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Title of Journal: Eur J Wood Prod

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Abbravation: European Journal of Wood and Wood Products

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Springer-Verlag

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DOI

10.1016/1053-0770(93)90016-E

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ISSN

1436-736X

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Development of a new rapid method for mould testin

Authors: Sheikh Ali Ahmed Margot SehlstedtPersson Tom Morén
Publish Date: 2013/05/15
Volume: 71, Issue: 4, Pages: 451-461
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Abstract

The purpose of this study was to develop fast simple and robust solid wood mould testing methods for the use in smallscale laboratory tests The objective was to investigate mould susceptibility of different wood materials within the batches The proposed method is based on natural contamination of nonsterile surfaces in climates conducive to mould growth For this purpose a climate chamber with regulated temperature and relative humidity was used The conditioning chamber was divided into upper and lower chamber by a thin layer of stainless steel placed horizontally above the fan to minimise air circulation to the sample in the upper compartment Mouldinfected samples from outdoor tests were used as a source of mould inocula and test trials were conducted on Scots pine Pinus sylvestris L sapwood Samples were suspended from the top of the upper chamber and the chamber was exposed to different temperature and humidity levels Severe mould infestation was observed after 12–14 days of incubation Visual mould rating was then performed Regardless of some constraints this test method was very simple fast and effective More importantly unlike other test methods it closely models mould infestation as it would occur under natural conditionZweck dieser Studie war die Entwicklung eines schnellen einfachen und robusten Verfahrens zur Prüfung von Schimmelbefall auf Massivholz im Labor Ziel war es die Anfälligkeit von in der Prüfkammer unterschiedlich angeordneten Prüfkörpern für Schimmelbefall zu untersuchen Die vorgeschlagene Methode basiert auf natürlicher Kontamination nicht steriler Oberflächen in Klimata die Schimmelwachstum fördern Hierfür wurde eine Klimakammer mit regulierbarer Temperatur und relativer Luftfeuchte verwendet Die Klimakammer wurde mittels einer horizontal über dem Ventilator angebrachten dünnen Edelstahlplatte in einen oberen und einen unteren Teil abgeteilt um die Luftzirkulation im Bereich der Prüfkörper in der oberen Kammer zu minimieren Von Schimmel befallene Prüfkörper aus Freilandversuchen dienten als Infektionsquelle An Kiefernsplintholz Pinus sylvestris L wurden Testversuche durchgeführt Die Prüfkörper wurden an der Decke der oberen Kammer aufgehängt und in der Kammer wurden verschiedene Temperatur und Feuchteniveaus eingestellt Nach 1214 Tagen wurde starker Schimmelbefall festgestellt Anschließend wurde der Befall visuell bewertet Abgesehen von einigen Einschränkungen erwies sich diese Methode als sehr einfach schnell und effektiv Noch wichtiger war jedoch dass dieses Verfahren im Vergleich zu anderen Prüfverfahren Schimmelbefall am realistischsten modelliert


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Other Papers In This Journal:

  1. Industrial production of pine tannin-bonded particleboard and MDF
  2. Remedial boron treatment of difficult to access timber in buildings
  3. Cork as a building material: a review
  4. Fire performance and decay resistance of solid wood and plywood treated with quaternary ammonia compounds and common fire retardants
  5. Soy-substituted liquid phenol formaldehyde binders for flakeboard
  6. The potential of color measurements with the CIEDE2000 equation in wood science
  7. UV protection effects of phenolic extracts from chestnut fruit and forest industries residues
  8. The effect of acetylation on the Janka hardness of pine wood
  9. Full-field moisture induced deformation in Norway spruce: intra-ring variation of transverse swelling
  10. Wood–water relations of chestnut wood used for structural purposes
  11. Wood based bulk material in 3D printing processes for applications in construction
  12. Manufacture and properties of citric acid-bonded particleboard made from bamboo materials
  13. Resin and wax distribution and mobility during medium density fibreboard manufacture
  14. Resistance based moisture content measurements on native, modified and preservative treated wood
  15. Minimizing dust emission during routing operation of rubberwood
  16. Comparison of wood coating durability in natural weathering and artificial weathering using fluorescent UV-lamps and water
  17. Weathering indicator for artificial and natural weathering of wood coatings
  18. Effect of species and grinding disc distance on the surface roughness parameters of medium density fiberboard
  19. Load-bearing characteristics of heat-treated rubberwood furniture components and joints
  20. Effect of accelerated aging on selected physical and mechanical properties of Bambusa rigida bamboo

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