Title
Effect of mixed-in crystallization inhibitor on resistance of lime-cement mortar against NaCI
Author
Lubelli, B.A.
Nijland, T.G.
van Hees, R.P.J.
Hacquebord, A.
TNO Bouw en Ondergrond
Publication year
2010
Abstract
Salt crystallization is a common cause of damage to porous building materials. Recent research has shown that some chemical compounds may inhibit salt crystallization or alter the mode of crystallization, thus limiting salt damage development, provided that the inhibitor was introduced prior to salt crystallization. In this paper, a pilot study is presented in which sodium ferrocyanide, a crystallization inhibitor for sodium chloride, has been mixed in a lime-cement mortar. Salt resistance of the mortar has been tested by means of a crystallization test. The results of the crystallization test show that the addition of the inhibitor significantly improves the salt resistance of the mortar. Scanning electron microscope observations carried out on the surface of the cross section of the specimens demonstrate that the inhibitor modifies the habit of the salt crystals, as well inhibits the development of specific crystal faces. © 2010 Elsevier Ltd. All rights reserved.
Subject
Geosciences
Crystallization inhibitor
Mortar
Salt crystallization
Salt damage
Sodium chloride
Cement mortars
Cross section
Crystallization inhibitors
NaCl crystallization
On-resistance
Pilot studies
Porous building material
Salt crystallization
Salt crystals
Salt damage
Salt resistance
Scanning Electron Microscope
Specific crystal faces
Cements
Chemical compounds
Construction equipment
Lime
Mortar
Scanning electron microscopy
Sodium chloride
Crystallization
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DOI
https://doi.org/10.1016/j.conbuildmat.2010.06.010
TNO identifier
403062
Source
Construction and Building Materials, 12 (24), 2466-2472
Document type
article