Santorini soil
Santorini earth is the common name for the pozzolans found on the Greek island of Santorini , a pyroclastic material created by volcanic activity that can be used as mortar and aggregate for cement .
About two thirds of Santorini earth consists of amorphous, i.e. non-crystallized silicon dioxide , which hydrates and hardens when water is added . The hardened cement is water-resistant, but loses its strength when dry. In the Adriatic area, Santorin soil was often used for hydraulic structures and bank protection.
See also
literature
- Eduard J. Ritter von Heider: The construction of the combined slip and dry dock in the new arsenal of the Austrian Lloyd in Trieste. A contribution about the use of the Santorini soil for hydraulic structures . Österreichischer Lloyd , Trieste 1856 ( available online from Google Books ).
Individual evidence
- ↑ K. Krenkler: Chemistry of the building industry: Volume 1: Inorganic chemistry. Springer Verlag, Berlin / Heidelberg / New York 1980, p. 135, table 66 indicates 65% SiO 2 .
- ↑ cf. also Friedrich Böckmann: Chemical-technical investigation methods of large-scale industry, the test stations and commercial laboratories. 3. Edition. Springer Verlag, Berlin / Heidelberg 1893, p. 680.
- ↑ Merck's Lexicon of Goods : Santorin Soil. (1920).
- ↑ Georg Feichtinger: About the Santorinerde. In: Polytechnisches Journal . 197, 1870, pp. 146-152.