Print Email Facebook Twitter Moisture and salt transport in three-layer plaster/substrate systems Title Moisture and salt transport in three-layer plaster/substrate systems Author Petković, J. Huinink, H.P. Pel, L. Kopinga, K. van Hees, R.P.J. TNO Bouw en Ondergrond Publication year 2010 Abstract We have investigated whether a plaster which has two plaster layers with different pore sizes can act as a salt accumulating plaster system, in which salt crystallizes in the base layer of the plaster and not in the substrate or at the external surface. We used two substrates; fired-clay brick and Bentheim sandstone. On the substrate we applied two plaster layers, of which the first (base) plaster layer has pores that are significantly smaller than the pores of the second (external) plaster layer. These systems were either saturated with pure water or a NaCl solution. The moisture and salt transport during drying were investigated with a Nuclear Magnetic Resonance technique. In our experiments, only a system consisting of a coarse porous gypsum layer and a fine porous lime-cement layer on a Bentheim sandstone showed, under certain conditions, salt accumulation in the base layer. © 2009 Elsevier Ltd. All rights reserved. Subject Building Engineering & Civil EngineeringBM - Building MaterialsTS - Technical SciencesMaterialsBuilt EnvironmentLayered systemsNuclear magnetic resonancePlasterPorous materialsSalt transportBase layersBentheim sandstonesClay bricksDifferent pore sizesExternal surfacesGypsum layerLayered systemsNaCl solutionNuclear magnetic resonance techniquesPure waterSalt transportThree-layerClay mineralsGypsumMoistureNuclear magnetic resonanceNuclear magnetic resonance spectroscopyPorous materialsResonanceSandstoneSodium chlorideSubstratesPlaster To reference this document use: http://resolver.tudelft.nl/uuid:c68a05ad-c546-4a65-9119-89e73121d1f1 TNO identifier 279959 ISSN 0950-0618 Source Construction and Building Materials, 24 (1), 118-127 Document type article Files To receive the publication files, please send an e-mail request to TNO Library.