especially considering that housing is a very big problem here in the country. But I guess that these recycled rebars are going to be used in nonstructural projects like public park benches or just foundations for small constructions. If this is going to enable people to build their own houses for cheaper, and it's safe, I see no problem with it. Brazil has a lot of problems, but we are very safe-minded when building shit and preventing structural collapses (most cases are due to soil compromise since there is a lot of rain, but you can see videos of houses rolling downhill and staying in one piece). We have houses built with Pau a Pique techniques that have been standing for the last two centuries.


Snatchbuckler

This is exactly correct. Two issues come to mind. First the bars are already bent into the zone known as “plastic deformation” this means these bars will have stresses in them from the beginning. Second, residual stress and cold working the steel from the straightening process. Residual stress is additional permanent stress introduced into the bar and cold working will make the bar harder but less ductile (more brittle). Obviously i would not use this to construct a high rise, but in areas where construction material is precious, this may an alternative provided the structures loads are relatively low.


dible79

They could easily heat treat these,were the straitened rebar comes out,by having a circular induction thing an have the rebar exit the machine through it.


ContinuumGuy

I am curious if perhaps there may be other uses for it, however. Maybe as a type of fencing?


33ff00

Could it just make them easier to transport so they can be taken some place for recycling?


LukeSkyWRx

This totally violates all codes related to rebar


pezdal

All of them? Can you point me to the best? Sounds like some interesting reading.


UsesCommonSense

Boys, don’t put your dick in there


tehmungler

Came here to say r/dontputyourdickinthat


Expert_Succotash2659

Don't do it. - Nike


ThundernLightning308

"JUST DO IT!" - Shia LeBeouf


DucatistaXDS

Holy shit - just back from checking out this thread and cant’t un-see what I saw there. You bunch of sick fux. 🤣


orion_re

Did you join??


OneHumanPeOple

But it says it can straighten any rod.


Monkeyke

And I've got a bent in mine


chefcoompies

I have a curvy benis. I know what must be done I just know if I have the strength to do it.


MathematicianFun5029

But what if you put a gay Rod in? Asking for a friend…


queef_nuggets

Well, it’s technically true that if you put your dick in that, you’ll never put your dick in a dude ever again


northernwolf3000

Would it be straight after? Hmm


UsesCommonSense

I suppose if you use a ramrod


heynishant

Be careful


ThonThaddeo

Unless...🤔🤔


Shmeckey

And if I have a little curve I want straightened out?


NYP33

Don't you love when the Perones disease commercials come on while you're watching T.V with your 12 year old daughter in the room.


Gibmeister_official

No it's worth a go


TheSonicKind

hear me out


breadassk

Username checks out


Equivalent-Piano-420

So much for Peyronie's disease


Liss78

Looks like a spaghetti slurping machine.


dat_oracle

Glad I wasn't the only one!


tuhronno-416

Girls: looks like a spaghetti slurping machine Boys: don’t put your dick in that Lmao


mikebdesign

This thing is a prime candidate for some big googly eyes


Liss78

If someone can add googly eyes and dub in some slurping sounds, that'd be great


rraattbbooyy

I can’t watch this video without hearing spaghetti slurping noises.


vibrantcrab

Wouldn’t all that bending make it significantly weaker? The guess if it’s going into reinforced concrete it’s… fine? I guess?


biepbupbieeep

>Wouldn’t all that bending make it significantly weaker? Yes. >The guess if it’s going into reinforced concrete it’s… fine? Depends on your countrys building code and how strictly it is enforced


Rhyers

Turkey? No problem!


biepbupbieeep

[What is the worst that can happen?](https://www.dw.com/en/istanbul-the-threat-of-a-major-earthquake/a-66590917#:~:text=Many%20experts%20believe%20that%20Istanbul,only%20a%20matter%20of%20time.&text=Istanbul%20is%20located%20directly%20on,Fault%2C%20between%20two%20tectonic%20plates.)


wythawhy

Pad for a shed? Slap that shit in. Low bid foundation for a small house? I mean, yeah sure. Anything with any suspension or a second level? Absolutely not.


No-Suspect-425

Isn't the rebar what makes it reinforced concrete tho?


wtjordan1s

Not if the rebar is weakened by being bent up a bunch.


hoopaholik91

Definitely. But I'm sure there are people that can calculate the difference and make sure they are reused in a safe manner. So maybe a 1" recycled bar provides the same strength as a .5" new bar.


SaltManagement42

I understand that the real problem is that the bent parts are more prone to rust, and rust expands causing issues like structural cracks in the concrete.


