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Why Was Roman Concrete More Eco Friendly 2000 Years Ago? Photo © Adobe Stock (under license)
We found a fascinating article with some good news about recent research into ancient Roman concrete.
Modern concrete is considered to be one of the biggest contributors to environmental damage – due to the large amount of Carbon Dioxide released in its production. An analysis of the ingredients of Roman concrete has led scientists to understand how it could be used as an environment-saving alternative.
Well, the Roman technology is proven to last when it comes to concrete – because some of it is still around today! The awe-inspiring dome of the Pantheon is one of the best examples of its creative use; it is the largest unreinforced concrete dome in the world! Isn’t that astonishing? If you want to see it there are some good pictures in the gallery here: http://en.wikipedia.org/wiki/Pantheon,_Rome
The secret to the recipe for concrete that can stand for millennia, and even set underwater, is the addition of volcanic ash (Pozzolan) to the mix; this has the effect of creating crystals within the concrete as it sets, giving it great strength. Pozzolan is sometimes used in a mix for lime mortar, which is often found in older buildings across Europe and has been known to last for hundreds of years. Lime mortar is sometimes preferred over modern sand / cement mortar – especially with softer types of building stone; because it can actually move with a building – this is down to it’s amazing property to “heal” itself – if it is cracked, the lime mortar will react with the air and gradually expand to fill the crack!
Apart from the readily available sand, volcanic ash and seawater, all that is needed is some hydrated lime, which is made by heating limestone to 900 degrees Celsius. So it may be that the Romans discovered their concrete after a volcanic eruption; because all of the ingredients are right there – along with the fire.
Let’s hope that we can learn from these rediscovered secrets of the past and take steps towards a more natural way of doing things. If human beings insist on making so much concrete, we would do well to make use of the Roman technology… but we’ll have to do our best to make structures that are pleasing to the eye, as they could be around for a very long time!
Here’s the link to the full tutorial: http://www.treehugger.com/green-architecture/roman-concrete-was-lot-greener-stuff-we-make-today.html
There’s also a short video clip showing how to make concrete the way the Romans did – it’s child’s play so make sure you have your bucket and spade at the ready!
This Crazy Off Grid Device Literally Makes Drinkable Water From Fresh Air:
According to NASA, the U.S. is expecting a 100-YEAR LONG MEGADROUGHT.
It's already begun. Ask the farmers in California. They know.
Every survivalist knows that water is of critical importance. You NEED an independent water source that you can count on!
As an interesting "survival rehearsal" - imagine that you turned the tap on right now and nothing came out. How long would you last?
But what if there was another water source literally hidden in plain sight. That's right, I'm talking about the atmosphere!
The amazing thing about getting water from the natural moisture in the air... is that it is ALWAYS available.
This gives you real water security!
Learn more about how to tap into "Nature's secret water reservoir" and stay hydrated when TSHTF!
Watch the video:
Most People Don't Have The Guts To Try This:
An amazing discovery in an abandoned house in Austin, Texas: A lost book of amazing survival knowledge, believed to have been long vanished to history, has been found in a dusty drawer in the house which belonged to a guy named Claude Davis.
Remember... back in those days, there was no electricity... no refrigerators... no law enforcement... and certainly no grocery store or supermarkets... Some of these exceptional skills are hundreds of years of old and they were learned the hard way by the early pioneers.
We've lost to history so much survival knowledge that we've become clueless compared to what our great grandfathers did or built on a daily basis to sustain their families.
Neighbors said that for the last couple of years Claude has tried to unearth and learn the forgotten ways of our great-grandparents and claimed to have found a secret of gargantuan proportions. A secret that he is about to reveal together with 3 old teachings that will change everything you think you know about preparedness:
What REALLY Happens When You Bury a Shipping Container? (Hint: It's A Bit Crazy...)
Shipping containers are all the rage - but if you are thinking about buying one, you MUST watch this video first:
Do not, I repeat do NOT do what these lunatics did! Can you spot the "fatal mistake" they made?
There's a general belief that if you bury a shipping container you can create an awesome root cellar / storm shelter / survival bunker.
But is a shipping container strong enough to handle the pressure?
Watch the video to see what happens:
I Can't Help Showing This Off:
If you haven't heard of Claude Davis yet do yourself a huge favor and watch this video.
One of the smartest guys I ever had the pleasure of meeting, Claude set-up a unique prepping system that changed his life forever.
I already tried it myself and let me tell... you I was completely blown away... His surprising tactics could make your life easier and give you the peace of mind you deserve.
Don't just take my word for it... watch his short video and decide for yourself.
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