Computational Analysis Of Hygrothermal
Performance Of Renovation Renders
Author(s)
J. Kočí, V. Kočí, J. Maděra, P. Rovnaníková & R. Černý
Abstract
A combined computational-experimental approach for service life estimate of
surface layers of historical building made from renovation renders is presented in
the paper. The experimental part is aimed at estimation of the durability of two
commercial systems of double layered renovation renders in terms of their frost
resistance. The computational part includes calculation of number of freeze-thaw
cycles that may occur in surface layers during a reference year. To achieve this, a
diffusion-type model of coupled heat and moisture transport is used. The
computations are performed on historical load-bearing structure made of
sandstone, brick or arenaceous marl, finished by two different hydrophobic
renovation render systems.
Keywords: service life estimate, renovation renders, heat and moisture
transport, experimental analysis.
1 Introduction
In the current practice of reconstruction of surface layers of historical buildings it
is necessary to take into account some aspects, which are mostly controlled by
monument care authorities. In the first place the proper material must be chosen,
which is convenient according to authority’s rules. The second is preserving of
the original treatments and compound formulas. The choice of materials for
reconstruction is then more or less ruled by supervisory authorities, which
mostly choose such material that was suitable at an application on some other
building before. The durability of new surface layers made of renovation renders
Keywords
service life estimate, renovation renders, heat and moisture
transport, experimental analysis
Related Book
Other papers in this volume
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