If oxygen was removed from all molecules, you would have much bigger problems than concrete crumbling. The human body is 65% oxygen by mass. All life would die, including the microscopic kind, as DNA itself contains oxygen.
I worked with concrete years ago. During that time I learned or was told several things not mentioned in your video. 1- A normal pour (like homeowner sidewalk) would harden enough to walk over it in a day or two. Bad idea. It isn't set enough. A full set time would normally be over 3 weeks. But long before that it would survive normal wear and tear (walking or bicycling on it). A day or two is too soon. 2- Stronger mixes (more cement) cure faster and get hotter. And the strength may be needed for a "structural" application. 3- A standard guide would be to cover fresh concrete for a day or so. Why? Because some of the water trapped inside couldn't evaporate if the outer surface has hardened and dried. And you would prefer the concrete to "set" from the inside out. 4- Water is trapped inside curing concrete and it takes time to dry. Harry Homeowner makes a BBQ pit and uses it too soon. Then it blows up as the trapped water turns to steam inside the mortar. 5- Concrete is formulated for various applications, often by adding chemicals before mixing. Some make it set faster, as you would want in cold weather. You want it setting before the water in it can freeze. Or you add a chemical that entrains air within the concrete. "Air-entrained concrete contains billions of microscopic air cells per cubic foot. These air pockets relieve internal pressure on the concrete by providing tiny chambers for water to expand into when it freezes." Minor comment that is normal for all of us. We frequently swap "cement" and "concrete." as you did in the video.
@@vksasdgaming9472 I think it is both. The chemical reaction creates a lot of heat. Especially if there is a higher percentage of cement. Or possibly some additives put in to accelerate the setting. I guess the water is part of that, and does seem to get released during the process. Having the surface moist may allow a path for the internal water.
4 года назад+9
@@vksasdgaming9472 Both: the reaction with oxygen and/or water and/or CO2 is what makes It harden, but water needs to be removed slowly, so the cement slurry or concrete has the desired porosity, texture and elasticity. Kinda similar to how important is removing water gradually when baking bread or cakes. P.S.: There is the exception of using hydrophillic cement, since It is designed to harden when damp and inside/besides water. In that case, only the reaction with water matters.
A standard 50/50 3500psi exterior has chemicals in it to help it set quicker...standard set time is 28 days and can be accelerated with the aid of chemicals
Concrete also typically has gravel mixed in too. Concrete after it hardens [it doesn't just "dry"] it is basically a rock. Rock don't require oxygen to maintain their cohesive density. If you put wet concrete in a vacuum it will dry/harden just fine. The quality of the concrete might be reduced because of the accelerated moisture removal via the vacuum.
water added to concrete makes crystals in the concrete expand and enter lock. and there is an air content when mixing it on industrial scale, but it needs to be balanced in order to prevent bubble texture.
rock may not need oxygen to survive but some rocks require moisture or they will break and crumble. some actually crumble and rot after being exposed to oxygen. concrete is almost as hard as rock as its made up of rock mostly but its not uniform so it will always have disadvantages.
Because the process is a chemical reaction, it's not drying or hardening. The correct term would be setting or curing. Specifically, concrete is said to be set once it is stiff enough not to deform under pressure, such as someone walking on it. Concrete is said to be cured once it reaches full design strength. Generally speaking, drying would imply that water leaving the mixture causes the change, and hardening would imply a physical process (such as work hardening) is causing the change.
I feel like "if all oxygen disappeared concrete would crumble" is based on some ridiculous, hypothetical case of "aliens literally took every oxygen atom off the planet", at which point crumbling concrete would be the least of our concerns.
for electric string it’s removing the air within the chamber, but it would have 0 effect on the concrete since the oxygen molecules are bonded to other molecules within the concrete. What people mean when they say it would turn to dust is that, if ALL oxygen disappeared, including the molecules bonded to the concrete, the concrete would lose all structure and turn to dust.
"So, you use cement to make concrete." THANK YOU!!! Thank you for explaining that! I test concrete for a living and it bugs the snot out of me when people say "cement" when they mean "concrete". It's like saying I'm going to bake a flour. Or, have a piece of flour.
As a masonry contractor, I'm quite familiar with the properties of concrete. Concrete will even set up even under water. The reason the concrete set up slightly slower in the vacuum isn't because of lack of air but rather lack of air movement. Mortar on a corner of a building will set up faster than the rest of the wall because it experiences more air movement like wind reducing the moisture content. While this does make it set up slightly faster it does not strengthen the concrete in the long run. In fact wetting the concrete and keeping it wet during the first 7 days of the concrete cure will increase the cure time slightly but can greatly increase the strength of the concrete when fully cured, as well as more evenly cure preventing cracks.
Water boils and turns to vapor as the pressure goes down. So I would expect it to harden faster as the water is forcibly sucked out of the concrete. But I guess at some point right below the surface, the weight (and thus pressure) of the concrete is higher than 1 atmosphere, so the water remains a liquid internally.
@@cyleleghorn246 Yeah, perhaps on the surface as you said. But in the industry we call concrete "green" when it's still in it's initial cure period and at this point it is susceptible to easy damage and is the color green. This is why when concrete is "green" you do not want people walking on it. When you watch the video, the concrete in the vacuum actually cured a little slower and was greener and crumbled more. If there's high winds when you're working with concrete or mortar it set's up crazy fast because the air is pulling the moisture out of the concrete, this wouldn't happen in a vacuum.
@@Ryan-ff2db thank you for explaining it more. It does make sense that as concrete cures with an exothermic reaction (releases heat) that wind will speed up the process by giving it wind chill. And in a vacuum, since there is no wind or even air to conduct the heat away from the concrete, this would become a blackbody radiation problem, which is the slowest way to get rid of heat. Same reason it's so easy for space ships to overheat in space due to human warmth and electronics, even though at all the same settings they'd be running very cold anywhere on earth surrounded by air or touching the ground. There's just nowhere for the heat to go, nothing for it to travel into to escape the ship, or in the case of this video, to escape the concrete and allow the reaction to continue
I would be curious to know how actual wet concrete would react in a vacuum, and not just a wet cement mix. That wasn't wet concrete that he put in there, it was just wet cement. Would the sand have an effect on the way it cured?
@@petrolhead0387 He used concrete. Cement is a fine Portland powder that forms a slimy paste if mixed with water by itself. Concrete is Portland mixed with gravel and sand, which is what you see in the video.
She: Honey, what are you watching? Me: What happens to concrete in a vacuum. She: Alright, what does happen to concrete in a vacuum? Me: Well, nothing. ...
@@idiot5637 The most I would expect is that Concrete would be weakened in a vacuum somehow. But the idea that it would turn to dust is pretty extreme...
@@idiot5637 yea, it would be a pretty limiting structural material if it required atmospheric oxygen to retain its strength. And given that its used in basically EVERYTHING, it wouldnt make sense to have such a major restriction like that.
@@idiot5637 I believe at least some of those videos are more along the premise “what if all oxygen atoms suddenly disappeared one day” to include oxygen atoms bound in compounds. Under that premise they are probably correct; concrete is a mixture of various oxides and removing the oxygen from those compounds by whatever mystical means would be catastrophic. Just not very likely. The thing about concrete in vacuums is, on that basis, a misunderstanding of the premise of the videos. Not that they aren’t still clickbaity trash.
@@randombloke82 that's what i was thinking. Oxygen is not air. If oxygen really disappeared, oxygen compounds such as water (and sugar!) would also dissappear. and i think we all know water doesn't just cease to exist when put in a vacuum...
The experiment isn't actually without "oxygen". Concrete does have oxygen molecules inside of it's structures. When you put concrete in a vacume it doesn't break up because only the oxygen in the air is sucked out, but not from the concrete.
@@incognito7705 It isn't. The are Oxygen molecules present IN concrete, which got there by a chemical reaction. And you can only suck out the Oxygen from the atmosphere, not from the compound which makes up concrete.
@@incognito7705 Oxygen is present as a binder agent in concrete. It forms cement into a cohesive mass. There are pores in the concrete, yes, but so is in our bodies. When he put his hand in the vaccum, going by the same logic, it should have sucked stuff from his body. But it didn't. Same happens here. The only way concrete will turn to dust if Oxygen as an element disappeared in concrete.
