Skip to content. | Skip to navigation

Personal tools

You are here: Home / Library / RBINS Staff Publications / Damage assessment of ferruginous sandstone by X-ray tomografie - the "Virgin Tower" of Zichem (Belgium)

Hilde De Clercq, Roald Hayen, Veerle Cnudde, Matthieu Boone and Michiel Dusar (2014)

Damage assessment of ferruginous sandstone by X-ray tomografie - the "Virgin Tower" of Zichem (Belgium)

In: Proceedings of 12th International Congress on the Deterioration and Conservation of Stone.

The ferruginous sandstone of the Gothic “Virgin Tower” is suffering from a specific biological deterioration process triggered by perforating activities of mason bees. The damage due to these perforations causes extensive loss of material, so that a durable conservation of such degraded stoneblocks becomes questionable. In order to evaluate the conservation possibilities of stoneblocks damaged by perforating mason bees, an investigation of the internal structure by means of X-ray tomography was carried out. This investigation revealed that the cumulative effect of the digging work by multiple generations of mason bees may result in networks of perforations. Bioturbated sandstones were found to be most suitable for attack by mason bees because of morphological and geometrical compatibility between the original layered burrowings by marine organisms and those by the mason bees. As a conclusion, the conservation is not recommended of sandstoneblocks for which the load bearing capacity is endangered by the branched and layered perforations
Abstract of an Oral Presentation or a Poster

Document Actions

Menu

 
RBINS Staff
add or import reference(s)
  • add a PDF paper
    (Please follow editors copyrights policies)
  • add a PDF poster