Oolitic limestone in a polluted atmospheric environment in Budapest: Weathering phenomena and alterations in physical properties

Research output: Article

46 Citations (Scopus)

Abstract

In Budapest damage due to atmospheric pollution on many public buildings is severe. Black encrustations, white crusts and other decay features of a soft oolitic limestone have been studied in detail by using field measurements and laboratory analyses. Limestone weathering was assessed by description of weathering forms, by on-site petrophysical tests (Duroscope, Schmidt hammer, water absorption) and by laboratory mineralogical assessment and thermoanalysis (X-ray diffraction, Derivatograph). There is a clear correlation between the organic carbon content in stone and location of the site, particularly in the polluted city centre. Gypsum, which is not an indigenous mineral in the limestone, can contribute up to 70% of the crust composition and indicates the importance of air-derived SO 2. This mineralogical change in stone composition leads to changes in physical properties, by strengthening laminar black crust and white case hardened crusts and weakening the host rock.

Original languageEnglish
Pages (from-to)363-379
Number of pages17
JournalGeological Society Special Publication
Volume205
DOIs
Publication statusPublished - dec. 1 2002

ASJC Scopus subject areas

  • Water Science and Technology
  • Ocean Engineering
  • Geology

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