I may be mistaken, but concrete is a product of hydration, where the water allows the cement particles to come together around a molecule of water. Considering that there is hydraulic cement, which doesn't need oxygen to make. The hydrating water is essentially locked in a crystal cage. The only thing that a vacuum might do is lower the vapor pressure which allows the water to escape the cement. Probably not enough to free the bound water, but it might require less energy when you apply heat to it. If you apply enough heat, the water breaks out of the concrete, and you're back to the initial ingredients. Limestone is an example of a rock which needs water to be in rock form. If you heat it, it turns into burnt lime (Calcium Oxide). I think there are some products which might be weak enough where a vacuum might liberate the water molecules.. maybe gypsum or epsom salts. Vacuum distillation and vacuum drying is a think (freeze drying is forcing the water to crystallize and sublime out). Interesting question, but boring answer ;)
@@alphaalpha3557 there is oxygen in space. Oxygen molecules that are a part of larger compounds. I'm not referring to pure oxygen as a gas.I'm talking about just the molecule W 8 protons. If every one of those were to instantaneously dissappear in just about anything it would fall apart
For example if you were to remove all the oxygen molecules from water (h2o) it would just turn into h2 which is hydrogen gas, and also dust from whatever else is in your water like minerals and impurities and whatnot.
@@Gangstabean420 I think you confused him at ( there is oxygen in space ) but you completely lost him at ( larger compounds ) he was gone by ( protons ).
A few points here: - For concrete to turn to dust, you'd need to pull it to it's tensile breaking point. Which is roughly 3Mpa (mega pascal) for homemade concrete. - Mpa is a measurement of force of impact on a certain area. It's important how big the area of measurement is. Let's say the area is 1cm square. In this case a vacuum or anything else would need to pull with 30kg of force on every single square cm of that concrete piece to reduce it to dust. Quite a lot of force on such a small area. Another way to look at it is if for example you attach a 3x3 inches metal plate with glue to concrete. You'd need around 170kg (375 pounds) of pulling force on that steel plate to pull concrete apart. If the glue is strong enough that is. - Concrete takes a whole month to fully cure, but it reaches 60% of it's strength in a day. I'm a construction engineer by trade, so I know a lot about concrete. - An additional point to all curious about why concrete falls apart, it is because of carbon dioxide (CO2) it bonds with hidroxides in cured concrete, reduces it's ph value, and returns it to it's more natural form - limestone components so it crumbles away. So essentially in space concrete is everlasting, there is no co2 to chemically destabilize it. While in Earth's atmosphere it's destined to fail the moment it's made.
Is it "destined" to fail literally, as in if the mixtures is poured/cured in atmosphere, it's already been exposed to factors that inevitably lead to failure? Or is it the sustained presence of atmospheric variables that _eventually_ lead to failure? I'm wondering if it's possible to replicate concrete in vacuum, and if possible, if it would have a positive impact on the materials durability/properties.
@@Nikolai18A You can pour concrete in vacuum, it's an anaerobic chemical reaction, it needs no air to cure. Its also common practice and desirable to cure test samples of concrete underwater for 28 days so the tests have as little as possible sample deviation. The carbonatization process is constant, the concrete absorbs CO2 from atmosphere for years and decades, and very slowly but surely loses it's properties. It's also not that it loses its integrity altogether, it loses some, it's rather that it gets much higher acidity and rebar inside corrodes and then breaks apart, then what was standard pressure can break the same construction easily. That's why you see rebar exposed and corroded and breakaway concrete on old buildings. So yeah as long as we live, CO2 is present in the atmosphere and standard Portland Cement made concrete from limestone is inevitably gonna fail.
"what would happen if we removed one of the main building blocks for literally everything" is perhaps the least exciting thought experiment I've ever heard.
@@TheKitMurkit lmao what? The moon has different theories of how it was made. It might not be concrete. Might even be a dried up ball of magma. So a spherical Igneous rock. That's why it's so white is one theory that I personly believe in. So we can't say that it doesnt crumble because of that 1 theory that might be wrong.
@Jeffiam Man well he probably didn't know before he clicked the vid and only after watching came to that realization. You can't just assume he is a subscriber. Personally I don't think he's stupid either. Just misinformed.
If your talking about the oxygen gas than no it won't crumble but if your talking about literally every oxygen molecule than the concrete will crumble and that's what he told us about in this video
As a builder I offer the following clarification on the terminology for those who are interested: Concrete is a combination of cement, fine aggregate (sand) and course aggregate (sharp rocks). Sand & Cement mixed together without the course aggregate is called Sand & Cement which is also called Mortar (for bonding bricks) or Grout (used between your tiles). Sand & Cement mixed with Clay is called Render. Originally though, Mortar was made from only Sand and Lime as Cement was too expensive for most applications. The advantage of this mix being that Sand & Lime can be recycled if it is ground down and remixed with water to make wet Mortar again. With all of these cement based products, additional additives can also be added to improve plasticity, accelerate drying times, delay drying times or even to make the product less permeable to water, depending on the desired application. The faster you cure concrete the more it cracks. And cement based products shrink as they cure, so products like “non-shrink grout” overcome this because they have an additive that expands the product slightly as it cures while the cement shrinks at the same time, therefore the net effect is “non-shrink”.
I didn't hear any facts, all I heard was stupid fucking annoying background music so I shut off the goddamn video. I am fucking sick of music videos instead of information videos. I didn't come here to listen to fucking music I came here to listen to somebody talk. So fucking annoying but everybody just accepts it like complacent little fucking sheep.
This guy can make "watching concrete to dry" something interesting. Coming up: "What happens if you try to dry paint in the vacuum" that's my irrational request now xD
Agreed. Idk where people get these ideas that suddenly everything will end... lol and if anything he took it to extremes. He didn't just remove oxygen, he removed nitrogen, hydrogen and many other gasses etc
This was actually really interesting. I expected a different outcome with the concrete setting in a vacuum. That was a cool experiment. Got a good lesson in concrete aswell
Who else was like "that's such a stupid thing to try that I won't waste my time with this video" and then thought "what if it actually turns to dust and I'm about to miss on the most interesting video of the year" and clicked on it?
Yeah to be honest I did as well, even though I learned how concrete works in engineering class😔, it's sad to say I got too tempted. I also thought it was sad how people thought that the oxygen just sat inside the concrete as if they acted like pillars preventing it from crumbling under constant weight.
I think one reason of this myth is because when cement/concrete as cured and is total dry. If the concrete is used to hold Weight (Bridge/Building) It would have already a stress to stay in one piece. Right now, as we all know we are living with Air that is about 15PSI on our Shoulder. If those 15psi of pressure would be gone, all the concrete that support weight would be easier to crumble because the outside pressure would be 0psi meanwhile, some air particle in the concrete would try to expand with those 15psi stuck in it. It wouldn't become "dust" but it would definitely have tendency to crack much faster and then crumble.
I think that if oxygen was to magically disappear from the universe from one second to another, crumbling concrete would be your smallest of problems...
I just watched this one, I love your vacuum chamber did you build it or buy it? The landscape stone you used may not be just concerned. The company I worked for, which I'm not moving right now, would donate their solid waste from paint and polymers to mix into concrete for landscaping stones. This was an environmentally safe way of disposing of solid paint waste. As well as it added strength to the landscaping stones and they could use it for coloring I believe as well it was told to me. I don't know if having a polymer in the Stone as a binding agent to the concrete would add anything else to it. I was also wondering if it had any air pockets in it that would pull the air out during the vacuum. I'd be interested to see what that vacuum chamber would do to certain natural stones or geodes since they usually carry some level of moisture or air pockets in natural stones.
Good points made. For concrete and most rocks, their own toughness will likely always withstand 0 atmospheres, regardless of any air bubbles, unless the rock is thin, soft, and filled with quite a lot of fluid/gas compared to its size. Even the vast majority of geodes wouldn't pop in a vacuum.
Curing concrete in a vacuum chamber vs in air would affect it if you had a larger time period. As a way cement cures is that the CaO in the cement bonds with CO2 in the air which turns the lime (CaO) into limestone (CaCO3) which is also why the concrete exposed to air was more of a whiteish color. And in a vacuum obviously you don't have any CO2. So in the long term this would actually have a pretty big difference in the strength of the 2 concrete samples.
