Analysis of limestones from heritage buildings as damage diagnostics

摘要

The paper presents the mineralogical-petrographical analysis of twolimestone samples collected from Piarists Church of Cluj-Napoca city, in order toidentify the causes of their decay. The samples have been analysed in thin sections,using the Alizarin Red S pigment, the X-ray diffraction patterns, and binary imageanalysis method. The results show that limestone samples have differentmineralogical composition, rates of solubility and porosity which justify theirdifferent behaviour in time for similar environmental conditions.