Publikation:
Resilience of biocide-free ETICS to microbiological growth in an accelerated weathering test

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dc.contributor.authorKrueger, Nicole
dc.contributor.authorHofbauer, Wolfgang
dc.contributor.authorIlvonen, Outi
dc.contributor.authorThiel, André
dc.date.accessioned2024-06-16T12:37:28Z
dc.date.available2024-06-16T12:37:28Z
dc.date.issued2023
dc.description.abstractBiocide-free renders and coatings for external thermal insulation composite systems (ETICS) are now long-established on the market and contribute notably to the improvement of ETICS' environmental properties. A low likelihood of microbiological growth is a relevant criterion when choosing ETICS. We examined whether a previously developed accelerated weathering test would be able to determine the ETICS' resilience to microorganisms and be suitable as a standard instrument to check the fitness for use of biocide-free ETICS renders and coatings. 15 different combinations of renders and façade coatings, including both new and established products, were tested for 15 weeks under accelerated weathering. The used lifelike weather conditions derived from climate data on an average autumn day in Holzkirchen, Bavaria are favourable for microbiological growth. Specimens were inoculated with a spore suspension containing fungi and algae typical for buildings derived from the institutes' own collection of building-relevant organisms. The results clearly show that biocide-free ETICS' coatings can be highly resistant to microbiological growth. Of the tested product variants, only two showed low or medium resilience. Additionally, we measured the formation of surface water condensation. Knowledge of the amount of condensation water accumulated during dew point shortfall usually confirms the results of the accelerated weathering test. However, contradictory results also exist. This can be explained by different evaporation times of condensation water on the surface of renders. The evaporation times depend on the render's inherent properties. Our results confirm that the used accelerated weathering setup is a suitable standard instrument to assess and compare the resilience of biocide free ETICS to microbial infestation. © 2023 Elsevier Ltd. All rights reserved.en
dc.format.extent1 Online-Resource (11 pages)
dc.format.mediumonline resource
dc.identifier.doihttps://doi.org/10.60810/openumwelt-1260
dc.identifier.urihttps://openumwelt.de/handle/123456789/1503
dc.language.isoeng
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/
dc.subjectGebäudefassade
dc.subjectBiotest
dc.titleResilience of biocide-free ETICS to microbiological growth in an accelerated weathering test
dc.typeWissenschaftlicher Artikel
dc.type.dcmitext
dc.type.mediumcomputer
dspace.entity.typePublication
local.bibliographicCitation.journalTitleBuilding and Environment
local.bibliographicCitation.originalDOI10.1016/j.buildenv.2023.110737
local.bibliographicCitation.volume244 (2023) vom 1.10.2023
local.collectionAufsätze
local.contributor.authorId02171819
local.contributor.authorId02171821
local.contributor.authorId02193273
local.identifier.catalogId02502122
local.ingest.leader05738naa a2200000uu 4500
local.jointTitleRESILIENCE OF BIOCIDEFREE ETICS TO MICROBIOLOGICAL GROWTH IN AN ACCELERATED WEATHERING TEST
local.reviewtrue
local.sourcecatalog
local.staffPublicationtrue
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relation.isAuthorOfPublication.latestForDiscovery4f350078-2959-4feb-b8c3-289ceef61b94
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