Modelling the rapid retreat of building sandstones: A case study from a polluted maritime environment

B. J. Smith, A. V. Turkington, P. A. Warke, P. A.M. Basheer, J. J. McAlister, J. Meneely, J. M. Curran

Research output: Contribution to journalArticlepeer-review

44 Scopus citations

Abstract

Sandstones are widely used as building stones throughout NW Europe. Unlike limestone, sandstones tend to experience episodic and sometimes rapid surface retreat associated with the action of salts and often leading to the development of hollows/caverns in the stone. The unpredictability of these decay dynamics can present significant problems when planning conservation strategies. Consequently, successful conservation requires a better understanding of the factors that trigger decay and determine the subsequent decay pathway. An overview of results from previous studies provided the basis for simulation experiments aimed at identifying the factors that (a) initiate decay and (b) permit the continuance of salt weathering despite rapid loss of surface material. These simulation studies involve investigation of changes in micro-environmental conditions as surface hollows develop and examination of salt weathering dynamics within such hollows. These data combined with knowledge gained from previous work have allowed the refinement of a conceptual model of rapid sandstone retreat. In this model decay is linked to the establishment of positive feedback conditions through interactions between factors such as porosity, permeability, mineralogy and their effect on salt penetration.

Original languageEnglish
Pages (from-to)347-362
Number of pages16
JournalGeological Society Special Publication
Volume205
DOIs
StatePublished - 2002

ASJC Scopus subject areas

  • Water Science and Technology
  • Ocean Engineering
  • Geology

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