Cit:Aly-Mohamed.etal:2014

Autor	Abuku, M. and Ogura, D. and Hokoi, S. and Iba, C. and Wakiya, S. and Uno, T.
Jahr	2014
Titel	Measurement of sorption isotherm of porous materials influenced by salt
Bibtex
DOI	10.5165/hawk-hhg/242
Link	Datei:17 SWBSS-2014 Abuku etal.pdf
Bemerkungen	In: De Clercq, Hilde (editor): Proceedings of SWBSS 2014. Third International Conference on Salt Weathering of Buildings and Stone Sculptures Royal Institute for Cultural Heritage, Brussels, Belgium, 14-16 October 2015, S. 237-246

Eintrag in der Bibliographie

[Abuku.etal:2014]

Abuku, M.; Ogura, D.; Hokoi, S.; Iba, C.; Wakiya, S.; Uno, T. (2014): Measurement of sorption isotherm of porous materials influenced by salt. In: Hilde De Clercq (Hrsg.): Proceedings of SWBSS 2014 3rd International Conference on Salt Weathering of Buildings and Stone Sculptures,KIK-IRPA, Royal Institute for Cultural Heritage Brussels 237-246, https://doi.org/10.5165/hawk-hhg/242.

Keywords

moisture, water retention curve, absorption, desorption, salt crystal

Abstract

This paper compiles the past data of the sorption isotherm of Autoclaved Aerated Concrete (AAC) laden with salts (MgCl₂ and NaCl) and some new experimental data for AAC that contains Na₂SO₄. The results are related to the type of salt, the salt concentration and the mass of salt that is considered to be crystallised. Finally the existing mathematical model that uses the sorption isotherm for pure water and the salt content in the material is applied to predict the sorption isotherm of AAC laden with Na2SO4. It is shown that even salts like Na₂SO₄, whose equilibrium relative humidity is 94%, significantly alter the sorption isotherm when a large amount of salt is crystallised in the material and this to an extent depends on the amount as well as the type of salt.

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