Properties & Qualities
Application
Sample making
Qualities
Colourful, Rigid, Shiny, Smooth, Transparent
Colour
Blue, Grey, White
Sample Information
Date of creation
February 17, 2022
Dimensions
30 x 20 x 2 cm
Process & Production
Unlike ordinary concrete, the fireproof concrete stands temperatures up to appr. 1400°C. High temperatures allows us to sinter porcelain and melt glass. Please find the firing sequence below.
Recipe Details
Firing sequence for refractory concrete, combined with Bullseye glass, full melting 1220 degrees.
Porcelain clay slip as an insulating layer between the concrete and the glass.
1. 0 – 150°C – Time: 6 hrs – Hold: 6 hrs
2. 150 – 300 °C – Time: 6 hrs – Hold: 1 hour per 25 mm material thickness
3. 300 – 1220 °C – Time: 14 hrs – Hold: 0 hrs
4. 1220 – 540 °C – Time: 0 hrs – Hold: 4 hrs
5. 540 – 450 °C – Time: 2 hrs – Hold: 1 hrs
6. 450 -0 °C – Time:06 hrs – Hold: 0 hrs
Total firing time = approx. 43 hours + cooling phases (approx. 3 days)
Only open the kiln when it is below 100 degrees (due to tension in the glass).
Credits
Craft Maker
OsloMet - Oslo Metropolitan University – Department of Product Design
Photographer
OsloMet - Oslo Metropolitan University
