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05.06.2013 15:02:39


Betonkorrosion? Nur zu! In diesem Forum kann man über die unschönen Auswirkungen der Kohlensäure reden. Die Betonschäden in den Nachklärbecken, den Nitribecken oder seit neuesten im Sandfilter.


28.10.2008 01:45:44
Kann mir jemand eine Seite empfehlen, wo ich Informationen über Betonkorrosion downloaden kann?
29.10.2008 03:34:28
Seit einiger Zeit beobachte ich, daß die Betonoberfläche in meinem Nachklärbecken unter der Wasseroberfläche wie Waschbeton aussieht. Was kann ich dagegen tun ? Kann ich etwas zur Kontrolle messen?
29.10.2008 10:16:11
Das sieht nach CO2-Korrosion aus. Es besteht die Möglichkeit die Calcitsättigung zu messen. Ist der Wert positiv ist das Wasser kalkagressiv. Bestimme pH-Wert, Themperatur, Säurekapzität, Ca-Konzentration und Mg-Konzentration. Auf der Internetseite http://www.calcit.info gibt es die Möglichkeit die Werte einzutragen und die CO2-Konzentration, den Kb-Wert (Basenkapazität) und das Calcitlösevermögen zu bestimmen. Die anderen Werte die man eintragen kann haben zwar auch einen Einfluß, sind aber für die Genauigkeit nur im Trinkwasser wichtig, wo das Calcitlösevermögen nur zwischen +5mg/l und -5mg/l liegen sollte. Bei Kläranlagen werden schon 100 - 500 mg/l gemessen, da die kalkagressivität bisher nicht beachtet wird.
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27.05.2013 03:11:23
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05.06.2013 15:02:39


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