Experimentelle und numerische Untersuchungen des hygrothermischen Verhaltens von Brettsperrholz am Beispiel einer Außenwand

Publikation: Beitrag in Zeitung/MagazinArtikelForschungBegutachtung

Abstract

Experimental and numerical investigations of the hygrothermal behaviour of cross laminated timber using the example of an exterior wall – Within the scope of the project “massive_living” in Graz (AT), sensors were installed within an external wall section in a solid wood construction with cross laminated timber and observed over a period of more than two years. Due to the hygroscopic behaviour of wood, the moisture content of the wood adapts to the surrounding climate (equilibrium moisture content). The wood moisture content has a significant influence on all mechanical, physical and chemical properties of wood. Therefore, the knowledge of wood moisture content is of great importance for the realisation of wooden structures. According to öNORM EN 1995-1-1-1:2019 [1], load-bearing timber components are divided into service classes with regard to the surrounding air, which have a significant influence on the verification in the limit states of load-bearing capacity and serviceability. The question now arises as to which values the wood equilibrium moisture content of a building component can assume in the course of several years. The aim of this research project was to gain an understanding of the hygrothermal behaviour of a cross laminated timber wall (CLT wall) and then to compare the measurement data obtained with those from the simulations. The simulation results show a strong influence of the indoor conditions on the wood equilibrium moisture, whereby a good-natured behaviour with regard to moisture buffering can also be observed at high moisture loads. In addition, further measurements showed a dependence of the relative air humidity on the room height, which should be taken into account in hygrothermal calculations (as for example in the area near the ceiling).

Titel in ÜbersetzungExperimental and numerical investigations of the hygrothermal behaviour of cross laminated timber using the example of an exterior wall
Originalsprachedeutsch
Seiten252-268
Seitenumfang17
Band41
Nummer5
FachbuchBauphysik
DOIs
PublikationsstatusVeröffentlicht - 1 Okt 2019

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Timber
Wood
Moisture
Bearings (structural)
Ceilings
Bearing capacity
Air
Chemical properties
Loads (forces)
Atmospheric humidity
Physical properties
Mechanical properties
Sensors

Schlagwörter

  • Calculation methods
  • hygrothermal behaviour
  • in-situ measurement
  • Indoor climate
  • Moisture
  • ross laminated timber
  • transient simulations
  • wood equilibrium moisture content

ASJC Scopus subject areas

  • Environmental engineering
  • !!Architecture
  • !!Building and Construction

Dies zitieren

Experimentelle und numerische Untersuchungen des hygrothermischen Verhaltens von Brettsperrholz am Beispiel einer Außenwand. / Ganster, Konstantin; Ringhofer, Andreas; Schickhofer, Gerhard.

in: Bauphysik, Jahrgang 41, Nr. 5, 01.10.2019, S. 252-268.

Publikation: Beitrag in Zeitung/MagazinArtikelForschungBegutachtung

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