Improvements in the manufacturing procedure of plaster bovedillas for construction of buildings (Machine-translation by Google Translate, not legally binding)

摘要

Improvements in the process of manufacture of gypsum vaults, for the construction of buildings, consisting of the preparation of a dry mixture composed of fine sifted sand and dry-bonded cement and conveniently removed until their complete homogenization, intervening the indicated materials in the proportions approximately 20% cement, and 80% fine sand. (Machine-translation by Google Translate, not legally binding)