SlovenščinaCatalogue of Slovene clays

sample22Gradac-Grm · White Carniola

45.625545 15.268414

Collected by Martin Skoliber

Mine Kanižarica – Gradac-Grm · White Carniola
Mine Kanižarica
Photo Martin Skoliber

Sample 22 is clay from Gradac-Grm (White Carniola). The recommended firing temperature is 900–1000 °C. The beginning of sintering is at 1000–1300 °C. At 1000 °C shrinkage is 15 % and porosity 6 %.

Clay samples

  1. Sample 22 – 800 °C800 °C
  2. Sample 22 – 900 °C900 °C
  3. Sample 22 – 1000 °C1000 °C
  4. Sample 22 – 1100 °C1100 °C
  5. Sample 22 – 1200 °C1200 °C
  6. Sample 22 – 1300 °C1300 °C
segrevanjeheating uppriporočena temp. žganjarecommended firing temperatureszačetek sintranjathe beginning of sinteringžganje/firing °C%%0022446688101012121414161618182020222224242626282830303232suha glina/dry clay900 °C1000 °C1100 °C1200 °C1300 °C
  • segrevanje
    heating up
  • priporočena temp. žganja
    recommended firing temperatures
  • začetek sintranja
    the beginning of sintering
%048121620242832suhadry9001000110012001300°C
poroznost/porosity %skrčki/shrinkage %

Clay preparation for testing

  1. unprocessed clayunprocessed clay
  2. sifted and dried claysifted and dried clay
  3. 0123451.00.20.05%grain size in mm
  4. 4.5 % = 1.0 mm4.5 % = 1.0 mm
  5. 1.5 % = 0.2 mm1.5 % = 0.2 mm
  6. 0.3 % = 0.05 mm0.3 % = 0.05 mm