Protective patinas applied on stony façades of historical buildings in the past
Source abstract
Abstract
Abstract The ochre patina that covers the limestone facades of Palacio de Nuevo Baztan is composed of calcite, clay minerals, gypsum, quartz, potassium feldspar, alongside traces of calcium oxalates, calcium phosphates, iron oxides and hydroxides. It is a polistratified film, rich in Ca, Si, Al and P, as well as Mg, K, Fe and Cl. Results obtained indicate that the origin of the patina lies in a treatment applied on the stone in the past, consisting of a mixture of lime, gypsum, milk-derived compounds and inorganic earth pigments. This film has protected the stone on which it was applied, and should be preserved in any further stages of intervention on the stone facades.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Building materials and conservation · Medieval Architecture and Archaeology · Historical Studies of Medieval Iberia
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References (28)
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