Your concrete did not have the correct proportions of aggregate to make strong concrete, that's why it crumbled so easily. There is a lot of science that goes into the proportioning of the elements that go into concrete, change the amount of one of the materials and it can have a significant affect on the strength. In addition if you are trying to add reinforcing to strengthen concrete you have to consider what strength you are trying to reinforce for, and the reinforcing configuration not only has to match that but it has to be able to transfer loads from the concrete to the steel. The reinforcing layout in the video is incorrect for reinforcing against compression, and you would have to use much smaller types of reinforcing in order to be able to transfer loads from concrete to reinforcing.
Watching this video "reinforced" certain knowledge I had when I studied mechanical engineering. They're fine generic demonstrations for what you're talking about. But now I'm yearning for an in depth video(s) of how engineering concrete is done, and would love to see videos of such things with proper hydraulic press demos that explain "you see, this is why we don't expect bricks to hold things in tension. or see the real difference between using aggregate with rough surface vs smooth or porous vs non." (not sure if those differences actually matter much vs size and shape, just pulled some properties out of my head).
It is unsatisfying on so many levels for a civil engineer like me to watch all the blunders made. First of all concrete being mixed wrongly, later no curing provided to the concrete, and reinforced concrete beam subjected to compressive load, whereas we generally test it for flexure.
Roman concrete vs modern concrete would be interesting. The roman concrete uses ash from volcanos so not the easiest to source, and uses much less water. Obviously modern reinforced concrete is much stronger, but for the concrete itself it's still interesting - especially if we want to avoid the reinforced part to avoid rusting and maintenance. Roman concrete will last thousands of years while reinforced concrete will eventually fall apart as it rusts from the inside out.
Modern concrete uses various types of ash to supplement the bond of cement as well as other chemicals, there is a lot more that goes into concrete besides cement, water and rock. Modern concrete mixes have been made approaching the compressive strength of steel. To the average person concrete is what they see in a sidewalk but sidewalks are the bare minimum that will become gray and hard, the concrete used in buildings where significant strength is required is very hard stuff. Hit a sidewalk with a hammer and big chunks break off, hit a piece of structural concrete with a hammer and the hammer bounces off, maybe without even leaving a mark on the concrete. This stuff may be at least 5 times the strength of a common sidewalk.
The alkalinity of wet concrete passivates the rebar. So unless there is a harsh salt environment the rebar won't rust. There is a lot more to concrete than you think.
In this case the concrete may have more resistance depending of the proportions on ingredients. And results would be more efficient with a cilinder with the same area of hydraulic press
It would be good if some on here went and watched one or two of the Wise Up videos and gave their views. What was blocks hewn from rocks and what was concrete?
Try a block of ice, and one of the same dimension but with for example cotton inside. It is like with the concrete, the strain main direction is broken by the additives.
You are comparing apples to oranges. The "concrete" mix was apparently not standardized for all three samples. One mix had gravel, while the second mix lacked gravel. The cube also had no gravel. The ratio as well as the water content was not given and may have varied. How was the curing done? The reinforced vs unreinforced samples should have been tested as beams, for example with two supports at the bottom and one load in the center. A sand and cement mix is not concrete, but mortar which is much weaker. Your cube only had about 860 psi of compressive strength. The antique concrete cube performed comparatively well with about 2500 psi, which you could have reached easily with modern concrete after 28 days.
I have yet to see any reinforced house foundation fail. If it settles deeply, I'm convinced you could just jack it up from a corner and fill in with gravel
I would like to see an iron pipe or steel pipe filled with concrete. I think it will be the hardest thing to press. Will it? Reason is that the metal pipe will hold the concrete and the only way to crush it is such force to make the concrete inside to tear the metal. OBS, the cement at 5:00 is not a concrete and it starts to at 2.6tons about it despite it got up to 6 tons, i guess if it was in a build that first tear would already be the doom. Would be really nice to see, the tests for cement, normal concrete, concrete with mixed sizes of rocks, and of course each mix before now with some frame in it. That would cover the most common combination and get how strong are each. Really would love to see such experiment.
To have credibity in your results you should have an horizontal face . In your case , the shape of the dry concrete isn't the best because in the first experimentation the force apply on the paving concrete induces shear forces ... and they are lot of mistakes in dimension and how you apply forces . You have to speak about the other test like "cône d'abram" and " air occlue" and the different type of normes
Só pra avisar, o "concreto" sem brita não é concreto é massa forte, e o concreto com brita e ferro é só concreto não é necessariamente concreto reforçado.
