Scientists finally uncover the mystery of how ancient Roman concrete survived thousands of years of battering by the sea
http://www.telegraph.co.uk/science/2017/07/03/secret-roman-concrete-survived-tidal-battering-2000-years-revealed/

Submitted July 03, 2017 at 08:53PM by MahatmaGuru
via reddit https://www.reddit.com/r/science/comments/6l465w/scientists_finally_uncover_the_mystery_of_how/?utm_source=ifttt

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