Build This Roman Concrete Mix: Self-Heals Cracks and Gets STRONGER Over Time (3 Ingredients)

Comments · 305

• ME

  @MedievalWisdom · 1 month ago · pinned

  The Pantheon&apos;s concrete has lasted almost 1,900 years. MIT figured out why in 2023, and the buildable version is in the guide: <a href="https://medieval-wisdom.com/">https://medieval-wisdom.com</a><br><br>Which would you build first: concrete, waterproofing, or a foundation?

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• OT

  @othername1000 · 6 months ago

  All I need now is a volcano

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• CA

  @cathrynmartin4395 · 6 months ago

  Actually, my house in a very old suburb of Cincinnati, OH used limestone rocks to form the driveway. &nbsp;I have limestone rock steps from the driveway and the street-sidewalk up to my house. &nbsp;Built in 1920, those massive limestone rocks were unearthed during the construction of my house and used to create the driveway and steps as well as a couple of short walls around the front of the house. &nbsp;They have ancient creature&apos;s calcified remains embedded in them - mostly trilobytes, but I&apos;ve seen others that I can&apos;t name. &nbsp;Blessed or cursed with huge rocks during the building phase of the house, it certainly made my home unique to an era of &quot;make do with what you have!&quot;

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• LY

  @Lynnek8 · 5 months ago

  The Roman’s had the best concrete we need to get this commercialised again for options that builders can engineer with.

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• JA

  @JazzMoonFly · 6 months ago

  The concrete in the Coliseum in Rome has resisted time and earthquakes. It was poured almost dry and by hand.

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• OX

  @oxyd2013 · 4 months ago

  Louis Vicat, a french chemist and engineer, invented modern concrete in 1818 and published his research as a &quot;gift to humanity&quot;. <br>Later an englishman patented (stole) vicat&apos;s discovery in 1824.

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• RA

  @raymondpeters9186 · 5 months ago

  I&apos;ve been building pumicecrete homes for 30 years

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• FR

  @francescobellino6515 · 5 months ago

  In Puglia, Italy, an ancient technique was used to waterproof cisterns dug into Cretaceous limestone. The ingredients were hydrated lime and a volcanic ash from the eruption of the Fregrei fields in Naples. My grandfather told me that it had to be mixed vigorously and for a long time. It can still be found in old cisterns. Could this be of interest?

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• -H

  @-htl- · 6 months ago

  The first reason for failure is that Portland cement is used incorrectly. You see so many people making the standard mistakes. First, the pour must be at least 10 cm thick. Secondly, the reinforcement must be at least 5-10 cm away from each outer surface, 5 cm is in the middle and 5-10 cm from the outside! Never hammer a bar into the ground for reinforcement! When pouring it onto the ground, always pour it onto a plastic layer to prevent water from being sucked out, making it porous and weak. For example do not use 35 kg sack of cement/100Liter (aggregate and sand), but 8-9 kg; 40L of hard aggregate and 35L of sand. Always vibrate it. And most importantly, be economical with adding water. Wet concrete like in this video is much less durable. Water is space that needs to be filled when drying, so too much water makes it weaker and it delutes the clueing. It should be just wet, like mud. Do water it after a couple of hours when it is still wet however does no longer desolve the cement. My concrete is harder than most stone. That&apos;s also what you need to understand, the application. Concrete should only be used if the goal is to make it as hard as stone. It doesn&apos;t work with soft stone, and the soil must be well compacted.

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• MI

  @miguelalicea760 · 6 months ago

  Thanks for the information. I found it to be well researched but I have a constructive critique. You mention the three important materials but you don&apos;t mention any mixing proportions of the materials or the amount of water needed. I thing you are aware that the wrong mixing proportions would create a completely different result and simply assume that viewers already now that crucial information. It would be nice is you could provide some guidance in that regard. Thanks again! 😊

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• TI

  @timshort2601 · 3 months ago

  I want to try using this to pour some sidewalk slabs

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• RO

  @robertmiller5735 · 6 months ago

  The concrete interstate highway system built after ww2 , is still perfect . 70 years later we still drive on the bare concrete of I95 from Greenville SC to Atlanta GA . We can make it , we just refuse to .

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