TY - JOUR
T1 - Moisture and salt transport in three-layer plaster/substrate systems
AU - Petkovic, J.
AU - Huinink, H.P.
AU - Pel, L.
AU - Kopinga, K.
AU - van Hees, R.P.J.
PY - 2010
Y1 - 2010
N2 - 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.
AB - 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.
U2 - 10.1016/j.conbuildmat.2009.08.014
DO - 10.1016/j.conbuildmat.2009.08.014
M3 - Article
SN - 0950-0618
VL - 24
SP - 118
EP - 127
JO - Construction and Building Materials
JF - Construction and Building Materials
IS - 1
ER -