It's hard to compare all the scenes. Instead of giving the force acting on the entire foot (and you use different foot sizes), you should standardize the results, e.g. 100 kg/cm2 or 1000 T/m2.
All concrete gets harder over time. But that doesn't matter very much. It gets the 90% of the hardness within 28 days. The other 10% is the over time part.
Mind you, concrete has terrible lateral strength. And by itself, decent compressive strength but not like graphene carbon fiber, or nanotubes for that matter. It’s just expensive
That's unscientific ~ you can't just create concrete using a random amount of cement and water. try testing the old concrete to know it's strength then to recreate it using the correct components ratios of modern concrete that would by interesting. or you can test the concrete from a different concrete factory to know which one is better.
Leider ist dieser Test überhaupt nicht aussagekräftig. Die selbstgefertigten Betonwürfel weisen einen viel zu hohen Sandanteil vor und wurden aus ungeeigneten Material angemischt.
This is the kind of world 🌎 we've made for ourselves and our children, better have no enemies when the light goes out , due to the economic criss, wars and rate of unemployment I think now is the best time to invest and make more money for the future💯.
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Your concrete did not have the correct proportions of aggregate to make strong concrete, that's why it crumbled so easily. There is a lot of science that goes into the proportioning of the elements that go into concrete, change the amount of one of the materials and it can have a significant affect on the strength. In addition if you are trying to add reinforcing to strengthen concrete you have to consider what strength you are trying to reinforce for, and the reinforcing configuration not only has to match that but it has to be able to transfer loads from the concrete to the steel. The reinforcing layout in the video is incorrect for reinforcing against compression, and you would have to use much smaller types of reinforcing in order to be able to transfer loads from concrete to reinforcing.
Couldn't say it better myself my dude
Watching this video "reinforced" certain knowledge I had when I studied mechanical engineering. They're fine generic demonstrations for what you're talking about. But now I'm yearning for an in depth video(s) of how engineering concrete is done, and would love to see videos of such things with proper hydraulic press demos that explain "you see, this is why we don't expect bricks to hold things in tension. or see the real difference between using aggregate with rough surface vs smooth or porous vs non." (not sure if those differences actually matter much vs size and shape, just pulled some properties out of my head).
You got it Engr.
Would it help to let the concrete "rest" for longer periods? And how long to get max resistence?
@@BZAKether yes, and you have to water it too to increase the strength
My job this morning is to break apart and remove a reinforced concrete patio. After watching this video, you can imagine why I am not excited :D
🙈
And how did it go? 🙂
Pick axe. Definitely pick axe.
Try drill a hole and pour vinegar on, let it sit for a night.
I think this is the first hydraulic press video I've seen where the forces being applied are actually relevant to what the material is designed for
Actually it's not, those rebars are not designed for those forces
Reinforcement steel are for tensile forces of the structural members like beamss
It is unsatisfying on so many levels for a civil engineer like me to watch all the blunders made. First of all concrete being mixed wrongly, later no curing provided to the concrete, and reinforced concrete beam subjected to compressive load, whereas we generally test it for flexure.
Concrete and reinforced concrete are stronger than what is shown in the vid
Roman concrete vs modern concrete would be interesting. The roman concrete uses ash from volcanos so not the easiest to source, and uses much less water. Obviously modern reinforced concrete is much stronger, but for the concrete itself it's still interesting - especially if we want to avoid the reinforced part to avoid rusting and maintenance. Roman concrete will last thousands of years while reinforced concrete will eventually fall apart as it rusts from the inside out.
Modern concrete uses various types of ash to supplement the bond of cement as well as other chemicals, there is a lot more that goes into concrete besides cement, water and rock. Modern concrete mixes have been made approaching the compressive strength of steel. To the average person concrete is what they see in a sidewalk but sidewalks are the bare minimum that will become gray and hard, the concrete used in buildings where significant strength is required is very hard stuff. Hit a sidewalk with a hammer and big chunks break off, hit a piece of structural concrete with a hammer and the hammer bounces off, maybe without even leaving a mark on the concrete. This stuff may be at least 5 times the strength of a common sidewalk.