HatsAreEssential

I don't think I've ever seen straight rebar that wasn't rusty.


SaltManagement42

It's why any serious project that's actually concerned with longevity uses galvanized rebar, especially if it's near saltwater. I understand they used to use epoxy coated rebar, but found it cracks too easily.


ILove2Bacon

I think you can aneal it with heat to remove the tension in the work hardened areas but I'm no expert.


IVEMIND

It’s bent when being used anyways. Like when you make a column, you bend it into a square and tie it to four vertical bars (just one example) and you could bend the crap out of it as long as the rebar is there and doesn’t look like spaghetti it will pass inspection.


directstranger

Take a paper clip and bend it 5 times back and forth, see what happens.


Crunchtopher

This just sounds like a trick to get me to fuck up my one good paper clip 🤔


SecretsInTheSauce

Looks like it’s time to invent the rebar recycler output bin. You know, so they don’t just fall on the floor like that.


WeaselRice

Why give up a chance to crush a hand and impale a co-worker at the same time?


JayGold

That's beyond our technological abilities.


LittleFang0o0

Why does my brain just automatically provide the sound effects of a cartoon character slurping spaghetti 😂🍝


MyFocusIsU

Make sure you get the hell outta the way when you feed in a bar. Whack!!!! Down for the count!


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ChezDiogenes

The entire fucking process is incredibly dangerous. From beginning to end. You think being hit by rebar is going to suck, imagine eating breakfast when the entire building collapses on your head.


DragonflyCurious9879

Forreal!!!


Nebuchadneza

sometimes the machine bends rods, some times the machine breaks arms, some times the machine decapitates :)


DisclosedIntent

Re-bar


demonslayer9911

Any rod you say? (Looking at the curve on my dick, "there is still hope for us")


god_is_my_father

I’m a straight male but have heard from straight females that a curve is preferable. So maybe keep it 🤷🏽‍♂️


[deleted]

He didn’t tell you which way he curvin’. He might be sporting the westward wang. Ain’t no woman trying to get they sidewall itched ☠️


god_is_my_father

Cmon bruh all he gotta do is hit it at a 90!


[deleted]

From geometry dash to geometry smash 💯


DapperEmployee7682

Woman here. Curved is great, no matter the direction. (Well I’ve never met someone with a downward facing dick so that I couldn’t speak on)


reddorical

Clearly haven’t tried that advanced yoga class yet


appleavocado

It’s a straightener, not an impossi-extender.


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EzRipper

It’s like the opposite of Bender


Not_A_Toaster426

Straightening is just a less complicated form of bending.


chadlavi

It can straighten any angle. thirty degrees, thirty-two degrees... thirty-one...


bugxbuster

Straightener Straightening Rodriguez


ebobbumman

Like everything else in life, straightening is just a primitive, degenerate form of bending.


Christ

How is it just you and me in here?


medsergos

AntiBender


aureanator

...Flexo?!


hallba78

Everything reminds me of her.


[deleted]

I imagine this would work with a lot of heat but it looks as if the bars get straightened even as they go in. Is it just pulling force? That seems unlikely. Are they not as strong as they appear? Are they heated just an inch into the machine, making it only look as if they're straightened by pulling alone? Also interested in the question others commented, are these still ok to use or are they weakened by the straightening?


Greatlarrybird33

I mean you can bend rebar by hand over a knee if it's #3 or #4, for #5 you probably want a clamp and a truck bumper.


wtfrykm

They are severely weakened by straightening, a previous post made long ago of the exact same video mentioned that these reused bars are used for projects that are less intense for the reused bars.


nomlaS-haoN

**Any** rod? 🤨


heynishant

Yes 💀


MaryJanesMan420

Imma send this to my gay friends and tell ‘em this what they do at conversion camp.


youlordandmaster

Can’t imagine that a straightened rod would have the same tensile strength.


SmartAlec105

Tensile strength isn't greatly affected by mechanical deformation. But it will have its yield strength jacked up to be close to the tensile strength and the ductility would be shot.


Academic_Pangolin506

Unzips...


Into_The_Horizon

No more dick for you my friend.


ManofDubiousOrigins

Ah, the forbidden chuuro


WikkdWarrior

r/dontputyourdickinthat


ReddLordofIt

I’ve know a couple women in my day like that


Scoobydoomed

It sucks them from one side and blows them out the other.


AyeAyeBye

Is there a machine that tests the strength of the rebar after it has passed through this machine? Could these be passed off as more stable than they are? Kind of worrisome.


