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File:Rathaus-Hohenstein Kalktuff Schwaebische-Alb.jpg

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Deutsch: Das neue Rathaus von Hohenstein auf der Schwäbischen Alb wurde mit Platten aus Kalktuff beschichtet. Kalktuff ist ein Sedimentgestein, welches früher in Baden-Württemberg gerne als Baumaterial verwendet wurde. Im feuchten Zustand sind diese Bausteine mit Sägen und anderen Werkzeugen sehr leicht aus dem Kalktuffsediment zu gewinnen und zu bearbeiten. In ausgehärtetem Zustand ist Kalktuff hart, gut isolierend und außerordentlich witterungsbeständig. Bei der Sedimentierung als ausgefällter Kalk waren immer zahlreiche (an-)organische Materialien der Umgebung eingeschlossen. Solche “Verunreinigungen“ machen das Gestein sehr dekorativ und gleichzeitig porös und leicht.
An der Neuen Staatsgalerie Stuttgart wurde Cannstatter Travertin verwendet, ein Sedimentgestein des Neckars, welches ähnlich wie Kalktuff entstand.
English: Hohensteins new town hall is covered with plates of travertine, a karst product, sedimented in turbulent river sections and behind huge karst springs. When wet, travertine can easily be sawn. The dry material is extremely consolidated and weatherproof. The cavities and impurities - remnants of debris and biotic materials - make the plates very decorative and yet porous and thus lightweight.
Date July 2009; June 28th, 2014 (upload)
Source see author
Author Ustill

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current18:14, 27 June 2014Thumbnail for version as of 18:14, 27 June 20141,800 × 1,117 (2.14 MB)Ustill (talk | contribs)User created page with UploadWizard

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