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Study on effective modifiers for damaging salts in mortar

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Author: Granneman, S.J.C. · Ruiz-Agudo, E. · Lubelli, B.A. · Hees, R.P.J. van · Rodgriguez-Navarro
Type:article
Date:2014
Source:AMS '14 Proceedings of the International Conference on Ageing of Materials and Structures, Delft 26-28 May 2014, The Netherlands, 604-611
Identifier: 503125
Keywords: Architecture Materials · Salt crystallization damage · Ageing · Mortar · Crystallization modifiers · Buildings and Infrastructure · Built Environment · Building Engineering & Civil Engineering · SR - Structural Reliability · TS - Technical Sciences

Abstract

The use of crystallization modifiers for the prevention or mitigation of salt crystallization damage has recently received a lot of research interest in the field of building conservation. However, the use of crystallization modifiers mixed in a lime-based mortar, is still a very new field of research. This paper summarizes the literature study aimed at the identification of a possible modifier for sodium sulfate, one of the most damaging salts found in porous building materials. Furthermore, the results of preliminary experiments conducted in order to test the suitability of borax as a crystallization modifier for sodium sulfate are reported and discussed.