Salt transport and crystallization in plaster layers: A nuclear magnetic resonance study
conference paper
The durøbility and performance of specially developed restoralion plasters are not always as good as expecled. Salt
crystallization is one ofthe causes ofthe observed degradation processes. To understand this processes in more detail, we
investigated whelher transport in the plasters depends on the masonry material. The transport of salt and moisture during
drying of some plaster/substrate systems is followed with a Nuclear Magnetic Resonance technique. A different drying
behøvior is observed, which can be related to the dffirences in pore slructure of lhe plaster and substrales. For a good
performance of the plaster a proper matching of the pore-size distribulion of the plaster with that of the masonry is
required.
crystallization is one ofthe causes ofthe observed degradation processes. To understand this processes in more detail, we
investigated whelher transport in the plasters depends on the masonry material. The transport of salt and moisture during
drying of some plaster/substrate systems is followed with a Nuclear Magnetic Resonance technique. A different drying
behøvior is observed, which can be related to the dffirences in pore slructure of lhe plaster and substrales. For a good
performance of the plaster a proper matching of the pore-size distribulion of the plaster with that of the masonry is
required.
TNO Identifier
330821
Source title
6th International Symposium on the Conservation of Monuments in the Mediterranean Basin, Lisbon, Portugal, 7-10 April
Pages
318-322
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