Product:
Kishajmás clay
Colour: red
Types:
vacuumed, hand
vacuumed, power-driven
vacuumed, fire-clay
Plasticity
(Pfefferkorn): 38 %
Avg granule: 11,5 mm
Raw-breaking rigidity: 8 N/mm2
Drying shrinkage: 7 %
Firing
temperature: 900-1060 °C
Firing shirnkage:
@ 900 °C 0,9 %
@ 1000 °C 0,9 %
@ 1040 °C 1,0 %
| Firing
temperature (°C) |
960
|
1020 |
1100 |
| Absorption
of water (%) |
23,3 |
23,3 |
18 |
| Vv
(g/cm3) |
1,64 |
1,63 |
1,78 |
| Burned
bending rigidity (N/mm2) |
19,0 |
22,3 |
31,9 |
Coefficient of thermal expansion (1100°C)
20
- 100 °C 41,95 x 10-7 m/(mK)
20 - 300 °C 65,12 x 10-7 m/(mK)
20 - 600 °C 82,48 x 10-7 m/(mK)
Oxide composition (%):
| SiO2 |
Al2O3 |
Fe2O3 |
TiO2 |
CaO
|
MgO |
K2O |
Na2O |
Izz.veszt. |
| 54,85 |
15,67 |
3,41 |
0,60 |
8,04 |
2,51 |
2,28 |
0,81 |
10,82 |
Pécs, 1998. november 13.
|
Pécs,
2004