It will break the water. We will die at an instant. And we won't go down in flames, because there will be no oxygen to burn all the molecular hydrogen.
It would more that just break it, it would change materials from one thing to something completely different. I mean yeah Water would turn into hydrogen instantly, and water is a pretty simple material at a molecular level, other materials would turn to things even more unrelated to it.... It's like the level of turning metal into gold weirdness stuff that would happen
That was really interesting. I heard that the ancient Romans knew how to make concrete that could set underwater. I'd love to see you do something with that. Maybe an explanation of the differences between it and normal concrete or some kind of side by side experiment.
Most concretes will set underwater. What the romans had was self-repairing concrete - made using lime conglomerates. From Wikipedia: "Recent research (2023) found that lime clasts, previously considered a sign of poor aggregation technique, react with water seeping into any cracks. This produces reactive calcium, which allows new calcium carbonate crystals to form and reseal the cracks." Honestly, that's pretty freakin' genius.
@@eddyblackmore2834 It's not genius, it's a result of literally being incapable of creating purer cement. The presence of the impurities are what results in an incomplete and inefficient reaction, thus leaving material which can react later. They could not have done any different if they tried, it's just a natural result.
@@catsabotage3362 There was a ton of knowledge about chemical reactions from long ago. The arabs collected a lot of the chemical recipes of the old mediterranean and middle-east empires in a book called Al Chemia. They had esoteric (and spiritual) explanations about why some substances react one way in certain situations and another way in other situations. Finally the Europeans use and tested an old greek theory of atomic elements and the concept of thermal energy instead of the standard classical elements air, water, earth and fire and were able to formalize the mathematical formulas recipe books we call chemistry,
The videos that talk about a world without oxygen are talking about scenarios where the element of oxygen just completely vanishes, not about atmospheric oxygen. If Atmospheric Oxygen disappears then the only noticeable thing that would happen is that any oxygen dependent lifeform will just suffocate but if the Element of oxygen disappears then we are without a doubt fked
That's not what those videos mean. They clearly mean oxygen gas and not oxygen molecules, otherwise all life including microscopic species are majorly made up of oxygen, and would die without it in an instant. Concrete turning to dust would be the least of our concerns when all life is at stake.
Most people would just assume they're talking about the gas but I think they were still fine to interpret 'no oxygen' as oxygen within compounds too. It'd just break down a LOT more stuff than concrete.
This proves that most of the videos on RUclips are made by people that don't know what they are taking about. Thanks for this video, hope the other "content creators" learn something today
Of course, while we want to see the answer demonstrated right away, it was pretty obvious. The real value in this channel lies in the further explanations.
As a fellow PhD of Chemical Engineering, I find it extremely frustrating when people can’t distinguish among oxygen the element, oxygen molecules in covalent bonds, and oxygen gas (or “molecular oxygen”, to add more confusion). I tried so hard trying to explain to a dude that the oxygen mentioned in the notion that “42% of the moon’s composition is oxygen” is not molecular oxygen! And he just kept saying that there is no air on the moon… 🤷🏻 Damn the American public education system failed so hard!!!
(this is joe, PapaO, not MommaO) I worked as a vibrator on original I-15 Interstate overpasses, and even in winter, it needed at least 40 F to cure, so temperature was a factor, I guess no dust because the atmosphere does not penetrate the cement block, I would guess that in a vacuum would be a major factor in slowing the curing process. there would likely be small air bubbles within the wet concrete, which causes a major FAIL (a vibrator removes the bubbles while it is still wet). Not sure how it is handled today. Fun to watch the video, my son :)
GRX yes they did. They said it at the very beginning of the video. Their videos are not dumb just because the majority of the masses can’t pay attention when someone is talking. They are not misleading. Which is why he said they were correct. ASAP science is dope.
Nice video, actuallcy if you think about it, the concrete cures in a vacuum, only because the inner part of the thing is not in contact with air while it curates only the exterior layer.
@@nicholaspratt8473 If concrete was destroyed with no oxygen in it at all, then being underwater wouldn’t effect it since water is made if 1/3 water. Your logic of disproving me is that you can’t breath underwater dispute the fact that there’s oxygen in it. That’s stupid. Fish live by converting the water they inhale into oxygen, but humans can’t do that. By your logic, if something has oxygen in it, you can breath it? Can you inhale and exhale concrete? Or water? No. See how this falls apart? (side note: hopefully this doesn’t come off as scolding, it’s meant to rather be more questioning than scolding)
@@whenwhen2284 Yes it does seem like scolding. Explaining that humans can't breath concrete. Make an extrapolation. Let me simplify it for you. I never said there's no oxygen underwater. There's air in space, in his vaccuum chamber, and in water. Don't go spreading false information now. Highly oxygenated water is up to 9 parts per million. A slight few orders of magnitude less than 1/3. You're confusing the atom with the molecule. I know the "oxygen from Earth" question was tweaked to be oxygen atoms removed. Even with the oxygen in water molecule the oxygen would be inaccesible to concrete. I was making fun of all those that think lack of oxygen destroys concrete. You're playing devils advocate. You watched this video to hate on those idiots. You're in that mindset. Take a step back. My bad too. I got into a hating mindset. If you didn't see I was very rude. I was distracted and didn't read your full message. Forgive me, friend
@@nicholaspratt8473 Thank you for clarifying you were making fun of people who think there is truly no oxygen under water. I can get worked up sometimes I n comment sections when someone is playing dumb, so thanks for clarifying. I genuinely appreciate the clarification. I have trouble with tone in text. Also, I didn’t come here to hate on anyone. I came here because it was a topic that interested me. Also I hope I wasn’t coming off as too judgmental towards you. Speaking of which, while I do appreciate you telling me what you were trying to say, just say it in a more respectful manner next time, since I’ve found judgmental/apathetic tones can sometimes aggravate someone and cause them to not read what you typed out, assuming it was just a long, winded text filled with ad hominem attacks, which will cause them to type out a long winded text filled with ad hominem attacks. I speak from personal experience
Nah, it's definitely the "I Fucking LOVE Science"/"Follow the Science" people who all got Ds in high school and get all their scientific information from Tiktok and Black Girl Twitter
Thank you for posting this. Those claims always seemed wrong to me. They shouldn't bother with the premise of removing every oxygen atom - rather all atmospheric O2 and O2 dissolved in water. That's a more realistic premise and what people really think of when removing oxygen from earth.
1:17 The action lab explains that concrete is made of cement and sand “So i’m using concrete 5:35 The action lab: So the cement didn’t really do anything in the vacuum chamber
For your vacuum tests, consider having a second chamber at twice the volume. Pull as complete of a vacuum on the larger chamber as the pump will allow. Then have both chambers plumbed together with the smaller of the two being the test chamber. When it’s time , open a valve and let the larger chamber evacuate the gases from the smaller. I was just thinking the abrupt pressure change might have more filmable effects. Perhaps not. You’d have another vacuum chamber… that’s cool. Thanks for the video
I believe concrete is defined by a mix of cement, sand, and gravel or some larger rock aggregate with water mixed in as well. Cement and sand with water mixed in is just called mortar.
Great video, but I think the apparent brightness difference between the two samples, (that you note at about 10:00), is due more to uneven illumination. I note that the backing paper itself appears brighter, on the brighter sample. Just a small quibble. :-)
*_dust is just boneless concrete_*
I'm boneless me
Tomato
why are u here
Stop copying justin.y
Why are u everywhere ?
By that logic, removing all oxygen would also turn the oceans into hydrogen gas.
Well yes
If oxygen was removed from all molecules, you would have much bigger problems than concrete crumbling. The human body is 65% oxygen by mass. All life would die, including the microscopic kind, as DNA itself contains oxygen.
@@imarchello the earth's crust is made of silica so the entire crust would collapse
@@wedmunds yeah but then why didn’t earths crust crumble when it had no oxygen🤨
@@skylar4941 hes just silly
I worked with concrete years ago. During that time I learned or was told several things not mentioned in your video.
1- A normal pour (like homeowner sidewalk) would harden enough to walk over it in a day or two. Bad idea. It isn't set enough. A full set time would normally be over 3 weeks. But long before that it would survive normal wear and tear (walking or bicycling on it). A day or two is too soon.
2- Stronger mixes (more cement) cure faster and get hotter. And the strength may be needed for a "structural" application.