Nah, just use rebars galvanized with a sacrifice metal (like zinc or something like it)
The alkalinity of wet concrete passivates the rebar. So unless there is a harsh salt environment the rebar won't rust. There is a lot more to concrete than you think.
But how long did you let the concrete set & dry for??.
Be interesting to see various types of micro rebar like Helix 525 or fiber reinforcement tested this way.
Thank U very much for this experience.
@Crazy Hidraulic Press
Another good video; thank you
Muito bom seu conteúdo!!
I feel for this man cleaning after every video he makes
6:21 that part took me by surprise
Very good experiment bro!
Im interested to see the boundaries material strength of buildings tested to the limit 💪
I'd like to see a test on the concrete used for prison cells. It's more dense then everyday concrete.
Why would you want that ? Thinking of how easy your escape is gonna be??
@@letsgameawayourproblems4370
Nope. Just curious
@@letsgameawayourproblems4370 How many prisoners hide a 100 ton Hydraulic press in their cells?
Impressive what steel reinforcing does
“Don’t repeat at home”??
So, we should NOT use our hydraulic press to do this? I guess I’ll use my hydraulic press for other purposes then 😳🤷🏽♂️
Exactly, and like we all have a 100 ton hydraulic press anyway 🤔😆
really cool
In this case the concrete may have more resistance depending of the proportions on ingredients. And results would be more efficient with a cilinder with the same area of hydraulic press
How about doing that with the fiberglass rod ?
good job
I appreciate the fact
wow👍🏼We used beer cans for filler back in the 70's.
It would be good if some on here went and watched one or two of the Wise Up videos and gave their views. What was blocks hewn from rocks and what was concrete?
Make different layered carbon fiber and foam structures and then crush them please. Maybe 5 inch square each with different thicknesses etc.
Wow!!
Try a block of ice, and one of the same dimension but with for example cotton inside. It is like with the concrete, the strain main direction is broken by the additives.
Very interesting video! A block taken from the great wall of China vs Egyptian pyramid would be a good one 🤔👍
2 rocks
Just buy some granite for the Egyptian specimen
I get 90 newtons plus from a limestone mix. I’d like to see you crush one of my cubes
You are comparing apples to oranges. The "concrete" mix was apparently not standardized for all three samples. One mix had gravel, while the second mix lacked gravel. The cube also had no gravel. The ratio as well as the water content was not given and may have varied. How was the curing done?
The reinforced vs unreinforced samples should have been tested as beams, for example with two supports at the bottom and one load in the center.
A sand and cement mix is not concrete, but mortar which is much weaker. Your cube only had about 860 psi of compressive strength. The antique concrete cube performed comparatively well with about 2500 psi, which you could have reached easily with modern concrete after 28 days.
question about the "iron" @0:45 . Which grade of iron is this? There is more than one. Some of them are quite different from others.
First of all it’s steel not iron. Second, it doesn’t matter, the concrete failed not the steel.
I seem to remember rebar needs 50mm covering / as well as correct ratios of aggregates?
I wonder how composite concrete will hold up, test of GFRC should be interesting
That's not concrete. It mortar. Proper concrete is mixed with stones.
He should have wrote Mortar vs improperly reinforced concrete. His reinforced concrete did have stone. But yeah so many things wrong with this.
Salut ce dimensiuni au?
You need to test this with glass fiber reinforced concrete (short fibers at whole volume)
Do fibermesh please. Also, mix it properly.
I have yet to see any reinforced house foundation fail. If it settles deeply, I'm convinced you could just jack it up from a corner and fill in with gravel
there were a lot of wrong conditions in these tests especially in the reinforced one.
anyway thanks to the Civil engineers 🌹❤️
We all just appreciate the content this man and his crew makes its just a masterpiece imagine what's he's gonna doing the future 💛....
Same thing I guess?
All the guy did was buy a hydraulic press and film it breaking stuff
How is it a "masterpiece?"
it was very fresh
I would like to see an iron pipe or steel pipe filled with concrete. I think it will be the hardest thing to press. Will it? Reason is that the metal pipe will hold the concrete and the only way to crush it is such force to make the concrete inside to tear the metal.
OBS, the cement at 5:00 is not a concrete and it starts to at 2.6tons about it despite it got up to 6 tons, i guess if it was in a build that first tear would already be the doom.
