Hygrothermal Performance Of Innovative
Renovation Renders Used For Different Types Of
Historical Masonry
Author(s)
J. Kočí, J. Maděra, P. Rovnaníková & R. Černý
Abstract
A combined experimental-computational approach is applied for the estimation
of service life of innovative renovation renders. In the experimental part, the
durability of two commercial renovation renders is determined in terms of their
frost resistance, together with two newly developed renovation plasters that are
supposed to be produced commercially in the near future. The computational
part is aimed at the investigation of freeze-thaw cycles that may occur in surface
layers of the plaster during its life time period. To achieve this, a diffusion type
model of coupled heat and moisture transport is used. As a load-bearing structure
several materials which are characteristic for historical buildings are chosen,
namely ceramic brick, sandstone and arenaceous marl.
Keywords: service life estimate, renovation renders, heat and moisture
transport, experimental analysis, frost resistance.
1 Introduction
In the current practice of historical buildings renovation, the service life of new
surface layers is estimated mostly on the basis of experience, because too few
parameters are known for reliable durability estimate. Usually the durability is
given by the producer of the renovation render, which provides a warranty period
only in the case that the technological process is followed precisely. The service
Keywords
service life estimate, renovation renders, heat and moisture
transport, experimental analysis, frost resistance
Related Book
Other papers in this volume
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