摘要
The industry,which developed into an endless source of new formulations and technologies,supported the typological innovation that took place in the architectural field in the first half of the 20th century.The world of plaster was revolutionised by the introduction of ready-mixed mortars that only required the addition of water.The plaster was no longer created on site,and the workers only dealt with the application.In Italy,the so-called“special plasters”based on cement and/or lime with the addition of various substances,the formulations of which were kept secret by the manufacturing companies,appeared in the period after the World War I.Despite being widely spread,their composition is still little known today.Samples of Terranova plaster,characterized by high durability,were investigated in this study to understand their main characteristics.The analysed samples appear to be based on dolomitic lime with characteristic iridescent aggregates and high porosity,probably due to air-entraining agents and pigments based on oxides of different nature.The aim of this paper is to compare three samples of Terranova plaster from the Emilia-Romagna region with the literature.
