New studies of ancient concrete could teach us to do as the Romans did

ROMACONS drilling at a marine structure in Portus Cosanus, Tuscany, 2003. Drilling is by permission of the

Soprintendenza Archeologia per la Toscana [Credit: J.P. Oleson]

This microscopic image shows the lumpy calcium-aluminum-silicate-hydrate (C-A-S-H) binder material that forms

when volcanic ash, lime, and seawater mix. Platy crystals of Al-tobermorite have grown amongst

the C-A-S-H cementing matrix [Credit: Marie Jackson]

TANN

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