Improvements introduced in the obtaining of plaster of slow scrapping. (Machine-translation by Google Translate, not legally binding)

摘要

Improvements introduced in the production of slow-setting gypsum, essentially characterized by the contribution in adequate quantity and proportion, to a common gypsum, of a mixture of tartaric acid, ethyl-cellulose, dextrin and other components, being those not mentioned as normal use in construction, we managed to retard the setting process of the type of gypsum obtained, for a time several times greater than that of setting a common plaster. (Machine-translation by Google Translate, not legally binding)