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The last post is the WINNER!

Revoltingest

Pragmatic Libertarian
Premium Member
This-little-piggy.jpg
 

Revoltingest

Pragmatic Libertarian
Premium Member

Wu Wei

ursus senum severiorum and ex-Bisy Backson
Except that the Roman's had a secret recipe that we're just now rediscovering. So the picture is incomplete
Vitruvius specifies a ratio of 1 part lime to 3 parts pozzolana for mortar used in buildings and a 1:2 ratio for underwater work. The Romans first used hydraulic concrete in coastal underwater structures, probably in the harbours around Baiae before the end of the 2nd century BC

But the side of my head and my ribs can tell you modern concrete is pretty darn hard
 

sun rise

The world is on fire
Premium Member
Vitruvius specifies a ratio of 1 part lime to 3 parts pozzolana for mortar used in buildings and a 1:2 ratio for underwater work. The Romans first used hydraulic concrete in coastal underwater structures, probably in the harbours around Baiae before the end of the 2nd century BC

But the side of my head and my ribs can tell you modern concrete is pretty darn hard
I don't know how to translate italian into English concrete terms but Riddle solved: Why was Roman concrete so durable? is what I was thinking of.
 
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