How salts affect the vapour permeability of old walls? Key differences between the vapour permeability of salty and non-salty masonries

Moisture is one of the main decay factors affecting old buildings. The movement of moisture is often accompanied by the presence of watersoluble salts which can impact the masonry in several ways. Present paper explores the differences in vapour permeability between salty and non-salty masonries, how salts impact both the moisture retention and free evaporation of moisture. It has been found that electrically charged salt ions hinder the free evaporation of moisture, contributing to the retention of moisture inside the masonry.

Content

Author and article information

Conference

Publisher: ScienceOpen

Publication date (Electronic, pub): 27 June 2023

Affiliations

[1 ] University of Strathclyde, Glasgow, United Kingdom ( https://ror.org/00n3w3b69)

[2 ] Core Conservation Ltd, Edinburgh, United Kingdom;

Article

DOI: 10.14293/ICMB230002

SO-VID: 66e34c6f-19e0-4139-95e1-7f862ceafd8d

License:

Published under Creative Commons Attribution 4.0 International ( CC BY 4.0). Users are allowed to share (copy and redistribute the material in any medium or format) and adapt (remix, transform, and build upon the material for any purpose, even commercially), as long as the authors and the publisher are explicitly identified and properly acknowledged as the original source.

Conference name: 2nd International Conference on Moisture in Buildings 2023

Conference acronym: ICMB23

Conference date: 3-4 July 2023

History

Product

ScienceOpen

Keywords: salty masonry,effect of salts,vapour permeability,breathability,wetting