chaux vive

CONT: La chaux caustique est obtenue par calcination du carbonate de chaux naturel [...]
OBS: Le terme chaux comprend la chaux vive et la chaux éteinte [...]. La chaux vive ou chaux calcinée est l'oxyde de calcium (CaO). La chaux éteinte est essentiellement constituée d'hydroxyde de calcium (Ca(OH)[indice 2]) [...]

CONT: There is no evidence that facilities ever existed ... for the specific purpose of crushing burnt lime or even for slaking it. It would always have been shipped in bulk from the basin in its primary burnt state. In this condition it was also known as lump-lime or lime shells.
OBS: lime-shells: burnt lime before it is slaked [and crushed].