The Dependence of Mold on the Relative Humidity in Different Types of Materials

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Abstract:

Building materials commonly used in Central Europe across the material base tend to have problems with the occurrence of mold. This is not only an aesthetic issue, but attacked material loses its properties as strength and durability and there is also a deteriorationening in other properties. This paper is focused on the susceptibility of wood and gypsum based materials to the development of mold at different humidity. There were also studied mold species occurred in samples naturally. Significantly increased the growth of mold on the surface was observed with samples placed into 98 % relative humidity than samples at 80 % relative humidity. Predominant mold was found on the surface of samples of solid wood. The most observed species was Trichoderma viride on wood based materials.

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98-102

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March 2017

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[1] J. Witzany, et al., Disorder, degradation, reconstruction, Czech Technical University in Prague, Prague, 2010. ISBN 978-80-01-04488-9.

Google Scholar

[2] H.A. Videla, L.K. Herrera, Biocorrosion. In: Vazquez-Duhalt R., Quintero-Ramírez R. (eds), Petroleum biotechnology, Developments and perspectives, Elsevier, Amsterdam, The Netherlands, (2004).

Google Scholar

[3] H.A. Videla, L.K. Herrera, Microbiologically influenced corrosion: Looking to the future. International Microbiology, 8(3) (2005) 169-180.

Google Scholar

[4] R. Wasserbauer, Biological Devaluation of Buildings, ABF Praha, 2000. ISBN 80-86165-30-2.

Google Scholar

[5] K.F. Nielsen, Mycotoxin production by indoor molds, Fungal Genet. Biol. 39 (2003) 103-117.

Google Scholar

[6] K.F. Nielsen, Mould growth on building materials. Secondary metabolites, mycotoxins and biomarkers, PhD Thesis, Biocentrum_DTU, Technical University of Denmark, (2002).

Google Scholar

[7] W.G. Sorensen, Fungal spores: hazardous to health, Environ. Health Perspect. 107 (1999) 469-472.

DOI: 10.1289/ehp.99107s3469

Google Scholar

[8] E. Vereecken et al., A comparison of different mould prediction models, Proceedings building Simulation, 12th Conference of International Building Performance Simulation Association, Sydney, 14-16 November (2011).

Google Scholar

[9] E. Vereecken et al., Review of mould predictiom models and their influence on mould risk evaluation, Building Enviroment 51 (2012) 296-310, doi: 10. 1016/j. buildenv. 2011. 11. 003.

DOI: 10.1016/j.buildenv.2011.11.003

Google Scholar

[10] R. A. Samson, J. Houbraken, U. Thrane, J. C. Frisvad, B. Andersen, Food and indoor fungi. CBS-KNAW Fungal Biodiversity Centre, C B S Laboratory Manual Series, no. 2, Utrecht, The Netherlands (2010).

Google Scholar