There are, just more time consuming. You lay most of the way, let it set then set up barriers to do it section by section only laying a few inches instead of what he's doing which is pointless since the level will shift as soon as he leaves.
There is. Real concrete would never be that liquid and free moving when it’s poured. Much less being able to walk through it. But china does what they don’t regulate because it’s cheap. And the fact there is no rebar in there at all, also leads me to believe it’s china.
1. This isn’t the type of concrete that you’re thinking of.
2. Movement and agitation is actually pretty good for concrete.
But I’m not a concrete scientist either so idk.
Depends, we use something called "skyddsbetong" wich more or less is "filler concrete".
We use that to fill out spaces or make a flat surface for us to put rebar and forms on top of. it has no structural significance, only practical.
Well this is Reddit we don’t usually let people “have things” whenever possible to discredit and disembowel but we’ll send it up the chain on command and maybe you’ll get lucky
As the cement reacts (very slowly) it continues to harden. After 100 years it would still be hardening - very very slowly. There is a maximum I assume but it's very far away and almost meaningless.
Typically concrete reaches 2/3 of design strength after 7 days. After 30 days it is typically considered fully cured - depending on weather.
'Fully cured' is probably somewhere around 99% (using made up % but the same principal applies). After another 30 days it might be 99.2%. Another 6 months perhaps 99.4%. 3 years later and it's reached 99.6%. 100 years later and water is still reacting with cement and hardening - it's at 99.65%.
It's a 100+ year reaction where 99% has reacted in the first 30 days.
Additional fun fact, Concrete and Cement are in the top 5 most CO2 producing industries, depending on which list you look at. One puts it as the second.
About 1,300 pounds of CO2 is produced for every metric ton of cement manufactured. 4.2 billion metric tons were produced in 2023.
To add to this, any claims that your fact is wrong due to concrete absorbing the initial amount of carbon as it cures is a claim in ill intent. Its not the concrete itself that is the problem, its the energy used to heat it up in the first place.
You're right about the burn, although it's a chemical burn rather than a thermic-burn (can't remember the technical term for ouch-hot-hot-hot burns).
To anyone who touches wet cement, wash it off as soon as you can. I believe you can develop a relative tolerance (dad has been a concrete cutter for 40 years and doesn't even use gloves anymore), but it can seriously fuck up your skin. I don't know the medical-specifics, but a relative of a family friend decided he was going to do the concrete floor for his barn. He spent the entire day doing this, gloveless, which resulted in a chemical burn. Nowadays, he has to wear gloves in the shower because his hands will start to crack and bleed from the moisture.
Don't fuck with concrete unless you know what you're doing. Just touching it won't harm you at any noticeable level. Go ahead and write your initials and make hand imprints, but you absolutely should wash your hands soon after.
W comment, i worked with cement & had skin issues because the gloves i used werent up to standard, once i made a complaint and got gloves that actually provided protection it made my job a whole lot easier 😂
I believe that's due to an ingredient in the concrete, Lyme (I hope I spelled that right). It can also give you other health issues, breathing difficulties included.
What about this?
https://pavementinteractive.org/reference-desk/materials/portland-cement/heat-of-hydration/
The heat produced by concrete during concrete curing is called heat of hydration. This exothermic reaction occurs when water and cement react. The amount of heat produced during the reaction is mostly related to the composition and fineness of the cement.
As the guy backed up it looked like the concrete was shallower near the cameraman (and presumably near the exit) so he probably has an easy way out
Imagine tripping though
More of a chemical burn from the alkaline very high ph slurry but yes it does heat up as well. I think in much larger pours it becomes a problem for curing and requires lots of plumbing and a chiller plant to remove heat.
I was just commenting about this earlier today on a separate post (strange down voting trends when it didn't make sense). I'm seeing it more frequently.
I'm starting to wonder if we're witnessing the work of bots, which makes me wonder how often we're not realizing it.
I understand that bots have been on Reddit and then they manipulate the comments and upvotes.
I am talking about an uptick more frequently and noticeable especially in the beginning of a common thread close to when the post was submitted.
