river or sea-sand
Isaac Kremer/ November 23, 2025/ / 0 comments
mix two parts of sand with one of lime. These will be the right proportions for the composition of the mixture. Further, in using river or sea-sand, the addition of a third part composed of burnt brick, pounded up and sifted, will make your mortar of a better composition to use. (Vitruvius, 15BCE)