Cit:Stahlbuhk.etal:2017

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Author Stahlbuhk, Amelie; Niermann, Michael; Steiger, Michael
Year 2017
Title Determination of the water uptake and drying behavior of masonry using a non-destructive method
Bibtex @inproceedings {Stahlbuhk.etal:2017,

title = {Determination of the water uptake and drying behavior of masonry using a non-destructive method}, booktitle = {Proceedings of SWBSS 2017. Fourth International Conference on Salt Weathering of Buildings and Stone Sculptures, University of Applied Sciences Potsdam, Germany, 20-22 September 2017}, year = {2017}, editor = {Laue, Steffen}, pages = {57-64}, month = {september}, organization = {Fachhochschule Potsdam}, publisher = {Verlag der Fachhochschule Potsdam}, note = {fulltext, conference paper}, key = {SWBSS2017}, doi = {10.5165/hawk-hhg/321}, author = {Stahlbuhk, Amelie; Niermann, Michael; Steiger, Michael} }

DOI 10.5165/hawk-hhg/321
Link File:SWBSS 2017 Proceedings 57-64 Stahlbuhk Niermann Steiger.pdf
Notes in: Proceedings of SWBSS 2017 - Fourth International Conference on Salt Weathering of Buildings and Stone Sculptures. University of Applied Sciences, Potsdam, Germany, 20-22 September 2017



Bibliography

[Stahlbuhk.etal:2017]Stahlbuhk, Amelie; Niermann, Michael; Steiger, Michael (2017): Determination of the water uptake and drying behavior of masonry using a non-destructive method. In: Laue, Steffen (eds.): Proceedings of SWBSS 2017. Fourth International Conference on Salt Weathering of Buildings and Stone Sculptures, University of Applied Sciences Potsdam, Germany, 20-22 September 2017,Verlag der Fachhochschule Potsdam 57-64, 10.5165/hawk-hhg/321Link to Google ScholarFulltext link

Abstract

Historic masonry of different types often suffers from various enrichments in surface and near-surface areas. Salts, atmospheric pollutants and other materials from external sources are possible causes for these enrichments which can directly influence the water uptake and drying of the masonry. Thus, a compaction of the superficial porous network can be expected in the case of crust formation, an enhanced water uptake in the case of hygroscopic salts. Both of these lead to a change of the intrinsic and unaffected water balance. Besides damaging effects, possibly provoked by crusts, and elevated salt contents, it is of interest to investigate how affected walls behave at a given relative humidity, e. g. threshold values for enhanced water uptake or release influenced by salts. The present study reports on a non-destructive chamber method used to investigate the impact of encrustations and salts on the masonry’s behavior concerning drying by determining moisture flow. Advantages of the chamber are its easy and non-destructive application on the masonry using a sealing material that is solely pressed on the wall without leaving residues and the use of harmless water vapor. An investigation of wall paintings in the cloister of the St. Peter Cathedral in Schleswig which in parts suffer from massive yellowish encrustations is presented to demonstrate the promising results obtained with the chamber method.