Decay of sandstone in urban areas correlated with atmospheric aerosol |
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| Authors: | C Sabbioni G Zappia |
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| Institution: | 1. Ist. FISBAT-CNR, via Castagnoli 1, 40126, Bologna, Italy
2. Dipl. Scienze dei Materiali e della Terra, Università di Ancona, via Brecce Bianche, 60139, Ancona, Italy
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| Abstract: | The decay of sandstone in urban areas has been investigated. Patterns and composition of the damage layers sampled on monuments and historical buildings are described. The elemental concentrations of black surface crusts are reported. Enrichment factors in relation to the sandstone and crustal rock composition have been calculated in order to point out the component due to atmospheric deposition. The presence of anthropogenic aerosol and its role in the process of damage is evidenced. |
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