sample50Vič · Central Slovenia Region

46.051629 14.458025

Collected by Anja Slapničar

Brickworks Rakek – Vič · Central Slovenia Region
Brickworks Rakek
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Vič

In 1908, a wealthy merchant with iron (his house was where Figovec is located today in Ljubljana) built a brickworks in Brdo. It was called Knezova opekarna (Knez brickworks). In 1909, Vidiceva opekarna (Vidic brickworks) was built. The owner was Anton Vidic, a building material merchant. He was from Carinthia. He had a shop in Carinthia, and when the shop burnt down, he moved to Ljubljana. At that time, his brickworks was one of the largest factories on our territory. In 1922, the brickworks was connected to the railway with the main railway line Ljubljana-Postojna.

Between the two brickworks, a third one was built. It was named Emona, later Opeka. It was built by the farmer Sitar from Vič. After eight years of operation, the Vidic and Emona-Opeka brickworks merged and it was renamed Združene opekarne d.d., which was operated by eleven shareholders. Emona's co-owner was also Ljubljanska posojilnica (Ljubljana loan bank) on the Miklošičeva street.

After the Second World War, the brickworks nationalization was carried out. In Ljubljana, the main construction material directorate of the SRS was established for entire Slovenia. In 1947, Ljubljanske opekarne (Ljubljana brickworks) was established, which brought together brickworks: Log, Vič, Brdo, Gameljne, Emona-Opeka, Draga, Bobovk pri Kranju, Radomlje, Vrhniške opekarne (Vrhnika brickworks) and Obrov.

Živa Slavec, Anja Slapničar

Sample 50 is clay from Vič (Central Slovenia Region). The recommended firing temperature is 900–1100 °C. The beginning of sintering is at 1100–1200 °C. At 1100 °C shrinkage is 6 % and porosity 6 %.

Clay samples

  1. Sample 50 – 800 °C800 °C
  2. Sample 50 – 900 °C900 °C
  3. Sample 50 – 1000 °C1000 °C
  4. Sample 50 – 1100 °C1100 °C
  5. Sample 50 – 1200 °C1200 °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
  • 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. 1.1 % = 1.0 mm1.1 % = 1.0 mm
  5. 0.5 % = 0.2 mm0.5 % = 0.2 mm
  6. 0.3 % = 0.05 mm0.3 % = 0.05 mm