SlovenščinaCatalogue of Slovene clays

sample26Besnica Jošt · Upper Carniola

46.239583 14.291611

Collected by Živa Slavec

Earthworks in the Forest – Besnica Jošt · Upper Carniola
Earthworks in the Forest
Photo Živa Slavec

Besnica Jošt

At the north-east slope of Jošt in the Besnica Valley, a new source of water was discovered during the forest maintenance, and then a water reservoir was built. During the work, a layer of red clay, accompanied probably by flysch and slate layers, was exposed.

Regarding the flysch, there is a successive change of layers of various sedimentary rocks, such as: marl, claystone, mudstone, limestone.

Živa Slavec

Sample 26 is clay from Besnica Jošt (Upper Carniola). The recommended firing temperature is 900–1050 °C. The beginning of sintering is at 1050–1300 °C. At 1100 °C shrinkage is 9 % and porosity 1 %.

Clay samples

  1. Sample 26 – 800 °C800 °C
  2. Sample 26 – 900 °C900 °C
  3. Sample 26 – 1000 °C1000 °C
  4. Sample 26 – 1100 °C1100 °C
  5. Sample 26 – 1200 °C1200 °C
  6. Sample 26 – 1300 °C1300 °C
segrevanjeheating uppriporočena temp. žganjarecommended firing temperatureszačetek sintranjathe beginning of sinteringžganje/firing °C%%002244668810101212141416161818202022222424suha glina/dry clay900 °C1000 °C1100 °C1200 °C1300 °C
  • segrevanje
    heating up
  • priporočena temp. žganja
    recommended firing temperatures
  • začetek sintranja
    the beginning of sintering
%04812162024suhadry9001000110012001300°C
poroznost/porosity %skrčki/shrinkage %

Clay preparation for testing

  1. unprocessed clayunprocessed clay
  2. sifted and dried claysifted and dried clay
  3. 012341.00.2%grain size in mm
  4. 2 % = 1.0 mm2 % = 1.0 mm
  5. 0.6 % = 0.2 mm0.6 % = 0.2 mm