3- A standard guide would be to cover fresh concrete for a day or so. Why? Because some of the water trapped inside couldn't evaporate if the outer surface has hardened and dried. And you would prefer the concrete to "set" from the inside out.
4- Water is trapped inside curing concrete and it takes time to dry. Harry Homeowner makes a BBQ pit and uses it too soon. Then it blows up as the trapped water turns to steam inside the mortar.
5- Concrete is formulated for various applications, often by adding chemicals before mixing. Some make it set faster, as you would want in cold weather. You want it setting before the water in it can freeze. Or you add a chemical that entrains air within the concrete. "Air-entrained concrete contains billions of microscopic air cells per cubic foot. These air pockets relieve internal pressure on the concrete by providing tiny chambers for water to expand into when it freezes."
Minor comment that is normal for all of us. We frequently swap "cement" and "concrete." as you did in the video.
I thought hardening of concrete was because of some kind of chemical reaction instead of water leaving it?
@@vksasdgaming9472 I think it is both. The chemical reaction creates a lot of heat. Especially if there is a higher percentage of cement. Or possibly some additives put in to accelerate the setting. I guess the water is part of that, and does seem to get released during the process. Having the surface moist may allow a path for the internal water.
@@vksasdgaming9472 Both: the reaction with oxygen and/or water and/or CO2 is what makes It harden, but water needs to be removed slowly, so the cement slurry or concrete has the desired porosity, texture and elasticity.
Kinda similar to how important is removing water gradually when baking bread or cakes.
P.S.: There is the exception of using hydrophillic cement, since It is designed to harden when damp and inside/besides water. In that case, only the reaction with water matters.
A standard 50/50 3500psi exterior has chemicals in it to help it set quicker...standard set time is 28 days and can be accelerated with the aid of chemicals
that was like the longest comment ever..
Concrete also typically has gravel mixed in too. Concrete after it hardens [it doesn't just "dry"] it is basically a rock. Rock don't require oxygen to maintain their cohesive density.
If you put wet concrete in a vacuum it will dry/harden just fine. The quality of the concrete might be reduced because of the accelerated moisture removal via the vacuum.
water added to concrete makes crystals in the concrete expand and enter lock. and there is an air content when mixing it on industrial scale, but it needs to be balanced in order to prevent bubble texture.
rock may not need oxygen to survive but some rocks require moisture or they will break and crumble. some actually crumble and rot after being exposed to oxygen. concrete is almost as hard as rock as its made up of rock mostly but its not uniform so it will always have disadvantages.
Because the process is a chemical reaction, it's not drying or hardening. The correct term would be setting or curing.
Specifically, concrete is said to be set once it is stiff enough not to deform under pressure, such as someone walking on it. Concrete is said to be cured once it reaches full design strength.
Generally speaking, drying would imply that water leaving the mixture causes the change, and hardening would imply a physical process (such as work hardening) is causing the change.
Plus putting it on those very dry pieces of wood probably sucked some out from the bottom
I was just thinking, "It's too bad there's no Oxygen on the Moon, that must be why the Apollo Astronauts didn't bring any rocks back."
I feel like "if all oxygen disappeared concrete would crumble" is based on some ridiculous, hypothetical case of "aliens literally took every oxygen atom off the planet", at which point crumbling concrete would be the least of our concerns.
We'd turn into hydrogen gas
I'm thinking QAnon had something to do with it!
time to get gassy
@@mawinstallation6626 no
Shouldn't silicate be SiO3? In the video it says SiO5.
you can’t pull out oxygen that’s already bonded to the concrete molecule
"Concrete molecule"
@@joesegovia6170 -- Hehe
Isn't vacuum just removing air or whatever gas is inside?
for electric string it’s removing the air within the chamber, but it would have 0 effect on the concrete since the oxygen molecules are bonded to other molecules within the concrete. What people mean when they say it would turn to dust is that, if ALL oxygen disappeared, including the molecules bonded to the concrete, the concrete would lose all structure and turn to dust.
Concrete isn't a molecule or an atom on its own, it's a composite mixture...
"So, you use cement to make concrete." THANK YOU!!! Thank you for explaining that! I test concrete for a living and it bugs the snot out of me when people say "cement" when they mean "concrete". It's like saying I'm going to bake a flour. Or, have a piece of flour.
Well... i mean its not like they just teach that in school.
...eh???
From me - a thicko...
I used pure cement once, big mistake....
But why this even happening? It is two distinct things, why would possibly anyone mix them up?
@@AlexandrKovalenko "mix them up" heh heh heh heh heh surely that was a pun right?
As a masonry contractor, I'm quite familiar with the properties of concrete. Concrete will even set up even under water. The reason the concrete set up slightly slower in the vacuum isn't because of lack of air but rather lack of air movement. Mortar on a corner of a building will set up faster than the rest of the wall because it experiences more air movement like wind reducing the moisture content. While this does make it set up slightly faster it does not strengthen the concrete in the long run. In fact wetting the concrete and keeping it wet during the first 7 days of the concrete cure will increase the cure time slightly but can greatly increase the strength of the concrete when fully cured, as well as more evenly cure preventing cracks.
Water boils and turns to vapor as the pressure goes down. So I would expect it to harden faster as the water is forcibly sucked out of the concrete. But I guess at some point right below the surface, the weight (and thus pressure) of the concrete is higher than 1 atmosphere, so the water remains a liquid internally.
@@cyleleghorn246 Yeah, perhaps on the surface as you said. But in the industry we call concrete "green" when it's still in it's initial cure period and at this point it is susceptible to easy damage and is the color green. This is why when concrete is "green" you do not want people walking on it. When you watch the video, the concrete in the vacuum actually cured a little slower and was greener and crumbled more. If there's high winds when you're working with concrete or mortar it set's up crazy fast because the air is pulling the moisture out of the concrete, this wouldn't happen in a vacuum.
@@Ryan-ff2db thank you for explaining it more. It does make sense that as concrete cures with an exothermic reaction (releases heat) that wind will speed up the process by giving it wind chill. And in a vacuum, since there is no wind or even air to conduct the heat away from the concrete, this would become a blackbody radiation problem, which is the slowest way to get rid of heat. Same reason it's so easy for space ships to overheat in space due to human warmth and electronics, even though at all the same settings they'd be running very cold anywhere on earth surrounded by air or touching the ground. There's just nowhere for the heat to go, nothing for it to travel into to escape the ship, or in the case of this video, to escape the concrete and allow the reaction to continue
I would be curious to know how actual wet concrete would react in a vacuum, and not just a wet cement mix. That wasn't wet concrete that he put in there, it was just wet cement.
Would the sand have an effect on the way it cured?
@@petrolhead0387 He used concrete. Cement is a fine Portland powder that forms a slimy paste if mixed with water by itself. Concrete is Portland mixed with gravel and sand, which is what you see in the video.
She: Honey, what are you watching?
Me: What happens to concrete in a vacuum.
She: Alright, what does happen to concrete in a vacuum?
Me: Well, nothing.
...
LOL
LoL!!! Good one, buddy! :D
i know.... just wasted 11 minutes of my life. sorry but this video was for the views, not for the likes
@@maik1982 science isn't your thing, it's it?
As long as you’re not watching smut right?
There’s rocks in space, so I’d assume it’s still solid in a vacuum.
@@idiot5637 The most I would expect is that Concrete would be weakened in a vacuum somehow. But the idea that it would turn to dust is pretty extreme...
@@idiot5637 yea, it would be a pretty limiting structural material if it required atmospheric oxygen to retain its strength. And given that its used in basically EVERYTHING, it wouldnt make sense to have such a major restriction like that.
Amen
@@idiot5637 I believe at least some of those videos are more along the premise “what if all oxygen atoms suddenly disappeared one day” to include oxygen atoms bound in compounds. Under that premise they are probably correct; concrete is a mixture of various oxides and removing the oxygen from those compounds by whatever mystical means would be catastrophic. Just not very likely.
The thing about concrete in vacuums is, on that basis, a misunderstanding of the premise of the videos.
Not that they aren’t still clickbaity trash.
@@randombloke82 that's what i was thinking.
