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Title:	Effect of salts and absorption cycles in the capillary coefficient of building materials with different joints
Abstract:	Rising damp can reduce building's aesthetical value, comfort and health mark, when combined with the existence of soluble salts in the building components and in the ground water can even lead to material decomposition and compromise its structural performance. This research work intended to study the effect of different absorption cycles of two saturated solutions of sodium sulphate and potassium chloride in the capillary absorption curves obtained through the partial immersion of red brick samples without and with different joints. The results revealed significant differences in the capillary coefficients obtained when samples were tested with salt solutions. Wirkung von Salzen und Absorptionsprozessen auf den Kapillartransportkoeffizienten von Baustoffen mit verschiedenen Fugen. Aufsteigende Feuchte kann den ästhetischen Wert, den Komfort und die Gesundheitswirkung von Gebäuden negativ beeinflussen. Lösliche Salze in den Bauteilen und im Grundwasser können hierbei sogar Zersetzungsprozesse auslösen und die Standsicherheit beeinträchtigen. Diese Forschungsarbeit untersucht die Wirkung unterschiedlicher Absorptionszyklen von gesättigter Natriumsulfat- bzw. Kaliumchlorid-Lösung auf die kapillaren Absorptionskurven. Für den Versuch wurden Prüfkörper aus Backstein mit und ohne Fugen teilweise eingetaucht. Die Ergebnisse zeigten bei Salzlösungen signifikante Unterschiede der Kapillartransportkoeffizienten.
Source:	Bauphysik 38 (2016), No. 6
Page/s:	348-354
Language of Publication:	English

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