Ahatmose Wrote:
-------------------------------------------------------
> A great article because I have always been
> fascinated with the fact that Roman concrete gets
> STRONGER as it ages and will set perfectly and
> grow stronger UNDER WATER !
>
> But there was one thing I was looking for that was
> glaringly missing from the article.
>
> How did they discover this secret formula ?

There's a brief discussion on pg 8 here - [www.science.org].

Hermione
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