Oxygen is not air. If oxygen really disappeared, oxygen compounds such as water (and sugar!) would also dissappear. and i think we all know water doesn't just cease to exist when put in a vacuum...
people: "all the concrete would turn to dust if we removed the oxygen!"
the concrete without oxygen:🗿
The experiment isn't actually without "oxygen". Concrete does have oxygen molecules inside of it's structures. When you put concrete in a vacume it doesn't break up because only the oxygen in the air is sucked out, but not from the concrete.
@@thatpersononline right
@@thatpersononline Use your Grand Magic to suck out the oxygen instead
@@incognito7705 It isn't. The are Oxygen molecules present IN concrete, which got there by a chemical reaction. And you can only suck out the Oxygen from the atmosphere, not from the compound which makes up concrete.
@@incognito7705 Oxygen is present as a binder agent in concrete. It forms cement into a cohesive mass. There are pores in the concrete, yes, but so is in our bodies. When he put his hand in the vaccum, going by the same logic, it should have sucked stuff from his body. But it didn't. Same happens here. The only way concrete will turn to dust if Oxygen as an element disappeared in concrete.
I love how Action Lab knows the result, but he takes his time to do all these experiments anyways to settle these myths once and for all.
He also demonstrates the scientific method quite well, he allows us to learn via discovery by doing the discovery for us in his videos.
NASA did this study. Glass, steel, and concrete created in 0 oxygen is much stronger.
All hail civil engineering!
no tiny air gaps less likely to break
Imagine humans created in a 0 oxygen environment
Harder but more brittle, not necessarily stronger
@Joe no air doesn't mean no space
100% nothing will happen!
Aggree
Its common sense tbh
+
I feel like I've wasted 11 minutes of my life :(
Me too. Concrete will just probably become depressurised and the upon sudden pressurising I guess that's what makes it brake.
Concrete: *does not turn to dust*
*Thanos didn't like that*
ً*slow clap*
Aqil Hizam was it though?
He couldn’t take it anymore so he snapped
What do u mean who is thanos
@@aqilhizam4073 you have no sense of humor
I may be mistaken, but concrete is a product of hydration, where the water allows the cement particles to come together around a molecule of water. Considering that there is hydraulic cement, which doesn't need oxygen to make. The hydrating water is essentially locked in a crystal cage.
The only thing that a vacuum might do is lower the vapor pressure which allows the water to escape the cement. Probably not enough to free the bound water, but it might require less energy when you apply heat to it. If you apply enough heat, the water breaks out of the concrete, and you're back to the initial ingredients. Limestone is an example of a rock which needs water to be in rock form. If you heat it, it turns into burnt lime (Calcium Oxide).
I think there are some products which might be weak enough where a vacuum might liberate the water molecules.. maybe gypsum or epsom salts. Vacuum distillation and vacuum drying is a think (freeze drying is forcing the water to crystallize and sublime out).
Interesting question, but boring answer ;)
Q:What do you think will happen
Me: "Nothing"
Q:How sure are you?
Me: "110 Percent"
*Turns on vacuum*
Me: "Why am I nervous all of a sudden?"
When you have a test and dont have learned but you cant cheat for it because she is constantly looking at you
Laom
Lmoa
omaL
oLma
They mean that it would collapse if every oxygen molecule inside the concrete were suddenly removed, which is impossible to test
Daniel Walther how about the meteorite rocks in space?? There's no oxygen in space right?? Yet they're still solid..
@@alphaalpha3557 there is oxygen in space. Oxygen molecules that are a part of larger compounds. I'm not referring to pure oxygen as a gas.I'm talking about just the molecule W 8 protons. If every one of those were to instantaneously dissappear in just about anything it would fall apart
For example if you were to remove all the oxygen molecules from water (h2o) it would just turn into h2 which is hydrogen gas, and also dust from whatever else is in your water like minerals and impurities and whatnot.
@@Gangstabean420 I think you confused him at ( there is oxygen in space ) but you completely lost him at ( larger compounds ) he was gone by ( protons ).
Impossible
A few points here:
- For concrete to turn to dust, you'd need to pull it to it's tensile breaking point. Which is roughly 3Mpa (mega pascal) for homemade concrete.
- Mpa is a measurement of force of impact on a certain area. It's important how big the area of measurement is. Let's say the area is 1cm square. In this case a vacuum or anything else would need to pull with 30kg of force on every single square cm of that concrete piece to reduce it to dust. Quite a lot of force on such a small area.
Another way to look at it is if for example you attach a 3x3 inches metal plate with glue to concrete. You'd need around 170kg (375 pounds) of pulling force on that steel plate to pull concrete apart. If the glue is strong enough that is.
- Concrete takes a whole month to fully cure, but it reaches 60% of it's strength in a day. I'm a construction engineer by trade, so I know a lot about concrete.
- An additional point to all curious about why concrete falls apart, it is because of carbon dioxide (CO2) it bonds with hidroxides in cured concrete, reduces it's ph value, and returns it to it's more natural form - limestone components so it crumbles away. So essentially in space concrete is everlasting, there is no co2 to chemically destabilize it. While in Earth's atmosphere it's destined to fail the moment it's made.
Is it "destined" to fail literally, as in if the mixtures is poured/cured in atmosphere, it's already been exposed to factors that inevitably lead to failure? Or is it the sustained presence of atmospheric variables that _eventually_ lead to failure?
I'm wondering if it's possible to replicate concrete in vacuum, and if possible, if it would have a positive impact on the materials durability/properties.
@@Nikolai18A You can pour concrete in vacuum, it's an anaerobic chemical reaction, it needs no air to cure. Its also common practice and desirable to cure test samples of concrete underwater for 28 days so the tests have as little as possible sample deviation. The carbonatization process is constant, the concrete absorbs CO2 from atmosphere for years and decades, and very slowly but surely loses it's properties. It's also not that it loses its integrity altogether, it loses some, it's rather that it gets much higher acidity and rebar inside corrodes and then breaks apart, then what was standard pressure can break the same construction easily. That's why you see rebar exposed and corroded and breakaway concrete on old buildings. So yeah as long as we live, CO2 is present in the atmosphere and standard Portland Cement made concrete from limestone is inevitably gonna fail.
The Materials Engineer has entered the chat.
Or, put simply, concrete is strong and can handle 1 atmosphere of pressure whether it's from the outside or the inside.
as more CO2 is added to the atmosphere concrete would last for less and less time based on this
"what would happen if we removed one of the main building blocks for literally everything" is perhaps the least exciting thought experiment I've ever heard.
Alternate title: the action lab makes people stare at a concrete block for 11 minutes
lol😂
More like five minutes
Not just them also us
If they didnt the believers of the dustification would call bullshit lol this is for the dustifiers not those with intellegence
Fast forward works for me…. Peace, man.
Odd, I always thought that in a vacuum, a brick turns into bread.
Same...
I thought things just spun quickly round a tube
No you idiots, it turns into a pink and purple bunny rabbit...with sparkles.
How stupid you are. The Moon is made out of concrete and it still didn't crumble in the vacuum of space!
@@TheKitMurkit lmao what? The moon has different theories of how it was made. It might not be concrete. Might even be a dried up ball of magma. So a spherical Igneous rock. That's why it's so white is one theory that I personly believe in. So we can't say that it doesnt crumble because of that 1 theory that might be wrong.
He thought the concrete would go
“Mr. Stark I don’t feel so good”
⠀⠀⠀⠀⣠⣶⡾⠏⠉⠙⠳⢦⡀⠀⠀⠀⢠⠞⠉⠙⠲⡀⠀ ⠀⠀⠀⣴⠿⠏⠀⠀⠀⠀⠀⠀⢳⡀⠀⡏⠀⠀⠀⠀⠀⢷ ⠀⠀⢠⣟⣋⡀⢀⣀⣀⡀⠀⣀⡀⣧⠀⢸⠀⠀⠀⠀⠀ ⡇ ⠀⠀⢸⣯⡭⠁⠸⣛⣟⠆⡴⣻⡲⣿⠀⣸⠀⠀OK⠀ ⡇ ⠀⠀⣟⣿⡭⠀⠀⠀⠀⠀⢱⠀⠀⣿⠀⢹⠀⠀⠀⠀⠀ ⡇ ⠀⠀⠙⢿⣯⠄⠀⠀⠀⢀⡀⠀⠀⡿⠀⠀⡇⠀⠀⠀⠀⡼ ⠀⠀⠀⠀⠹⣶⠆⠀⠀⠀⠀⠀⡴⠃⠀⠀⠘⠤⣄⣠⠞⠀ ⠀⠀⠀⠀⠀⢸⣷⡦⢤⡤⢤⣞⣁⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀ ⠀⠀⢀⣤⣴⣿⣏⠁⠀⠀⠸⣏⢯⣷⣖⣦⡀⠀⠀⠀⠀⠀⠀ ⢀⣾⣽⣿⣿⣿⣿⠛⢲⣶⣾⢉⡷⣿⣿⠵⣿⠀⠀⠀⠀⠀⠀ ⣼⣿⠍⠉⣿⡭⠉⠙⢺⣇⣼⡏⠀⠀⠀⣄⢸⠀⠀⠀⠀⠀⠀ ⣿⣿⣧⣀⣿.........⣀⣰⣏⣘⣆⣀⠀⠀
Nani
@@abramjsseneca9116 how??!!
