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Author(s):	Popper, R.; Eberle, G.; Niemz, P.
Title:	Kinetik der freien, integralen Quellung von chemisch modifiziertem Holz entlang der Wasserdampf-Sorptionsisotherme unter luftfreien Bedingungen
Abstract:	Die kinetischen, dreidimensionalen Messungen der freien, integralen Quellung wurden an unbehandeltem und an acetyliertem (Acetylgehalt 8,56 %, 20,14 % und 28,63 %) Tannenholz (Abies alba Mill.) entlang der Sorptionsisotherme unter luftfreien Bedingungen durchgeführt. Der zeitliche Verlauf der Quellung in den drei anatomischen Hauptrichtungen und in der transversalen Richtung wurde für das unbehandelte und das acetylierte Holz aufgezeigt sowie der maximale Dimensionsstabilisierungseffekt (ASE) für die jeweilige Modifizierung geschätzt. Die Auswirkung des Partialdruckgradienten des Wasserdampfes auf die mittlere Quellungsgeschwindigkeit wurde behandelt. Kinetic of free integral swelling on chemically modified wood along the water vapour sorption isotherm under air-free conditions The kinetic, three-dimensional measurements of the free integral swelling were accomplished at the untreated and at the acetylated (acetyl content 8.56 %, 20.14 % and 28.63 %) fir wood (Abies alba Mill.) along the sorption isotherm under air-free conditions. The course of the swelling in the three anatomical main directions and in the transversal direction was presented for the untreated and the acetylated wood. The anti-swelling efficiency (ASE) for the accomplished modifications was estimated. The effect of the partial pressure gradient of the water vapour on the mean swelling speed was presented.
Source:	Bauphysik 32 (2010), No. 1
Page/s:	7-16
Language of Publication:	German

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