Transport and crystallisation of salts in masonry and plasters
conference paper
For the understanding of the salt crystallisation mechanism in restoration plasters,
insight in the mechanism of moisture transport is essential, as well as in the influence
of salts on that mechanism. More specifically the drying behaviour, i.e. the moisture /
salt transport and distribution during drying, is important.
For a number of damage cases the salt and moisture distribution is analysed and, for
some of the cases, the development of the damage over time is shown. The same is
done for damage development in laboratory experiments. Recent experiments with
NMR make it possible to understand better the moisture transport and the drying of
porous materials. On the basis of the discussed examples, hypotheses are proposed
on factors determining the salt damage mechanism.
insight in the mechanism of moisture transport is essential, as well as in the influence
of salts on that mechanism. More specifically the drying behaviour, i.e. the moisture /
salt transport and distribution during drying, is important.
For a number of damage cases the salt and moisture distribution is analysed and, for
some of the cases, the development of the damage over time is shown. The same is
done for damage development in laboratory experiments. Recent experiments with
NMR make it possible to understand better the moisture transport and the drying of
porous materials. On the basis of the discussed examples, hypotheses are proposed
on factors determining the salt damage mechanism.
Topics
TNO Identifier
330813
Source title
13th International Brick and Block Masonry Conference (IB2MaC), Amsterdam, Netherlands, 4-7 July
Pages
1-9
Files
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