Caracterización petrofísica de la caliza de Piedramuelle (Oviedo, Asturias).

Piedramuelle limestone, one of the rocks more widely used in the architectural heritage of Oviedo (Asturias, Spain), is studied from the petrophysical point of view. Two rock types, with different decay behaviour: “coarse grain” and “fine grain” types, can be distinguished according its granulometry. Some petrographical characteristics and physical properties, are analysed and results correlated to their weatherability as a building stones. The worst behaviour of the fine grain type is attributed to its greater phyllosilicates content and finest pore size, characteristics which increase humidity retention when drying.