High resolution monitoring of surface morphological change of building limestones in response to simulated salt weathering

Bernard Smith, Miguel Gomez-Heras, John Meneely, Heather Viles

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Abstract

    A salt weathering simulation using a mix of sodium chloride (5%) and magnesium sulphate (5%) in a salt corrosion cabinet and five granular limestones is described. Progressive surface loss from vertical exposed faces was mapped using a high resolution (sub-millimetre) object scanner (Konica Minolta Vi9i). Patterns of loss are related to surface porosity/permeability measurements obtained using a hand-held gas permeameter. Introduction of this spatial dimension into damage assessment is seen as essential for understanding the initial conditions that allow surface loss to be triggered, and changes in surface characteristics as weathering proceeds which dictate subsequent decay in space and time. Preliminary observations suggest that scanning at this high resolution is particularly valuable in quantifying very subtle trends and distortions that are pre-cursors to material loss, including surface swelling and pore filling.
    Original languageEnglish
    Title of host publicationProceedings of the 11th International Congress on Deterioration and Conservation of Stone
    Pages275
    Number of pages8
    Publication statusPublished - 2008

    Fingerprint Dive into the research topics of 'High resolution monitoring of surface morphological change of building limestones in response to simulated salt weathering'. Together they form a unique fingerprint.

  • Cite this

    Smith, B., Gomez-Heras, M., Meneely, J., & Viles, H. (2008). High resolution monitoring of surface morphological change of building limestones in response to simulated salt weathering. In Proceedings of the 11th International Congress on Deterioration and Conservation of Stone (pp. 275)