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Mechanism of gypsum hydration
There is an hypothesis that the mechanism o f gypsum hydration and dehydration is performed through two simultaneous phenomena. In this study we try to clear up this phenomenon using chlorides as accelerators or a mixture of ethanol-methanol as retarders to carry out the gypsum setting. Natural Mexican gypsum samples…
Noticias
Petrografía, propiedades físicas y durabilidad de rocas utilizadas en el patrimonio monumental de Cataluña, España (2.ª parte)
The petrographical description and the values of some physical properties of three rocks used in the Architectonic Heritage of Catalonia (Spain) are presented. These rocks are known, in the field of the "building stones" as Sant Vicenç, El Figueró and Manresa stones. By means of accelerated ageing tests, their durabil…
Macroscópical morphology of deterioration of the stone in the Cathedral of Almería/Spain
The prevailing winds in the area, associated with an important rising damp are the main natural factors of deterioration that affect the Cathedral of Almería. Certain unfortunate maintenance Jobs carried out as well as the bombardments and machine-gunning on the building during the Civil War can be indicated as anthro…