E-Publication DOI

Quantitative Salt Analysis in Conservation of Buildings

Bläuer-Böhm, Christine

Jahr: 2005

Datei zum Herunterladen: PDF (10 pages, 380 KB)

Beschreibung:
For the conservation of monuments, quantitative analyses of salts in the original materials help to predict
their destructive behaviour and to estimate the least harmful environmental conditions for preventive conservation
of the object in question. Salt analyses can also be used to monitor the results of salt reduction treatments
or to compare diverse methods of conservation treatment. Further it can be necessary to test new
building or conservation materials for their soluble salt content and hence their suitability for use in historical
monuments. The analytical procedure consists of three steps: sampling, actual analysis and interpretation
of data. It will be more or less complicated depending on the materials considered and needs to be adapted to
the specific case. The paper discusses frequently encountered questions regarding salt analysis in the context
of historical monuments preservation. The types of materials that are often tested for their salt content are
historical mortars, stones, repair mortars and materials used to extract salts from salt loaded original materials,
such as poultices. A definition of these different material types and their sub-groups is given from the
point of view of salt analysis, the questions asked regarding the different groups of materials are elaborated,
sampling strategies and analytical procedures are discussed and finally some hints towards the possible interpretations and their difficulties are given. Special emphasis is put on the water extraction method as this
seems to be the by the far most frequently used method for quantitative salt analysis.
In: Bauinstandsetzen und Baudenkmalpflege Vol. 11, No 6, 409–418 (2005)

Zitation:
Bläuer-Böhm, Christine:
Quantitative Salt Analysis in Conservation of Buildings. Aedificatio Verlag 2005
doi:10.5165/hawk-hhg/152