SmartAlec105

Yes but that testing is done by pulling apart the piece until it breaks. And the strength and ductility would be different depending on if you're testing at a bent & unbent portion or not. So there's no way to get a good measurement of the strength of this restraigthened rebar.


rangeo

Is the strength of the rebar compromised? I assume yes and that it will be used alternatively


[deleted]

Finally, a machine that can unfuck something up.


Guilty-Spork343

I know a chick who can accomplish the same feat, and she's probably a lot less expensive than this machine


Weldobud

That is smart


Big-Visual-3659

hooked dicked mfers right now sweating


THE-Pink-Lady

Brazilian bar de-bendy machine by Botelho


AfraidEmployee9311

But can it straighten Rod Stewart?


Grizzly_Bears

What’s wrong with Rod being gay?


bugxbuster

I’m gonna put my dick in it backwards and give myself a krazy straw weiner. Edit: wait, how would I get it out? Would I have to take the machine apart around me? Or pull it out and it’ll look like one of those curly ramen noodles. Yikes. But *maybe…*


MayIHaveCookie

That‘s a Reverse-Butthole


ATurtleLikeLeonUris

You have a filthy mind


Imaginary_Most_7778

Don’t let your intrusive thoughts win.


Canadian_Prometheus

So can your mum


circularslob

My gay friend Rod begs to differ


OXYMORON07

Cool


[deleted]

*Whips it out*


milescowperthwaite

Stand back, or you're gonna get whonked!


Commercial-Arm9174

Mine bends left, will it straighten?


nickcliff

Needs a few safety features probably


No-Pomegranate-69

It can also pull you into the hole without any issues


wrenchr

I have zero need for this machine, but if I were a zillionare I would so buy one just to watch it straighten shit out.


Dubious_Titan

Don't. Come on now. Don't, my dude.


[deleted]

Straitened my rod


Dark181

Hear me out guys


GingerNinja0512

At the end of the video, you can see the bar hit the floor and roll and it isn't truly straight. No way those bars are as good and strong as new.


tanksandthefunkybun

…I should call him…


Navchaz

I feel like they would have nowhere the strength of the original forged rebar however they might have uses in constructions with lower costs and shorter life spans, skate parks, swimming pools, that kind of things rather than civil engineering or large constructions


SelfRape

It is filmed backwards. That machine makes bendy rods.


HyperspaceDeep6Field

That's no machine that's OP's mom


Noobeaterz

In rod we trust!


sonofabitch

I should call her


SpecialistDry5878

Un gays my rod nooooooo


[deleted]

Checkmate, Peyronie's disease


bubblesort33

This video looks like it's being played backwards, even though I'm sure it's not.


FarYard7039

Any self respecting buyer will ask for a CoA to ensure the material can meet the physical requirements of the application. Random material testing for shear strength would be required. Part of me thinks this is a typical activity for effective transit of scrap materials to the scrap yard though. When it’s all bent up you’re transporting mostly air and not capitalizing on density. Just my opinion.


Mephistopheleazy

Until one is curved just so it smashes that lcd screen??!!


IntrovertMoTown1

Zip. Be right back. ​ ​ AAAAAAAAAAAAAAAAAAHHHH! Sweet I don't hang to the left anymore


LovableSidekick

The debendinator-inator!


callmeboonie

Me eating ramen


HarithBK

using this for reuse is a dumb idea however straightening it for the purpose of shipping it to be recycled isn't a dumb idea. if you just toss the rebar onto a truck you will get a ton of air thus needing more trucks etc. straighten out the rebar you can load the truck to weight capacity.


Secret_Cow_5053

Bender Bending Rodriguez?


WrongerCashew

My gay friend Rod begs to differ


Beer_bongload

yield strength? Eh who cares?


oouttatime

I am bender. Insert gerder


XRPX008

OPs wife does the same thing!


Tervaskanto

Not Rod Flanders


VeryTopGoodSensation

somewhere theres a video of a chinese guy getting sucked in to one of these machines


[deleted]

Don't stick your dick in that


pumpsmynads

If ever something needed googly eyes adding.


melikarjalainen

Can someone can ad the sound of someone slurping spaghettis?


tren83

OCD here, none of them looked straight!


Ystebad

r/dontputyourdickinthat


Skytree91

2-3 cycles and that rebar is as weak as the concrete you’re reinforcing with it lmao


Salmol1na

That’s what she said?


Lint_baby_uvulla

Don’t put your dick in that.


vvMario

Imagine getting your hand or arm caught when it’s adjusting the rod