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Author(s):	Fischer, Henriette; Blaha, Alexander; Korjenic, Azra
Title:
Abstract:	Fassadenbegrünungen mittels Kletterpflanzen bieten die Möglichkeit auch im dicht verbauten Gebiet große Grünflächen kosteneffizient zu generieren. Häufig entstehen jedoch Bedenken, dass durch solche Begrünungen Schäden an Gebäuden entstehen können. Einer dieser Ängste ist der Eintrag von Feuchtigkeit aus dem angrenzenden Erdreich in die Außenwandkonstruktion von Bestandsgebäuden ohne ausreichender Feuchteabdichtung. Im Rahmen eines Forschungsprojekts an der TU Wien wurden an drei verschiedenen Außenwandkonstruktionen Temperatur- und Luftfeuchtigkeitsmessungen durchgeführt und jeweils eine begrünte mit einer nicht begrünten Fläche miteinander verglichen. Eine Verschlechterung der Feuchtesituation im Mauerwerk, welche auf die Begrünung zurückzuführen ist, wurde an keiner Außenwand festgestellt. Bauphysikalische Kenndaten für Kletterpflanzen konnten angenähert werden, was für weitere Simulationen von großer Bedeutung ist. Moisture penetration into exterior wall constructions of basement floors due to climbing plants: Façade greening with climbing plants offers the possibility to generate large green spaces cost-efficiently even in densely built-up areas. However, concerns often arise that such greenery can cause damage to buildings. One of these fears is the entry of moisture from the adjacent soil into the outer wall construction of existing buildings without sufficient moisture sealing. Within the scope of a research project at the Vienna University of Technology, temperature and humidity measurements were carried out on three different objects, comparing a greened and a non-greened outer wall construction. In addition to the measurements in the masonry, simulations were carried out. A deterioration of the moisture situation in the masonry, which can be attributed to the greening, was not detected on any external wall. Building physical characteristics for climbing plants could be approximated, which is of great importance for further simulations.
Source:	Bauphysik 42 (2020), No. 5
Page/s:	246-254
Language of Publication:	German

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