SlovenščinaCatalogue of Slovene clays

sample14Rakovnik · Lower Carniola

45.954841 15.107794

Collected by Mirjam Kotar

Chimney of the Former Brickworks in Rakovnik – Rakovnik · Lower Carniola
Chimney of the Former Brickworks in Rakovnik
Photo Vili Lamovšek

Sample 14 is clay from Rakovnik (Lower Carniola). The recommended firing temperature is 900–1050 °C. The beginning of sintering is at 1050–1200 °C. At 1100 °C shrinkage is 12 % and porosity 4 %.

Clay samples

  1. Sample 14 – 800 °C800 °C
  2. Sample 14 – 900 °C900 °C
  3. Sample 14 – 1000 °C1000 °C
  4. Sample 14 – 1100 °C1100 °C
  5. Sample 14 – 1200 °C1200 °C
  6. Sample 14 – 1300 °C1300 °C
segrevanjeheating uppriporočena temp. žganjarecommended firing temperatureszačetek sintranjathe beginning of sinteringmehčanjesofteningžganje/firing °C%%00224466881010121214141616181820202222suha glina/dry clay900 °C1000 °C1100 °C1200 °C1300 °C
  • segrevanje
    heating up
  • priporočena temp. žganja
    recommended firing temperatures
  • začetek sintranja
    the beginning of sintering
  • mehčanje
    softening
%048121620suhadry9001000110012001300°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. 2.1 % = 1.0 mm2.1 % = 1.0 mm
  5. 3.2 % = 0.2 mm3.2 % = 0.2 mm
  6. 0.2 % = 0.05 mm0.2 % = 0.05 mm