40 Imagine sitting around a board room and someone proposes " Hey, let's put human blood in our concrete ". (patents.google.com) posted 3 years ago by PaintingTruth17 3 years ago by PaintingTruth17 +40 / -0 17 comments share 17 comments share save hide report block hide replies
The Romans did this, putting blood in their concrete. Look it up. Fascinating stuff.
Ox blood, some Austin company made some and it tested out as amazing