@@ItsPlayer01 copy and paste
Bob, I don't feel so good...
Very patient, good job.
I sure hope most schools are still teaching very basic chemistry, but starting to have my doubts....
nothing but remembering all sixhundred and sixty six letters of LGBTQ NX cubed.
1:46 - THIS is why you're here.
Under appreciated comment
Thank you so much
yeah on a lot of videos i get bored and click on to something else if the narrator is still rambling on after the first minute...
Like name like work 😀
Yes
And people called me an idiot because i never believed solid concrete would turn to dust in space and oh look I was right
@Jeffiam Man so we can't watch videos made by morons?
@Jeffiam Man well he probably didn't know before he clicked the vid and only after watching came to that realization. You can't just assume he is a subscriber. Personally I don't think he's stupid either. Just misinformed.
Water will turn to hydrogen if we remove the oxygen too
Calling a man with PHD in chemical engineering and full time engineer stupid is a wild idea to me 😂 he's a lot smarter than you I'm sure of that
If your talking about the oxygen gas than no it won't crumble but if your talking about literally every oxygen molecule than the concrete will crumble and that's what he told us about in this video
As a builder I offer the following clarification on the terminology for those who are interested:
Concrete is a combination of cement, fine aggregate (sand) and course aggregate (sharp rocks).
Sand & Cement mixed together without the course aggregate is called Sand & Cement which is also called Mortar (for bonding bricks) or Grout (used between your tiles).
Sand & Cement mixed with Clay is called Render.
Originally though, Mortar was made from only Sand and Lime as Cement was too expensive for most applications. The advantage of this mix being that Sand & Lime can be recycled if it is ground down and remixed with water to make wet Mortar again.
With all of these cement based products, additional additives can also be added to improve plasticity, accelerate drying times, delay drying times or even to make the product less permeable to water, depending on the desired application. The faster you cure concrete the more it cracks.
And cement based products shrink as they cure, so products like “non-shrink grout” overcome this because they have an additive that expands the product slightly as it cures while the cement shrinks at the same time, therefore the net effect is “non-shrink”.
I learned more from this comment than the video.
Wow. Thanks for that comment. You did great at explaining things.
Make your own channel and explain things like this.
hi rich, when donate?
"Sand & Cement mixed together ... is called Sand & Cement"
*hmm sounds right*
"Human body is 65 percent oxygen."
-Sun tzu, the art of war
I'm 100% sure that the concrete will just remain the same, I just can't imagine it crumbling to dust
Of course not. Oxygen is in the bond. A vacuum isn’t going to remove it anymore that it’s going to remove the block.
I love how you address the facts without putting anyone down for confusing how this works!
TM
"Facts don't care about feelings" 😜
This was a puzzling belief in the first place , why would concrete crumble to dust without an atmosphere
I didn't hear any facts, all I heard was stupid fucking annoying background music so I shut off the goddamn video.
I am fucking sick of music videos instead of information videos. I didn't come here to listen to fucking music I came here to listen to somebody talk.
So fucking annoying but everybody just accepts it like complacent little fucking sheep.
@@rivermcratt3683 calm down bro nobody likes the music
This guy can make "watching concrete to dry" something interesting. Coming up: "What happens if you try to dry paint in the vacuum" that's my irrational request now xD
I kinda want to see that now...
@@MinistryOfMagic_DoM Great! Now we just need his 3.5M subs to join us and he'll do it
Right after that -
"What happens if you don't mow the grass in a vacuum?"
it’s gonna lahm 100%
@NexusGen Inc. well if neil Armstrong foot sill on the moon then paint should still be wet
Really interesting. I'm not a chemist so it was really nice to have the chemistry explained!
Who else wants to have this guy as their school science teacher?
I know! I would be AWESOME!! I LOVE this guy! He inspired me!!
OMG that would be soo cool! Btw I LOVE your videos too!! you are super underrated and deserve alot more subs!!
Me. I have been calling him "Teach".
Nope i am good with my professor becz they are from imperial University of London so yeah i don't but he is good
I want too lol
I know I do.
I don't think anything is going to happen, and 95% sure of that.
Same …
Agreed. Idk where people get these ideas that suddenly everything will end... lol and if anything he took it to extremes. He didn't just remove oxygen, he removed nitrogen, hydrogen and many other gasses etc
I agree
I'm with you
Same
I really respect you for going through with this experiment and for trying to guess why the confusion existed in the first place.
This was actually really interesting. I expected a different outcome with the concrete setting in a vacuum. That was a cool experiment. Got a good lesson in concrete aswell
literally made us watch concrete dry.
Better than watching grass grow, I guess.
@@nickdonovan1447 but not better than watching paint dry
Will a wet cloth dry inside a vacuum chamber? 🤔🤨
Please make a video on it
No it will not. Think about it, the water molecules on the cloth will remain there
Dinara actually you’re wrong with the low pressure the water would completely boil away
@@Dinara1up The low pressure allows the water to boil at room temperature and phase change into gas.
@@ericnelson3102 but were they will go? As it is closed chamber it cannot go anywhere.
@@PremKhunt If it boils and all the gas is being pulled out by the chamber...
Those Hypothesis are pretty concrete :)
Yeah, not very solid
gets 1 million dollars per year, but still cant buy a vacuum pump LOL
Who else was like "that's such a stupid thing to try that I won't waste my time with this video" and then thought "what if it actually turns to dust and I'm about to miss on the most interesting video of the year" and clicked on it?
i saw the uncured concrete by hovering over the video and thought "there is no way it actually turned into powder right?" and guess what it didnt.
@@m81895 but you still watched it, so...
X2
Yeah to be honest I did as well, even though I learned how concrete works in engineering class😔, it's sad to say I got too tempted. I also thought it was sad how people thought that the oxygen just sat inside the concrete as if they acted like pillars preventing it from crumbling under constant weight.
Hey thunkus wads how about you go learn how you cant un-bond oxygen by sucking it
It’s gonna crumble revealing an “Infinity Stone”.
*_That would be epic_*
Nope because thanos got all the stones
@@walkingbird8615 *_I did_*
@@apexgear2340 I know you did,we all know you did xdd
Haha
"They paved paradise and put up a parking lot"...in space
Can you put vacuum chamber inside a vacuum chamber? Just asking.
Judging by what we did here on earth, sounds possible
@@AwesomeTheAsim already did it
I think one reason of this myth is because when cement/concrete as cured and is total dry.
If the concrete is used to hold Weight (Bridge/Building) It would have already a stress to stay in one piece.
Right now, as we all know we are living with Air that is about 15PSI on our Shoulder. If those 15psi of pressure would be gone, all the concrete that support weight would be easier to crumble because the outside pressure would be 0psi meanwhile, some air particle in the concrete would try to expand with those 15psi stuck in it.
It wouldn't become "dust" but it would definitely have tendency to crack much faster and then crumble.
@@TwinShards That completely makes no sense. LOL!!!
I like his shirt in this video. Good reference to a classic movie
This guy would be the Best science teacher
But he isn't right 😂
He sounds like the teacher from Beavis and Butthead.
@Lester Piglet 😂😂😂
I like the can you make a stable magnetic floating table or theoretically create a time machine with our technology and understanding
you tube is his classroom !
You're my favorite RUclips University Professor. Brilliant man.
They meant that if oxygen element vanished from the earth and all bonds.
