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Author(s):	Worch, Anatol; Schild, Kai; Stein, Anna-Lena; Hannig, Antje
Title:	Parameterstudie zur Wasseraufnahme verschiedener Putz- und Beschichtungssysteme anhand von Simulationsrechnungen
Abstract:	Schlagregen führt zu einer Feuchtigkeitsbelastung von Außenwänden und kann insbesondere bei den zunehmend leichter werdenden Mauerwerksbildnern zu Schäden führen. Ein entsprechender Schutz wird in der Regel durch wasserabweisende Putzsysteme realisiert. Ziel der hier vorgestellten Simulationsrechnungen war es, die Wassergehalte im äußeren Bereich der Konstruktionen zu analysieren. Dabei wurde untersucht, ob der derzeit in der DIN 4108-3 verankerte Wasseraufnahmekoeffizient von 0,5 kg/(m2√h) ausreichend ist. Dies geschah auch vor dem Hintergrund unterschiedlicher Normungen bei den Prüfverfahren für die Wasseraufnahme (u.a. DIN EN ISO 15148, DIN EN 1015-18). Abschließend wurde betrachtet, welche Putz- und Anstrichsysteme günstig sind und welchen Einfluss unterschiedliche Wassergehalte auf den Wärmeschutz haben. Parametric study on the water absorption of different plaster and coating systems using simulations Driving rain results in damp on external walls and causes damage, particularly with increasingly light types of masonry. Appropriate protection is usually provided by water-repellent plaster systems. The aim of the simulations presented here was to analyse the water content in the outer part of the structures. This examined whether the water absorption coefficient of 0.5 kg/(m2√h) currently specified in DIN 4108-3 is adequate. It also took account of varying standards for the test procedure for water absorption (incl. DIN EN ISO 15148 and DIN EN 1015-18). Following this, observations were made on which plaster and coating systems are effective and what influence different water content levels have on thermal protection.
Source:	Bauphysik 40 (2018), No. 1
Page/s:	41-47
Language of Publication:	German

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