SlovenščinaCatalogue of Slovene clays

sample67Vrhnika · Central Slovenia Region

45.970274 14.307795

Collected by Vesna Vidrih

Flooded Clay Pits in Brickworks Vrhnika – Vrhnika · Central Slovenia Region
Flooded Clay Pits in Brickworks Vrhnika
Photo from the web

Vrhnika

According to the legend, the town was supposed to have been founded by the Argonauts, who sailed across the Sava and the Ljubljanica rivers from the Black Sea under Jason’s leadership. When they reached the source of the Ljubljanica river in this area, they had to dismantle the ship and transfer it overland to the coast of the Adriatic Sea. Their ship is depicted in the municipality coat of arms.

Sample 67 is clay from Vrhnika (Central Slovenia Region). The recommended firing temperature is 900–1300 °C. At 1300 °C shrinkage is 6 % and porosity 0 %.

Clay samples

  1. Sample 67 – 800 °C800 °C
  2. Sample 67 – 900 °C900 °C
  3. Sample 67 – 1000 °C1000 °C
  4. Sample 67 – 1100 °C1100 °C
  5. Sample 67 – 1200 °C1200 °C
segrevanjeheating uppriporočena temp. žganjarecommended firing temperaturesžganje/firing °C%%002244668810101212141416161818202022222424suha glina/dry clay900 °C1000 °C1100 °C1200 °C1300 °C
  • segrevanje
    heating up
  • priporočena temp. žganja
    recommended firing temperatures
%04812162024suhadry9001000110012001300°C
poroznost/porosity %skrčki/shrinkage %

Clay preparation for testing

  1. unprocessed clayunprocessed clay
  2. sifted and dried claysifted and dried clay
  3. 012341.00.20.05%grain size in mm
  4. 2.7 % = 1.0 mm2.7 % = 1.0 mm
  5. 0.5 % = 0.2 mm0.5 % = 0.2 mm
  6. 0.3 % = 0.05 mm0.3 % = 0.05 mm