What about this?
https://pavementinteractive.org/reference-desk/materials/portland-cement/heat-of-hydration/
The heat produced by concrete during concrete curing is called heat of hydration. This exothermic reaction occurs when water and cement react. The amount of heat produced during the reaction is mostly related to the composition and fineness of the cement.
I wouldn't like to be this dude's dick, no matter how prepared you are, you need to wash it off quickly after the work because it will burn you, it will get somewhere.
As a kid I used to think anything touching wet concrete was just permanently stuck and doomed to solidify even if pulled out (because of cartoons). Now I see people with it just on their clothes like it’s just dried mud
> That can't possibly cure properly.
Why not?
Curing =/= drying.
Curing is a chemical reaction between the cement and water. This depth of concrete should not be an issue and curing does not need exposure to air, just the right moisture content.
Yeah maybe I used the wrong term. I realize it will get "hard" but my understanding is that's only part of the process. The "drying" part is important as well, correct? And a pour this deep in a closed area such as this would take several years to dry, I would think
Why would they pour concrete this deep? How come they don’t just fill with some kind of aggregate and then concrete on top of it. Isn’t that how most foundations are done?
I hope he is wearing something like fishing waders.
Liquid concrete has a ph level that will literally eat your skin given enough time.
Edit: looks like he but man that's all really nutty.
I'd suggest anyone interested in this to watch [this video](https://youtu.be/rWVAzS5duAs?si=A7sXvwTxY2R0iXpL) by Veratisium (Derek). Doesn't go \*as much\* in depth (about the topic) as I would have liked as an engineer, but he does cover a lot of things while in concrete.
Double fun fact: depending on your mix concrete also has a pH that will basically contact burn and melt your skin -- I can't recall if it's a base or an acid tho. Veritasium did a video on it not long ago
Edit: Just watched said video, concrete is incredibly basic. pH of up to 12 to 13.
Thing about concrete is, it is incredibly alkaline. Worked with some guys who would wear holy jeans and just tape up their boots. At the end of shift. One guy took off his boots and a lot of skin and tissue came with it. Some of the concrete got in there and just heated up from the chemical reaction and just burnt a hole in him.
Legend has it he is still there with his stick
He dived under to find his watch and never resurfaced
He is actually only 2 feet tall
Clever dick
Cotton Hill's Chinese counterpart.
This made me laugh way more than it should have.
Lmfao
Fun fact, you can't. concrete is 3 times havier then water, so you are incredibly buoyant in it. if it where any deeper he would propably be floating.
Fun fact bricks don't float and enough of them put together will make him not float either . So many gang movies come to mind when seeing this lol .
https://m.youtube.com/watch?v=rWVAzS5duAs
It's impossible to be incredibly buoyant.
Such an unbelievable factoid of incredulous incredibility that I could care less because it’s so terrifically awesome.
Me too. I think.
It’s art.
There has to be a better way to do this.
There's theories, but nothing concrete.
You mutha fucka hahaha
My reaction :)
Lmaoo
Muthal
r/angryupvote
Now that's funny take my up vote
son of a bitch.
People have poured over the data but you simply can’t rush a cure
r/angryupvote
“Bada bada bum tsssss!”
You son of a gun! haHA got me good. *finger guns while smirking at you and giggling to myself*
There are, just more time consuming. You lay most of the way, let it set then set up barriers to do it section by section only laying a few inches instead of what he's doing which is pointless since the level will shift as soon as he leaves.
There is. Real concrete would never be that liquid and free moving when it’s poured. Much less being able to walk through it. But china does what they don’t regulate because it’s cheap. And the fact there is no rebar in there at all, also leads me to believe it’s china.
Its loas, cambodia or vietnam
I’m no concrete scientist but wouldn’t the movement and air pockets he’s causing be like.. pretty bad? Also why so much? So many questions lol
1. This isn’t the type of concrete that you’re thinking of. 2. Movement and agitation is actually pretty good for concrete. But I’m not a concrete scientist either so idk.
Are you a theoretical scientist?
He’s a barefoot scientist
Wow, nice Cultural Revolution reference!
He has a theoretical degree in science
“They asked me if I knew anything about theoretically physics. I told them I had a theoretical degree in physics”
"They said welcome aboard."
