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Abstract:	Der Schutz der Dämmstoffe von WDVS vor Umwelteinflüssen wird hauptsächlich durch das Putzssystem sichergestellt. Haftet dieses nicht mehr am Dämmstoff, so sind umfangreiche Sanierungsmaßnahmen erforderlich. Mit Hilfe von Haftzugprüfungen aus künstlich gealterten Proben sollten Prognosen über die Dauerhaftigkeit unter realen Bedingungen abgeleitet werden. Es wurde festgestellt, dass die Festigkeit von Platten mit hoher Anfangsfestigkeit über die Zeit um etwa 25 % geringer wird, dann jedoch auf dem Festigkeitsniveau verbleibt. Bei Platten mit niedriger Anfangsfestigkeit wurde kein relevanter Festigkeitsabfall ermittelt. Experimental analysis of the durability of external thermal insulation compound systems (ETICS) using wood fibre insulating boards. The insulation of external thermal insulation compound systems has to be protected by the rendering system. The failure of the rendering system, e.g. due to the loss of bonding strength to the insulation can lead to a failure of the hole system. Forecasts of the durability should be done by using test results of tensile bond strength from samples which were stressed by artificial weathering. Boards with a relatively high strength lose nearly 25 % of their strength and continue in a while at that level. Boards with a relatively low strength do not lose there strength any more.
Source:	Bauphysik 31 (2009), No. 4
Page/s:	199-203
Language of Publication:	German

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