Would be really nice to see, the tests for cement, normal concrete, concrete with mixed sizes of rocks, and of course each mix before now with some frame in it. That would cover the most common combination and get how strong are each. Really would love to see such experiment.
Wow, it actually failed because of punching shear. Obviously, this specimen had a lot of mistakes but it was pretty cool though.
Do fiber reinforced concrete too
I suggest to make the test with concrete reinforced with carbon-fiber, glass-fiber, scrap of steel, etc.
To have credibity in your results you should have an horizontal face . In your case , the shape of the dry concrete isn't the best because in the first experimentation the force apply on the paving concrete induces shear forces ... and they are lot of mistakes in dimension and how you apply forces . You have to speak about the other test like "cône d'abram" and " air occlue" and the different type of normes
Só pra avisar, o "concreto" sem brita não é concreto é massa forte, e o concreto com brita e ferro é só concreto não é necessariamente concreto reforçado.
You should have made one in the shape of a heart.
1 st like
Suggestion to everyone - If you gonna do compressive test on concrete ,you should consult with a fucking Civil Engineer.
Should have added fiberglass to the reinforced concrete
I wonder... What would happen if you found a way to replicate the recipe of the fortress concrete and reinforced it.
I don't think it's about the recipe
I think it is time that's strengten the concrete, I believe I've heard that concrete gets stronger with time.
Loving all the crpto/nft spambots here
It's hard to compare all the scenes. Instead of giving the force acting on the entire foot (and you use different foot sizes), you should standardize the results, e.g. 100 kg/cm2 or 1000 T/m2.
Who coulda guessed that reinforced anything would be stronger than not?
Rectangular specimens should be tested for bending,not compression
Antique concrete is so strong as it contains volcanic ash so it will become stronger and stronger over time
All concrete gets harder over time. But that doesn't matter very much. It gets the 90% of the hardness within 28 days. The other 10% is the over time part.
Exactly...
Когда видосы на русскоязычном будут ?
Это видео дубяж с русского. Оно есть на его русскоязычном канале
@@user-pz8rb5od7e ну так надо делать новые видосы
Check 6:25 there is golden coin..
Let that concrete alone, you bully!
Don't try this at home
I'm dirt poor, I don't have the cash to even buy concrete
Mind you, concrete has terrible lateral strength. And by itself, decent compressive strength but not like graphene carbon fiber, or nanotubes for that matter.
It’s just expensive
Why does the "headlines" say "20 ton" when the gauge says "5 tons"?
and the other headlines says"100 tons and the gauge says 22 tons" ??
No creo mucha gente tenga una prensa en su patio trasero, es más muchísima gente ni patio trasero tiene
nope.... you couldn't make modern concrete right....
Your concrete needs inmersion water
That's unscientific ~ you can't just create concrete using a random amount of cement and water.
try testing the old concrete to know it's strength then to recreate it using the correct components ratios of modern concrete that would by interesting.
or you can test the concrete from a different concrete factory to know which one is better.
Russian Chanel
#kicaki #cie #znajda
Leider ist dieser Test überhaupt nicht aussagekräftig. Die selbstgefertigten Betonwürfel weisen einen viel zu hohen Sandanteil vor und wurden aus ungeeigneten Material angemischt.
This is the kind of world 🌎 we've made for ourselves and our children, better have no enemies when the light goes out , due to the economic criss, wars and rate of unemployment I think now is the best time to invest and make more money for the future💯.
I stumbled upon one of he's clients testimonies and decided to try him out, Im expecting my 3rd cash out in 9days
I think trading is easier with proper guidance, especially from a proffessional it really helps reduce the chances of running into losses. All thanks to Mr Frederick Reid He changed my life, I was able to pay off my mortgage
Wow! I invest and buy cryptocurrencies but Mostly waiting for the rise to sell. This is a great opportunity to start trading my investments to start earning right away.
I'm placing my trade with Mr Frederick Asap
I heard about him here in Amsterdam too, And I decided to trade with him and I made a lot of profits
Dude that is NOT the way to make concrete
reinforced concrete is WAY stronger than that,you did not have the correct proportions of aggregate my guy
This is not correct... Hydraulic press on concrete after 28 days curing... Then well see how strong concrete is
Hey stated that it was many months later after pouring. But everything else about the concrete is incorrect.
You don't know what you're doing