Oyster shells; building eco-material?

[gentil33]

the utopia of today is the reality of tomorrow !!
This is a beautiful philosophical phrase like I have not seen in a long time, thank you for your comments.
Of course, this poses many problems, it was to be expected, but I think that the idea deserves to be explored.

[gegyx]

You can also help nature by making "natural" stone ...

Nice!

It was Science & Vie / Dec 2006 which wrote that “the false stone pyramid” was confirmed.

Natron salt and ashes (rich in calcium oxide) immersed in water, forming caustic soda.
Clay limestone is mixed with soda. "Cooked" gypsum hardens the mixture.
Soda and clay form crystals which cement the limestone grains, forming a paste.
Salts are added to lower the PH.
This paste is packed in forms and solidifies definitively.

[dedeleco]

Very questionable and discussed !!
http://www.dinosoria.com/kheops.htm

http://www.google.fr/search?client=fire ... =&aql=&oq=



I remember that Science et vie around 1995 had excess energy in the water injected under pressure in zeolite, and I was checked on site, on the machine and I found that the energy was conserved.

So Sciences et Vie presents little proven subjects like on the internet !!

[gegyx]

Yes Yes Yes.
(and we suspect the openness of the clan of Egyptologists ...)

If I spoke on this point there (anyway) of this review that I have, it is because it seems true.
With photos of strata in the "cast", stones with odd angles ...
A characteristic of limestone with a lot of salt ...

And I'm not talking about the inclusions of hair or beer bottles ...


Experience made at the Palais de la Découverte fire:
http://www.geopolymer.org/fr/archeologi ... -la-pierre

[dedeleco]

Very interesting, but we are shocked that the Egyptians almost 4000 years ago were able to fool our knowledge and very deep means of chemistry by making stones much more solid over 4000 years than our concrete which barely holds 100 years !!

We want to check for yourself too!

[gegyx]

Why "fool"?

Currently there is a nomenclature of certified censor scientists, concerned with their prerogatives which tug on everything that can make them descend from their certainties.

[highfly-addict]

ok, but I ask which organism cultivated in aquaculture would make enough limestone to produce cement?

Not cultivated nor high but available in quantity: the crepidule.

http://www.futura-sciences.com/fr/doc/t/zoologie-1/d/_1093/c3/221/p7/

[dedeleco]

Very good these remarks !!

I didn't think about it:
The invasive crepidule is also to be eliminated !!
Make its elimination profitable ?????