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Author(s):	Pruckner, Franz
Title:
Abstract:	Eine Möglichkeit der Erfassung des Wassersättigungsgrads von Beton stellt die Messung der relativen Luftfeuchtigkeit eines mit dem Beton im Gleichgewicht stehenden Hohlraums dar. Die indirekte Natur dieser Methode erfordert die Kenntnis der thermodynamischen Zusammenhänge, um brauchbare Informationen zur Wassersättigung zu erhalten. Die Berechnung der Wassersättigung erfordert sowohl die Erfassung der Luftfeuchtigkeit als auch der Temperatur. In der vorliegenden Arbeit werden die Ergebnisse dieser Methode dargestellt. Interessant war die Beobachtung, dass die Wassersättigung von beschichteten Bauteilen konstant blieb, obwohl sich die gemessene Luftfeuchtigkeit im Hohlraum mit den täglichen und saisonalen Temperaturschwankungen änderte. Relative humidity measurements for assessing moisture conditions in concrete structures One way of detecting the water saturation degree of concrete represents the measurement of the relative humidity in a cavity in concrete which is in equilibrium with moisture content in concrete. The indirect nature of this method requires knowledge of the thermodynamic relationships in order to obtain useful information on water saturation. Calculating the water saturation degree of concrete requires both detection of the humidity and the temperature. In the present study, the results of this method are presented. It was interesting to observe that the saturation degree of coated concrete structures remained constant, even though the measured humidity in the cavity changed with the daily and seasonal temperature fluctuations.
Source:	Beton- und Stahlbetonbau 108 (2013), No. 12
Page/s:	865-874
Language of Publication:	German

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