Travertiini

Pala travertiinia

Travertiini on yksi kalkkikiven (CaCO3) muoto ja eräs sedimenttikivilaji, jota käytetään rakennuskivenä. Kivityypin nimi juontaa latinan sanoista lapis tiburtinus. Nimi viittaa Tivolin kaupunkiin (antiikin Tibur), jossa on suuret travertiinilouhokset. Tunnettuja rakennuksia, jotka on tehty travertiinista ovat Colosseum, Pietarinkirkko ja Kazanin katedraali. Suomessa travertiinista on valmistettu Helsingin yliopiston Kaisa-talon kirjaston sisäänkäyntikerroksen lattia. Turussa rakennettavan Hotel Hamburger Börsin julkisivu tehdään travertiinista[1].

Travertiini on juuri louhittuna valkoista tai harmaata, mutta ajan kuluessa se saa tummemman, kullankeltaisen tai punertavan sävyn. Travertiini on huokoista, ja siitä louhitut rakennuskivet ovat pinnaltaan epätasaisia ja karkeita, mutta travertiinia voi myös kiillottaa tai sen syvennykset voi täyttää tasoiteaineella.

Lähteet

  1. ↑ Här rivs hotell Hamburger Börs i Åbo centrum svenska.yle.fi. 19.9.2019. Viitattu 23.9.2019. (ruotsi)

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