Mitigating salt damage in building materials by the use of crystallization modifiers

a review and outlook

Review (2019)
Author(s)

Sanne Granneman (TU Delft - Heritage & Technology)

B. Lubelli (TU Delft - Heritage & Technology)

R. P.J. van Hees (TU Delft - Heritage & Technology, TNO)

Research Group
Heritage & Technology
DOI related publication
https://doi.org/10.1016/j.culher.2019.05.004
More Info
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Publication Year
2019
Language
English
Research Group
Heritage & Technology
Volume number
40
Pages (from-to)
183-194

Abstract

Salt crystallization damage in porous building materials is a widespread phenomenon. Several solutions to prevent, or mitigate, salt damage in building materials, prolonging thereby their service-life have been proposed. One of the latest approaches is the use of crystallization modifiers, aiming at reducing the crystallization pressure and/or favouring the crystallization of salts at the surface (efflorescence) instead of in the pores of the materials (crypto-florescence). This paper summarizes the working mechanisms of crystallization modifiers and critically reviews the available literature on their use in building materials; finally, it provides an outlook on the potentials of modifiers for the mitigation of salt crystallization damage in building materials.

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