Then concrete never exist
I think that if oxygen was to magically disappear from the universe from one second to another, crumbling concrete would be your smallest of problems...
@@StefanBrodd hahah yeah lmao
@@nyxtv3518 You’re a bit confused
If that's the case then water would not exist and would turn into a gas
Concrete doesn’t need air to dry but it does need water to hydrate the cement. Dang as I was typing this you mentioned hydrating the cement
Not crumble because for it to crumble the oxygen in its structure has to disappear not the air
harrison graden nearly everything has oxygen in it
harrison graden in nature dissappear is impossibile, it become.
@ *R D*
I see what you did there.. 🤣😂
Ca3SiO5= CASIO...MUCH BETTER
😂
Wrong!
It's made of gravel sand and bone meal and place it in water and brake with pickaxe
Fact
Pffff. Obviously you use grey dye for this.
No u dont use bone meal (not anymore). U use dyes.
Why bonemeal?
Well, bone meal is a dye too...
I just watched this one, I love your vacuum chamber did you build it or buy it? The landscape stone you used may not be just concerned. The company I worked for, which I'm not moving right now, would donate their solid waste from paint and polymers to mix into concrete for landscaping stones. This was an environmentally safe way of disposing of solid paint waste. As well as it added strength to the landscaping stones and they could use it for coloring I believe as well it was told to me. I don't know if having a polymer in the Stone as a binding agent to the concrete would add anything else to it. I was also wondering if it had any air pockets in it that would pull the air out during the vacuum. I'd be interested to see what that vacuum chamber would do to certain natural stones or geodes since they usually carry some level of moisture or air pockets in natural stones.
@@huntershepherd8838 Sorry, I tend to spill out when I start talking.
Good points made. For concrete and most rocks, their own toughness will likely always withstand 0 atmospheres, regardless of any air bubbles, unless the rock is thin, soft, and filled with quite a lot of fluid/gas compared to its size. Even the vast majority of geodes wouldn't pop in a vacuum.
Omg I put it on 0.75 speed and it sounds like he's drunk 😂😂🤣
True lol
Try 0.5 😁
Oml
I thought it was originally .5, slow ass video.
Try 1.0
Does anybody else feel relieved when he lets the air back in?
When he's explainibg how it works i never felt sleepy.. Unlike my teacher
Your teacher felt sleepy when Action Lab explains how it works?
@@adb012 lol i meant i get bored when my teacher explains things
Hanging in your sentence, I have found a participle.
Not really as there is no explanation
it's because you are interested in this
unlike school that obligate you to learn things you don't have interest in
Removing most air, and removing all oxygen atoms, are two different things.
Curing concrete in a vacuum chamber vs in air would affect it if you had a larger time period. As a way cement cures is that the CaO in the cement bonds with CO2 in the air which turns the lime (CaO) into limestone (CaCO3) which is also why the concrete exposed to air was more of a whiteish color. And in a vacuum obviously you don't have any CO2. So in the long term this would actually have a pretty big difference in the strength of the 2 concrete samples.
This is off topic but I love his Back To The Future shirt
Removing oxygen on molecular level will , break it
Also our dna's hydrogen bonding
It will break the water. We will die at an instant. And we won't go down in flames, because there will be no oxygen to burn all the molecular hydrogen.
Hmm hmm ,that death will be weird
It would more that just break it, it would change materials from one thing to something completely different. I mean yeah Water would turn into hydrogen instantly, and water is a pretty simple material at a molecular level, other materials would turn to things even more unrelated to it.... It's like the level of turning metal into gold weirdness stuff that would happen
@@GummieI whole mountains will crumble, when the chalk loses it's oxygen. On the upside: there will be no rust...
This. Removing oxygen is not the same as removing atmospheric pressure.
That was really interesting. I heard that the ancient Romans knew how to make concrete that could set underwater. I'd love to see you do something with that. Maybe an explanation of the differences between it and normal concrete or some kind of side by side experiment.
Most concretes will set underwater. What the romans had was self-repairing concrete - made using lime conglomerates.
From Wikipedia:
"Recent research (2023) found that lime clasts, previously considered a sign of poor aggregation technique, react with water seeping into any cracks. This produces reactive calcium, which allows new calcium carbonate crystals to form and reseal the cracks."
Honestly, that's pretty freakin' genius.
@@eddyblackmore2834 It's not genius, it's a result of literally being incapable of creating purer cement. The presence of the impurities are what results in an incomplete and inefficient reaction, thus leaving material which can react later. They could not have done any different if they tried, it's just a natural result.
@@eddyblackmore2834 Well, they didn't really know why they were doing it, only that it works. It's still fascinating though
@@joramzimmermann5375 who says they didn't know?
@@catsabotage3362 There was a ton of knowledge about chemical reactions from long ago. The arabs collected a lot of the chemical recipes of the old mediterranean and middle-east empires in a book called Al Chemia. They had esoteric (and spiritual) explanations about why some substances react one way in certain situations and another way in other situations. Finally the Europeans use and tested an old greek theory of atomic elements and the concept of thermal energy instead of the standard classical elements air, water, earth and fire and were able to formalize the mathematical formulas recipe books we call chemistry,
1:50 Is when The test start
0.00 is when learning begins !
@@JUST-UK-JAY really what do you think about school and colleges
@@pawankumarsingh4441 I think theyre useless boomer
@@JUST-UK-JAY I prefer answers first explanation second what are u gonna say about that
Thx
This is fake
Concrete block is a paid actor
Actually it's CGI.
@@complexcs8383 its a joke. oh my god!!
Jacob Harris nice man you just wooooshed 2 people
@@complexcs8383 r/iamverysmart
@@-littlelucy-4079 r/whooosh
The videos that talk about a world without oxygen are talking about scenarios where the element of oxygen just completely vanishes, not about atmospheric oxygen.
If Atmospheric Oxygen disappears then the only noticeable thing that would happen is that any oxygen dependent lifeform will just suffocate but if the Element of oxygen disappears then we are without a doubt fked
Not we but whole fkin earth
That's not what those videos mean. They clearly mean oxygen gas and not oxygen molecules, otherwise all life including microscopic species are majorly made up of oxygen, and would die without it in an instant. Concrete turning to dust would be the least of our concerns when all life is at stake.
Most people would just assume they're talking about the gas but I think they were still fine to interpret 'no oxygen' as oxygen within compounds too. It'd just break down a LOT more stuff than concrete.
3 views, 20 comments..
Damn, 3 people, so many opinions
Adarsh Subramanian it’s a RUclips glitch and your comment isn’t needed. We all get it. This is a known issue.
@@jamesbizs it's a joke
@@shade6735 an original one👌
actually. This is original
@@jamesbizs it's not a glitch
Anyone else come from watching the video by What If?
Thanks for the likes my guys
Yes
More like what bs
Yup but thats underrated Af
yah
what if we unsubscribed what if. Hahhshs
Does anyone try to take their food out of the microwave before the time gets to 0?
Dude, I try to do all the stuff I can before the microwave time gets to 0, like timing myself to do all I can and finish before it reaches 0
Chriffendor I want to see that, I always want to do that but obviously i am not stupid
I did that actually and machine turned itself off
I just don't want to hear the beep
Me
This proves that most of the videos on RUclips are made by people that don't know what they are taking about.
Thanks for this video, hope the other "content creators" learn something today
RUclipsrs love to turn 1 minute subjects into 10+ minute videos
Gotta get that ad revenue
Edit: I can't spell
Lol I change the playback speed to 1.75
Of course, while we want to see the answer demonstrated right away, it was pretty obvious. The real value in this channel lies in the further explanations.
you don’t need 10 minutes to make money
@Jake Hodson-Tomokino
I can say “WTF, no!” in a lot less time than one minute!
As a fellow PhD of Chemical Engineering, I find it extremely frustrating when people can’t distinguish among oxygen the element, oxygen molecules in covalent bonds, and oxygen gas (or “molecular oxygen”, to add more confusion). I tried so hard trying to explain to a dude that the oxygen mentioned in the notion that “42% of the moon’s composition is oxygen” is not molecular oxygen! And he just kept saying that there is no air on the moon… 🤷🏻 Damn the American public education system failed so hard!!!
Most education systems in the world are terrible at educating but yeah American ones take the cake.
I mean, you are a PhD holder talking to a normal person about oxygen bonds
based
If only it were better.