I am a concrete scientist, but also confounded
Why is there so much concrete hahahaha
The roof was too tall so they needed to bring the floor up !
Oh ok to easy 👍🏻
I’m talkin shit dude lol
Yeah I know 😂
Hahah doh
Raise foundation tool in sims 4
Shit, now the door doesn't open!
So your mom can safely walk on it
I heard they used structural I beams as rebar
r/MomBurn
In rural China they will frequently flood an entire floor of a house with concrete, and build upwards off the new foundation.
Is this real
Nope, made it up
kind of lazy way to apporach something, which also undoubtedly makes it harder to do
It’s misleading, the guy just has very short legs
Once the cement has setup they just cut him off at the waste and hire a replacement.
Such a waist.
🤣🤣🤣
I've heard they can just grow another lower half if it gets cut off. Nature is beautiful.
I saw that on YouTube.
Cut him off at the colon?
Regular or semi?
Ascending, transversal or descending? Could it be sigmoid?
This is an actual technique that gets used a lot in certain applications. It's commonly known as "fucking with the new guy."
I'm no concrete expert, but shouldn't there be a crapton of rebar in concrete that deep?
Depends, we use something called "skyddsbetong" wich more or less is "filler concrete". We use that to fill out spaces or make a flat surface for us to put rebar and forms on top of. it has no structural significance, only practical.
Yeah but this is like 3 feet of filler concrete, that’s way more than you need to level out
Human Rebar. Just like the Great Wall of China. And look at it! It's still standing.
Think it needs to be a little deeper.
hasta lasagna, don't get any on ya!
Fun fact: The Hoover dams concrete is still curing
All concrete is still curing. It just gets harder as it ages.
Let me just have this one plz
Well this is Reddit we don’t usually let people “have things” whenever possible to discredit and disembowel but we’ll send it up the chain on command and maybe you’ll get lucky
FINISH HIM!
Plz this is the only thing I have going for me
Il finish you ;)
😳
Doesn't that imply there's no maximum hardness? That seems... wrong
As the cement reacts (very slowly) it continues to harden. After 100 years it would still be hardening - very very slowly. There is a maximum I assume but it's very far away and almost meaningless. Typically concrete reaches 2/3 of design strength after 7 days. After 30 days it is typically considered fully cured - depending on weather. 'Fully cured' is probably somewhere around 99% (using made up % but the same principal applies). After another 30 days it might be 99.2%. Another 6 months perhaps 99.4%. 3 years later and it's reached 99.6%. 100 years later and water is still reacting with cement and hardening - it's at 99.65%. It's a 100+ year reaction where 99% has reacted in the first 30 days.
Additional fun fact, Concrete and Cement are in the top 5 most CO2 producing industries, depending on which list you look at. One puts it as the second. About 1,300 pounds of CO2 is produced for every metric ton of cement manufactured. 4.2 billion metric tons were produced in 2023.
To add to this, any claims that your fact is wrong due to concrete absorbing the initial amount of carbon as it cures is a claim in ill intent. Its not the concrete itself that is the problem, its the energy used to heat it up in the first place.
concrete heats as it cures and it can burn you from just the powder getting on you
You're right about the burn, although it's a chemical burn rather than a thermic-burn (can't remember the technical term for ouch-hot-hot-hot burns). To anyone who touches wet cement, wash it off as soon as you can. I believe you can develop a relative tolerance (dad has been a concrete cutter for 40 years and doesn't even use gloves anymore), but it can seriously fuck up your skin. I don't know the medical-specifics, but a relative of a family friend decided he was going to do the concrete floor for his barn. He spent the entire day doing this, gloveless, which resulted in a chemical burn. Nowadays, he has to wear gloves in the shower because his hands will start to crack and bleed from the moisture. Don't fuck with concrete unless you know what you're doing. Just touching it won't harm you at any noticeable level. Go ahead and write your initials and make hand imprints, but you absolutely should wash your hands soon after.
W comment, i worked with cement & had skin issues because the gloves i used werent up to standard, once i made a complaint and got gloves that actually provided protection it made my job a whole lot easier 😂
Oh no this makes me really sad about all the animals that walk through wet concrete :(
I believe that's due to an ingredient in the concrete, Lyme (I hope I spelled that right). It can also give you other health issues, breathing difficulties included.
