The Mystery Of Roman Concrete Is Finally Solved #shorts

The mystery of roman concrete - solved. #history #facts #fact #short

[DR-oywc]

Meanwhile we can't fix potholes in 2023
We dumb down hard 🤡🌎

[emoji_page]

Now to make all future roads and buildings out of Roman concrete. You would never again need to replace a road or building.

[michaelsmyth]

It was cost of aggregate. I have 1920 concrete in better shape than 2000. Roman Concrete is far more expensive to make than the garbage we use today.

[lextube]

This video didn't mention on of the main ingredients of the historic Roman concrete 'they also used seawater which also made the concrete better!

[ladyofthemasque]

The "lime" in question is caustic lime, or limestone that has been baked at high temperatures until it changes composition (highly alkalinic at this point, hence "caustic, " and also it's fairly fragile as far as rock goes). This is the stage before it has been turned into slaked lime by "slaking its thirst" aka giving it water to form lime putty, which is used in mortar, cement, concrete, plaster, and whitewash.

Normally caustic lime cannot form cement-strong bonds, but by leaving some of the chunks intact, the outer surface slakes and becomes cement-like, but the inner surfaces remain caustic. So when a crack forms (the outer layer of slaked lime is weak without agglomerates such as sand and rocks in the mix), the water gets inside and hardens the rock. This can happen over and over again so long as some of the lime remains unslaked.

(Note: caustic lime is exothermic when exposed to water, aka it heats up. It has been known to set wood on fire, such as if a shipment gets wet in a rainstorm while traveling in a wooden wagon.)

[ahmadahadyar]

As an Engineer it amazes me and admire the Rome knowledge.

[petekobraoutdoors]

They also crushed the limestone into a powder form and added sand to use as a plaster base, just like today's hydrated finishing lime. Plaster of Paris and gold dust was added as a hardener along with the water soaked lime..
I am plasterer, have a great day 😊

[joagargo]

So that is why we see white, river like, lines on roman buildings.

[herbertollmann]

They used what resources they had in the best way possible.

[hemanthbt]

In southern India Lime is boiled with jaggery and quartz powder to create a gummy cement which is used to stick the corner tiles on a tile roofed house and also in building forts which are more than 1000 years old.

[TheOppiter]

the fact this took so long is really depressing...

[billytootill]

I live in SW Virginia in a coal town and the concrete poured here on my property was here for over 100 years and they must have understood this bc the tiny few cracks that have opened up are basically self healing so to speak. Im stone mason by trade going on 20 years so I fully understand what is to be expected from a good pour for a slab and we definitely don't produce anything near the quality of what I see here or surround areas the where poured for various coal and railroad projects.Nowadays our reenforced concrete psi wise can match so aspects of what was done way back but no of we matched don't use rebar and all.Limestone is basically everywhere here so was it a happy accident idk but maybe so ppl understood that be in these MTN hard telling bc hills folk are very private about everything.

[jamestracht]

Ant the Roman's use salt water instead of fresh water.

[anthonyboyd]

Limestone is the white rocks in a bag of cement. Crushed Limestone is used in dirt roads, house pads ect... Wet it down and roll it and when it dries the house pad is like cement

[kumarashokgak]

In India before the invention of cement, limestone was the main binding strengthening material used. Those walls are almost impenetrable by the canons.

[PrimalRage-omuz]

self healing concrete, this will put a lot of business out of service, so they didn't want the words to get around is the reason why it took so long

[alcohol]

They also used saltwater instead of freshwater in the mix.

[sophdog]

if the cracks mainly appear near the limestone inclusions, then they are likely also the weak point in the concrete, saved only by the water causing the cracks to heal. The lime is the problem AND the solution.

[Ghfvhvfg]

So now we need to adopt roman conrete for building material evreywehre

[EdDnB]

So it wasn’t stones and sand no…!?! Or clay or chalk, maybe a little lime… they’ve finally found the secret ingredient 😮