 These ground discards were mixed with lime to create marmorino.Besides, marmorino and substrates made of "coccio pesto" resisted the ambient dampness of the lagoon better than almost any other plaster.The first because it is extremely breathable by virtue of the kind of lime used (only lime which sets on exposure to air after losing excess water) and the second, because it contains terracotta which when added to lime makes the mixture hydraulic, that is, it's effective even in very damp conditions (because it contains silica and aluminium, bases of modern cement and Hydraulic lime preparations).