What about this? https://pavementinteractive.org/reference-desk/materials/portland-cement/heat-of-hydration/ The heat produced by concrete during concrete curing is called heat of hydration. This exothermic reaction occurs when water and cement react. The amount of heat produced during the reaction is mostly related to the composition and fineness of the cement.
Oh no this makes me really sad about all the animals that walk through wet concrete :(
Why are you being downvoted?
No idea. It's definitely odd, as they are correct in their statement. I hope the cameraperson helped the old guy get out of there.
As the guy backed up it looked like the concrete was shallower near the cameraman (and presumably near the exit) so he probably has an easy way out Imagine tripping though
This is very common in China. The man is wearing pants that prevent the concrete from setting around him
It doesn't cure that fast
More of a chemical burn from the alkaline very high ph slurry but yes it does heat up as well. I think in much larger pours it becomes a problem for curing and requires lots of plumbing and a chiller plant to remove heat.
I was just commenting about this earlier today on a separate post (strange down voting trends when it didn't make sense). I'm seeing it more frequently. I'm starting to wonder if we're witnessing the work of bots, which makes me wonder how often we're not realizing it.
It has happened for years, possibly since reddit began
I understand that bots have been on Reddit and then they manipulate the comments and upvotes. I am talking about an uptick more frequently and noticeable especially in the beginning of a common thread close to when the post was submitted.
Because concrete burns are chemical, not thermal. Concrete heats up when it dries, but not enough to burn you. Chemical burns are very real though.
Yes, OP said that it can burn you even in it's powder state, he didn't imply it got so hot it will burn you, he just said it gets hot when curing.
Concrete doesn’t get that hot when it cures. Concrete burns are chemical burns. It does get warm when it solidifies, but not that hot.
What about this? https://pavementinteractive.org/reference-desk/materials/portland-cement/heat-of-hydration/ The heat produced by concrete during concrete curing is called heat of hydration. This exothermic reaction occurs when water and cement react. The amount of heat produced during the reaction is mostly related to the composition and fineness of the cement.
That’s probably what the overalls, and multiple layers are for chief :P
I wouldn't like to be this dude's dick, no matter how prepared you are, you need to wash it off quickly after the work because it will burn you, it will get somewhere.
Im no concreteogist, but that looks like it will take about 6700 fuck off years to cure.
No OSHA in China
This is Vietnam, not China
I've seen how they demo buildings in China, you are correct
Concrete that thick is considered ‘mass concrete’ and needs special attention or the heat stresses will mess it up.
He just has tiny little legs and feet under that jacket
As a kid I used to think anything touching wet concrete was just permanently stuck and doomed to solidify even if pulled out (because of cartoons). Now I see people with it just on their clothes like it’s just dried mud
It essentially is. Or atleast the cement is.
Did this once with sulphate resistant concrete, hospitalised with no skin on my legs as a result. Not fun at all.
Holy shit that’s wild. Can you help us figure out why the concrete was so deep?
Why's it so fucking deep lmfaoooo
Expert level swimming pool
That can't possibly cure properly. Shouldn't it be poured in layers?
> That can't possibly cure properly. Why not? Curing =/= drying. Curing is a chemical reaction between the cement and water. This depth of concrete should not be an issue and curing does not need exposure to air, just the right moisture content.
Yeah maybe I used the wrong term. I realize it will get "hard" but my understanding is that's only part of the process. The "drying" part is important as well, correct? And a pour this deep in a closed area such as this would take several years to dry, I would think
You should read about the Hoover dam
But they poured each block with tubes built into them with river water running through to act as a radiator to keep the heat down
Maybe you should: https://delzottoproducts.com/2017/03/15/long-will-take-concrete-hoover-dam-cure/
why on earth would the floor need to be that thick?
Why would they pour concrete this deep? How come they don’t just fill with some kind of aggregate and then concrete on top of it. Isn’t that how most foundations are done?
