Béton brut
Raw (unfinished) concrete / From Wikipedia, the free encyclopedia
Béton brut (French pronunciation: [betɔ̃ bʁyt]) is architectural concrete that is left unfinished after being cast, displaying the patterns and seams imprinted on it by the formwork.[1] Béton brut is not a material itself, but rather a way of using concrete. The term comes from French and means "raw concrete".