Effect of mixed-in crystallization inhibitor on resistance of lime-cement mortar against NaCI
article
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.
Topics
Crystallization inhibitorMortarSalt crystallizationSalt damageSodium chlorideCement mortarsCross sectionCrystallization inhibitorsNaCl crystallizationOn-resistancePilot studiesPorous building materialSalt crystallizationSalt crystalsSalt damageSalt resistanceScanning Electron MicroscopeSpecific crystal facesCementsChemical compoundsConstruction equipmentLimeMortarScanning electron microscopySodium chlorideCrystallization
TNO Identifier
403062
Source
Construction and Building Materials, 12(24), pp. 2466-2472.
Place of publication
Delft
Pages
2466-2472
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