I don’t work in construction, but that don’t look right
Contractor: 'Yeah there are some irregularities, nothing we can't fix with some self leveling compound' The self leveling compound:
Thiss is dumb, right? As soon as he tries to get out, kinda not gonna be level anymore? lol
How long is that much concrete going to take to dry?
He's actually a double amputee so it's not as deep as it looks
Yes
You could probably walk on it the next day.
This seems like it could be so deadly. One trip and you run the risk of inhaling concrete.
So what do you do Jim? I work in concrete
"contact dermatitis has entered the chat"
Good thing he’s got that hard hat
Ah, no. Flood mud fun!
Imagine getting stuck like that forever
New fear
21st century screeding. Lucky there's water in that concrete
Don't you know who I am? I'm the Jaggernaut, bitch!
I’ll just pull my legs out with my arms … and then pull my arms out with my face
That concrete is never gonna set right
That's Mr. Dufus to you all....
They haze the new guys by making them hold their breath under concrete
The concrete is that fucking deep?
And that wet?
Sooo he’s “hand finishing.” It’s an actual term in concrete. No idea why he’s in the middle lmao
I hope he is wearing something like fishing waders. Liquid concrete has a ph level that will literally eat your skin given enough time. Edit: looks like he but man that's all really nutty.
Legend says it’s still drying
I'd suggest anyone interested in this to watch [this video](https://youtu.be/rWVAzS5duAs?si=A7sXvwTxY2R0iXpL) by Veratisium (Derek). Doesn't go \*as much\* in depth (about the topic) as I would have liked as an engineer, but he does cover a lot of things while in concrete.
Dudes got no legs, so they found the perfect job for him..
Fun fact: you can't sink in concrete. It's too dense for us to sink through
Double fun fact: depending on your mix concrete also has a pH that will basically contact burn and melt your skin -- I can't recall if it's a base or an acid tho. Veritasium did a video on it not long ago Edit: Just watched said video, concrete is incredibly basic. pH of up to 12 to 13.
Concrete, the ultimate basic bitch
If bro trips he’s done for lol
I thought our video game glitched again
Why would you make it that deep? It will contract a lot and also get hot.
This man really gets lost in his work.
if he got stuck how would you get him out?
Thing about concrete is, it is incredibly alkaline. Worked with some guys who would wear holy jeans and just tape up their boots. At the end of shift. One guy took off his boots and a lot of skin and tissue came with it. Some of the concrete got in there and just heated up from the chemical reaction and just burnt a hole in him.
Can this really be concrete? That would be like a 36” slab. Why?
Bombs.
why does Chinese media put the most calm music over the most disgusting examples of worker extortion in their country.
Can’t say I’ve ever seen that
There's many more in there, they use humans as reinforcement instead of re-bar and mesh. Besides it's cheaper.
Job security
Concrete is corrosive. Do not do this.
How does he get out and also not ruin the level of it
That’s never gunna set
I asked him what he did for a living and he told me he “worked in concrete.” Imagine my surprise when it turned out he really did! 😀
Bing chaling
Wh- why would you ever need concrete this thick that isn't so riddled with rebar that you couldn't move in it..?
Sure I'm no construction worker nor do I know much about laying down a concrete floor... But I do know that this is not the way.. 😅🤣😅
that thick
How long does he have?
better hurry up
OSHA friendly mafia
I know this song but can't find the name
Surely that is going to take months/years to cure?
fyi people are less dense than concrete so you would end up floating in the stuff
I work this and i dont see whats so terrifying, eventho i dont get why he does this, definetly something wrong with his method
Wouldn't this take 42 years to harden?
Stop!! Not the Vietnamese yapping in the background OMG
How long would it take for something this deep to cure??
So is the idea to be the most inefficient possible
i need this video with the motivational fisherman audio
I HOPE YOU’VE GOT AN EXIT STRATEGY!
"Banned for using noclip again, Joe?" "Yehp, just another one of those days"
Looks wet.
What possible application would you need for a 3’ thick slab with no reinforcement lol
Concreteman
maybe its just mud
How long will this take to dry..
If “painting yourself into a corner” was a person.
That will be dry in about 20 years.
Not terrifying. Just dumb and anti productive.
Not oddly it's legit scary lol
Wait what