@@pojo_1797 they come under high school chemistry - anyone whos gone through 9th grade chemistry should know that much
(this is joe, PapaO, not MommaO)
I worked as a vibrator on original I-15 Interstate overpasses, and even in winter, it needed at least 40 F to cure, so temperature was a factor, I guess no dust because the atmosphere does not penetrate the cement block, I would guess that in a vacuum would be a major factor in slowing the curing process. there would likely be small air bubbles within the wet concrete, which causes a major FAIL (a vibrator removes the bubbles while it is still wet). Not sure how it is handled today. Fun to watch the video, my son :)
Momma O are you his parents?
kool
Worked as a vibrator....
Seems weird lol
@@ningenslayer1165 yes, it does lol
« lol »
OVERUSED WORD
I'm glad you made this.
He's the coolest science teacher on RUclips
could be titled "people with no scientific knowledge will believe to anything but what's logic"
Yeah those other videos are misleading and dumb. They're talking about an absurd scenario where you can magically delete an element for 5 seconds.
It's called a thought experiment and it's how we learned that an object in motion will stay in motion unless acted upon by an outside force.
@@javierpowell4705 False. That was hypothesized then confirmed with experimentation ;)
GRX yes they did. They said it at the very beginning of the video. Their videos are not dumb just because the majority of the masses can’t pay attention when someone is talking. They are not misleading. Which is why he said they were correct. ASAP science is dope.
i mean, in that context we would remove oxygen from our bodies as well. So whole lot of things would be dusted.
@@malpblk Why did they specify concrete then? So many things would be if oxygen atoms were removed. They're intentionally misleading.
Nice video, actuallcy if you think about it, the concrete cures in a vacuum, only because the inner part of the thing is not in contact with air while it curates only the exterior layer.
Concrete underwater: Guess I'll die then
Are you saying being underwater means there’s no oxygen? If so that’s absolute bullcrap, since water is made of 1/3 oxygen
@@whenwhen2284 Molecule. Not quite as you think. I'd like to see you breath underwater XD
@@nicholaspratt8473 If concrete was destroyed with no oxygen in it at all, then being underwater wouldn’t effect it since water is made if 1/3 water. Your logic of disproving me is that you can’t breath underwater dispute the fact that there’s oxygen in it. That’s stupid. Fish live by converting the water they inhale into oxygen, but humans can’t do that. By your logic, if something has oxygen in it, you can breath it? Can you inhale and exhale concrete? Or water? No. See how this falls apart?
(side note: hopefully this doesn’t come off as scolding, it’s meant to rather be more questioning than scolding)
@@whenwhen2284 Yes it does seem like scolding. Explaining that humans can't breath concrete. Make an extrapolation.
Let me simplify it for you. I never said there's no oxygen underwater. There's air in space, in his vaccuum chamber, and in water. Don't go spreading false information now. Highly oxygenated water is up to 9 parts per million. A slight few orders of magnitude less than 1/3. You're confusing the atom with the molecule. I know the "oxygen from Earth" question was tweaked to be oxygen atoms removed. Even with the oxygen in water molecule the oxygen would be inaccesible to concrete.
I was making fun of all those that think lack of oxygen destroys concrete. You're playing devils advocate. You watched this video to hate on those idiots. You're in that mindset. Take a step back.
My bad too. I got into a hating mindset. If you didn't see I was very rude. I was distracted and didn't read your full message. Forgive me, friend
@@nicholaspratt8473 Thank you for clarifying you were making fun of people who think there is truly no oxygen under water. I can get worked up sometimes I n comment sections when someone is playing dumb, so thanks for clarifying. I genuinely appreciate the clarification. I have trouble with tone in text. Also, I didn’t come here to hate on anyone. I came here because it was a topic that interested me. Also I hope I wasn’t coming off as too judgmental towards you. Speaking of which, while I do appreciate you telling me what you were trying to say, just say it in a more respectful manner next time, since I’ve found judgmental/apathetic tones can sometimes aggravate someone and cause them to not read what you typed out, assuming it was just a long, winded text filled with ad hominem attacks, which will cause them to type out a long winded text filled with ad hominem attacks. I speak from personal experience
I've never said this about any of his vids, however, this one was.....nah, can't say it.
He's incredible
I'm confused what type of person actually thought concrete structures would crumble. I'm guessing flat-earthers.
people that only did half baked research for youtube videos
Qanon members
I guess the person means the oxygen from the molecular bonds.
That is actually when oxygen disappears complete in this experiment he can't remove oxygen between molecular that is why brick doesn't crumble
Nah, it's definitely the "I Fucking LOVE Science"/"Follow the Science" people who all got Ds in high school and get all their scientific information from Tiktok and Black Girl Twitter
Appreciate everything you fill my brain with but also, awesome shirt!
"[Concrete] relies on oxygen to remain ridged. "
What if removing oxygen actually just makes concrete flacid?
*removes all your sidewalks' and buildings' oxygen bonds so it turns to jello*
^rigid
ridged and flaccid aren't mutually exclusive - but that's a whole different kind of video...
Floppy concrete go brrr
Thank you for posting this. Those claims always seemed wrong to me. They shouldn't bother with the premise of removing every oxygen atom - rather all atmospheric O2 and O2 dissolved in water. That's a more realistic premise and what people really think of when removing oxygen from earth.
exactly
Theres some *CONCRETE* evidence in this video.....
Eh?
Not really because he cant succ the oxygen out of SOLID FRICKING MATERIAL.
r/foundthecanadian
@@leofreitasa9933 ...?
@@gnostaoticanarchangautand eh?
Ima just *badum tssssss*
Got to love the 90's school science video music in the background
Guess:,nothing because it wont suck the oxygen from the concrete
100% sure
Supporting you
Wp
Exactly for a scientist hes a but stupid
concrete shouldn't have much oxygen in it
1:17 The action lab explains that concrete is made of cement and sand “So i’m using concrete
5:35 The action lab: So the cement didn’t really do anything in the vacuum chamber
He was right, concrete has cement in it.
Literally no one:
The Action Lab: Does concrete turn to dust in a vacuum?
He literally showed all the comments askin him to do it
For your vacuum tests, consider having a second chamber at twice the volume. Pull as complete of a vacuum on the larger chamber as the pump will allow. Then have both chambers plumbed together with the smaller of the two being the test chamber. When it’s time , open a valve and let the larger chamber evacuate the gases from the smaller. I was just thinking the abrupt pressure change might have more filmable effects. Perhaps not. You’d have another vacuum chamber… that’s cool. Thanks for the video
Favorite Word "WHATSOEVER"
Commenter: The concrete will turn to dust!
The Action Lab: *tries it* I didn't, now that's concrete proof!
The Action Lab , 5:00 So I'm here on RUclips literally watching concrete dry; lol.
You do a great job - you're, now, 4M+ subs says so. For best scientific result, single variable changes work best.
Put it on 0.25 playback speed..while he's explaining...... You'll die laughing 😂😂😂😂😂😂😂😂
😂😂😂😂😂😂😂😂 (Hahahaha)
😂😂😂😂😂
What?
@@parkadeigogaming9792 😂😂😂😂😂😂😂😂 (Ha ha ha ha ha ha)
You must be really high today. XD
I always watch his vids on 1.50 speed
Le_Hulk_ thats actually better than original
It sounds normal that way
1.25 is better
Thank you
1.75 if you grew up listening to Bone Thugs N Harmony so you can still understand it
I believe concrete is defined by a mix of cement, sand, and gravel or some larger rock aggregate with water mixed in as well. Cement and sand with water mixed in is just called mortar.
Great video, but I think the apparent brightness difference between the two samples, (that you note at about 10:00), is due more to uneven illumination. I note that the backing paper itself appears brighter, on the brighter sample. Just a small quibble. :-)
A tension test would be interesting to see. Something more accurate. It would be so cool to have access to equipment like that. Awesome videos man
6:41
I like how he calls the molecule "weird"
Interesting experiment. I work with concrete a lot, and I'd love to see you do more experiments with it.
Do you like make concrete or use it to build houses etc? Just wondering im a curious person.
@@dewaldsteyn1306 I work on large infrastructure jobs in TX. Concrete sampling/testing is part of my job
I was 60% sure that it would happen nothing!😮😊 You are the best!😊❤